diff --git a/output/openapi/elasticsearch-serverless-openapi.json b/output/openapi/elasticsearch-serverless-openapi.json
index af4883f41e..a747c8b7c5 100644
--- a/output/openapi/elasticsearch-serverless-openapi.json
+++ b/output/openapi/elasticsearch-serverless-openapi.json
@@ -23334,6 +23334,245 @@
         ]
       }
     },
+    "/_project_routing/{name}": {
+      "get": {
+        "tags": [
+          "project-routing"
+        ],
+        "summary": "Get named project routing expressions",
+        "description": "Get named project routing expressions.\n\n## Required authorization\n\n* Cluster privileges: `monitor`\n",
+        "operationId": "project-routing-get",
+        "parameters": [
+          {
+            "in": "path",
+            "name": "name",
+            "description": "The name of project routing expression",
+            "required": true,
+            "deprecated": false,
+            "schema": {
+              "type": "string"
+            },
+            "style": "simple"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/project_routing._types.ProjectRoutingExpression"
+                },
+                "examples": {
+                  "GetProjectResponseExample1": {
+                    "summary": "A single expressions",
+                    "value": "{\n  \"expression\" : \"_csp:aws AND _region:us*\"\n}"
+                  }
+                }
+              }
+            }
+          }
+        },
+        "x-state": "Technical preview",
+        "x-metaTags": [
+          {
+            "content": "Elasticsearch",
+            "name": "product_name"
+          }
+        ]
+      },
+      "put": {
+        "tags": [
+          "project-routing"
+        ],
+        "summary": "Create of update a single named project routing expression",
+        "description": "Create of update a single named project routing expression.\n\n## Required authorization\n\n* Cluster privileges: `manage`\n",
+        "operationId": "project-routing-create",
+        "parameters": [
+          {
+            "in": "path",
+            "name": "name",
+            "description": "The name of project routing expression",
+            "required": true,
+            "deprecated": false,
+            "schema": {
+              "type": "string"
+            },
+            "style": "simple"
+          }
+        ],
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/project_routing._types.ProjectRoutingExpression"
+              },
+              "examples": {
+                "CreateProjectRoutingRequestExample1": {
+                  "summary": "A single expression",
+                  "value": "{\n  \"expression\" : \"_csp:aws AND _region:us*\"\n}"
+                }
+              }
+            }
+          },
+          "required": true
+        },
+        "responses": {
+          "200": {
+            "description": "",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/_types.AcknowledgedResponseBase"
+                },
+                "examples": {
+                  "CreateProjectResponseExample1": {
+                    "summary": "A single expressions",
+                    "value": "{\n  \"acknowledged\": true\n}"
+                  }
+                }
+              }
+            }
+          }
+        },
+        "x-state": "Technical preview",
+        "x-metaTags": [
+          {
+            "content": "Elasticsearch",
+            "name": "product_name"
+          }
+        ]
+      },
+      "delete": {
+        "tags": [
+          "project-routing"
+        ],
+        "summary": "Delete named project routing expressions",
+        "description": "Delete named project routing expressions.\n\n## Required authorization\n\n* Cluster privileges: `manage`\n",
+        "operationId": "project-routing-delete",
+        "parameters": [
+          {
+            "in": "path",
+            "name": "name",
+            "description": "The name of project routing expression",
+            "required": true,
+            "deprecated": false,
+            "schema": {
+              "type": "string"
+            },
+            "style": "simple"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/_types.AcknowledgedResponseBase"
+                },
+                "examples": {
+                  "DeleteProjectResponseExample1": {
+                    "value": "{\n  \"acknowledged\": true\n}"
+                  }
+                }
+              }
+            }
+          }
+        },
+        "x-state": "Technical preview",
+        "x-metaTags": [
+          {
+            "content": "Elasticsearch",
+            "name": "product_name"
+          }
+        ]
+      }
+    },
+    "/_project_routing": {
+      "get": {
+        "tags": [
+          "project-routing"
+        ],
+        "summary": "Get named project routing expressions",
+        "description": "Get named project routing expressions.\n\n## Required authorization\n\n* Cluster privileges: `monitor`\n",
+        "operationId": "project-routing-get-many",
+        "responses": {
+          "200": {
+            "description": "",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/project_routing._types.NamedProjectRoutingExpressions"
+                },
+                "examples": {
+                  "GetProjectResponseExample1": {
+                    "summary": "Multiple expressions",
+                    "value": "{\n \"aws-us-only\": { \"expression\": \"_csp:aws AND _region:us*\" },\n \"aws-eu-only\": { \"expression\": \"_csp:aws AND _region:eu*\" }\n}"
+                  }
+                }
+              }
+            }
+          }
+        },
+        "x-state": "Technical preview",
+        "x-metaTags": [
+          {
+            "content": "Elasticsearch",
+            "name": "product_name"
+          }
+        ]
+      },
+      "put": {
+        "tags": [
+          "project-routing"
+        ],
+        "summary": "Create of update named project routing expressions",
+        "description": "Create or update named project routing expressions.\n\n## Required authorization\n\n* Cluster privileges: `manage`\n",
+        "operationId": "project-routing-create-many",
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/project_routing._types.NamedProjectRoutingExpressions"
+              },
+              "examples": {
+                "CreateProjectRoutingRequestExample1": {
+                  "summary": "Multiple expressions",
+                  "value": "{\n \"aws-us-only\": { \"expression\": \"_csp:aws AND _region:us*\" },\n \"aws-eu-only\": { \"expression\": \"_csp:aws AND _region:eu*\" }\n}"
+                }
+              }
+            }
+          },
+          "required": true
+        },
+        "responses": {
+          "200": {
+            "description": "",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/_types.AcknowledgedResponseBase"
+                },
+                "examples": {
+                  "CreateProjectResponseExample1": {
+                    "summary": "Multiple expressions",
+                    "value": "{\n  \"acknowledged\": true\n}"
+                  }
+                }
+              }
+            }
+          }
+        },
+        "x-state": "Technical preview",
+        "x-metaTags": [
+          {
+            "content": "Elasticsearch",
+            "name": "product_name"
+          }
+        ]
+      }
+    },
     "/_scripts/{id}/{context}": {
       "put": {
         "tags": [
@@ -79632,6 +79871,30 @@
           "_organisation"
         ]
       },
+      "project_routing._types.ProjectRoutingExpression": {
+        "type": "object",
+        "properties": {
+          "expression": {
+            "allOf": [
+              {
+                "$ref": "#/components/schemas/project_routing._types.RoutingExpression"
+              }
+            ]
+          }
+        },
+        "required": [
+          "expression"
+        ]
+      },
+      "project_routing._types.RoutingExpression": {
+        "type": "string"
+      },
+      "project_routing._types.NamedProjectRoutingExpressions": {
+        "type": "object",
+        "additionalProperties": {
+          "$ref": "#/components/schemas/project_routing._types.ProjectRoutingExpression"
+        }
+      },
       "query_rules._types.QueryRule": {
         "type": "object",
         "properties": {
diff --git a/output/schema/schema.json b/output/schema/schema.json
index c3864ed57d..2f7ac4d87d 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -17107,6 +17107,196 @@
         }
       ]
     },
+    {
+      "availability": {
+        "serverless": {
+          "stability": "experimental",
+          "visibility": "public"
+        }
+      },
+      "description": "Create of update a single named project routing expression.\n\nCreate of update a single named project routing expression.",
+      "docId": "project-routing",
+      "docTag": "project-routing",
+      "docUrl": "",
+      "name": "project_routing.create",
+      "privileges": {
+        "cluster": [
+          "manage"
+        ]
+      },
+      "request": {
+        "name": "Request",
+        "namespace": "project_routing.create"
+      },
+      "requestBodyRequired": true,
+      "response": {
+        "name": "Response",
+        "namespace": "project_routing.create"
+      },
+      "responseMediaType": [
+        "application/json"
+      ],
+      "urls": [
+        {
+          "methods": [
+            "PUT"
+          ],
+          "path": "/_project_routing/{name}"
+        }
+      ]
+    },
+    {
+      "availability": {
+        "serverless": {
+          "stability": "experimental",
+          "visibility": "public"
+        }
+      },
+      "description": "Create of update named project routing expressions.\n\nCreate or update named project routing expressions.",
+      "docId": "project-routing",
+      "docTag": "project-routing",
+      "docUrl": "",
+      "name": "project_routing.create_many",
+      "privileges": {
+        "cluster": [
+          "manage"
+        ]
+      },
+      "request": {
+        "name": "Request",
+        "namespace": "project_routing.create_many"
+      },
+      "requestBodyRequired": true,
+      "response": {
+        "name": "Response",
+        "namespace": "project_routing.create_many"
+      },
+      "responseMediaType": [
+        "application/json"
+      ],
+      "urls": [
+        {
+          "methods": [
+            "PUT"
+          ],
+          "path": "/_project_routing"
+        }
+      ]
+    },
+    {
+      "availability": {
+        "serverless": {
+          "stability": "experimental",
+          "visibility": "public"
+        }
+      },
+      "description": "Delete named project routing expressions.\n\nDelete named project routing expressions.",
+      "docId": "project-routing",
+      "docTag": "project-routing",
+      "docUrl": "",
+      "name": "project_routing.delete",
+      "privileges": {
+        "cluster": [
+          "manage"
+        ]
+      },
+      "request": {
+        "name": "Request",
+        "namespace": "project_routing.delete"
+      },
+      "requestBodyRequired": false,
+      "response": {
+        "name": "Response",
+        "namespace": "project_routing.delete"
+      },
+      "responseMediaType": [
+        "application/json"
+      ],
+      "urls": [
+        {
+          "methods": [
+            "DELETE"
+          ],
+          "path": "/_project_routing/{name}"
+        }
+      ]
+    },
+    {
+      "availability": {
+        "serverless": {
+          "stability": "experimental",
+          "visibility": "public"
+        }
+      },
+      "description": "Get named project routing expressions.\n\nGet named project routing expressions.",
+      "docId": "project-routing",
+      "docTag": "project-routing",
+      "docUrl": "",
+      "name": "project_routing.get",
+      "privileges": {
+        "cluster": [
+          "monitor"
+        ]
+      },
+      "request": {
+        "name": "Request",
+        "namespace": "project_routing.get"
+      },
+      "requestBodyRequired": false,
+      "response": {
+        "name": "Response",
+        "namespace": "project_routing.get"
+      },
+      "responseMediaType": [
+        "application/json"
+      ],
+      "urls": [
+        {
+          "methods": [
+            "GET"
+          ],
+          "path": "/_project_routing/{name}"
+        }
+      ]
+    },
+    {
+      "availability": {
+        "serverless": {
+          "stability": "experimental",
+          "visibility": "public"
+        }
+      },
+      "description": "Get named project routing expressions.\n\nGet named project routing expressions.",
+      "docId": "project-routing",
+      "docTag": "project-routing",
+      "docUrl": "",
+      "name": "project_routing.get_many",
+      "privileges": {
+        "cluster": [
+          "monitor"
+        ]
+      },
+      "request": {
+        "name": "Request",
+        "namespace": "project_routing.get_many"
+      },
+      "requestBodyRequired": false,
+      "response": {
+        "name": "Response",
+        "namespace": "project_routing.get_many"
+      },
+      "responseMediaType": [
+        "application/json"
+      ],
+      "urls": [
+        {
+          "methods": [
+            "GET"
+          ],
+          "path": "/_project_routing"
+        }
+      ]
+    },
     {
       "availability": {
         "serverless": {
@@ -236812,6 +237002,393 @@
       ],
       "specLocation": "project/tags/TagsResponse.ts#L23-L31"
     },
+    {
+      "kind": "type_alias",
+      "name": {
+        "name": "NamedProjectRoutingExpressions",
+        "namespace": "project_routing._types"
+      },
+      "specLocation": "project_routing/_types/RoutingExpression.ts#L28-L28",
+      "type": {
+        "kind": "dictionary_of",
+        "key": {
+          "kind": "instance_of",
+          "type": {
+            "name": "string",
+            "namespace": "_builtins"
+          }
+        },
+        "singleKey": false,
+        "value": {
+          "kind": "instance_of",
+          "type": {
+            "name": "ProjectRoutingExpression",
+            "namespace": "project_routing._types"
+          }
+        }
+      }
+    },
+    {
+      "kind": "interface",
+      "name": {
+        "name": "ProjectRoutingExpression",
+        "namespace": "project_routing._types"
+      },
+      "properties": [
+        {
+          "name": "expression",
+          "required": true,
+          "type": {
+            "kind": "instance_of",
+            "type": {
+              "name": "RoutingExpression",
+              "namespace": "project_routing._types"
+            }
+          }
+        }
+      ],
+      "specLocation": "project_routing/_types/RoutingExpression.ts#L24-L26"
+    },
+    {
+      "kind": "type_alias",
+      "name": {
+        "name": "RoutingExpression",
+        "namespace": "project_routing._types"
+      },
+      "specLocation": "project_routing/_types/RoutingExpression.ts#L22-L22",
+      "type": {
+        "kind": "instance_of",
+        "type": {
+          "name": "string",
+          "namespace": "_builtins"
+        }
+      }
+    },
+    {
+      "kind": "request",
+      "attachedBehaviors": [
+        "CommonQueryParameters"
+      ],
+      "body": {
+        "kind": "value",
+        "codegenName": "expressions",
+        "value": {
+          "kind": "instance_of",
+          "type": {
+            "name": "ProjectRoutingExpression",
+            "namespace": "project_routing._types"
+          }
+        }
+      },
+      "description": "Create of update a single named project routing expression.\n\nCreate of update a single named project routing expression.",
+      "examples": {
+        "CreateProjectRoutingRequestExample1": {
+          "method_request": "PUT /_project_routing/aws-us-only",
+          "summary": "A single expression",
+          "value": "{\n  \"expression\" : \"_csp:aws AND _region:us*\"\n}"
+        }
+      },
+      "inherits": {
+        "type": {
+          "name": "RequestBase",
+          "namespace": "_types"
+        }
+      },
+      "name": {
+        "name": "Request",
+        "namespace": "project_routing.create"
+      },
+      "path": [
+        {
+          "description": "The name of project routing expression",
+          "name": "name",
+          "required": true,
+          "type": {
+            "kind": "instance_of",
+            "type": {
+              "name": "string",
+              "namespace": "_builtins"
+            }
+          }
+        }
+      ],
+      "query": [],
+      "specLocation": "project_routing/create/CreateRoutingRequest.ts#L24-L52"
+    },
+    {
+      "kind": "response",
+      "body": {
+        "kind": "value",
+        "codegenName": "result",
+        "value": {
+          "kind": "instance_of",
+          "type": {
+            "name": "AcknowledgedResponseBase",
+            "namespace": "_types"
+          }
+        }
+      },
+      "examples": {
+        "CreateProjectResponseExample1": {
+          "summary": "A single expressions",
+          "value": "{\n  \"acknowledged\": true\n}"
+        }
+      },
+      "name": {
+        "name": "Response",
+        "namespace": "project_routing.create"
+      },
+      "specLocation": "project_routing/create/CreateRoutingResponse.ts#L22-L25"
+    },
+    {
+      "kind": "request",
+      "attachedBehaviors": [
+        "CommonQueryParameters"
+      ],
+      "body": {
+        "kind": "value",
+        "codegenName": "expressions",
+        "value": {
+          "kind": "instance_of",
+          "type": {
+            "name": "NamedProjectRoutingExpressions",
+            "namespace": "project_routing._types"
+          }
+        }
+      },
+      "description": "Create of update named project routing expressions.\n\nCreate or update named project routing expressions.",
+      "examples": {
+        "CreateProjectRoutingRequestExample1": {
+          "method_request": "PUT /_project_routing/",
+          "summary": "Multiple expressions",
+          "value": "{\n \"aws-us-only\": { \"expression\": \"_csp:aws AND _region:us*\" },\n \"aws-eu-only\": { \"expression\": \"_csp:aws AND _region:eu*\" }\n}"
+        }
+      },
+      "inherits": {
+        "type": {
+          "name": "RequestBase",
+          "namespace": "_types"
+        }
+      },
+      "name": {
+        "name": "Request",
+        "namespace": "project_routing.create_many"
+      },
+      "path": [],
+      "query": [],
+      "specLocation": "project_routing/create_many/CreateRoutingRequest.ts#L24-L46"
+    },
+    {
+      "kind": "response",
+      "body": {
+        "kind": "value",
+        "codegenName": "result",
+        "value": {
+          "kind": "instance_of",
+          "type": {
+            "name": "AcknowledgedResponseBase",
+            "namespace": "_types"
+          }
+        }
+      },
+      "examples": {
+        "CreateProjectResponseExample1": {
+          "summary": "Multiple expressions",
+          "value": "{\n  \"acknowledged\": true\n}"
+        }
+      },
+      "name": {
+        "name": "Response",
+        "namespace": "project_routing.create_many"
+      },
+      "specLocation": "project_routing/create_many/CreateRoutingResponse.ts#L22-L25"
+    },
+    {
+      "kind": "request",
+      "attachedBehaviors": [
+        "CommonQueryParameters"
+      ],
+      "body": {
+        "kind": "no_body"
+      },
+      "description": "Delete named project routing expressions.\n\nDelete named project routing expressions.",
+      "examples": {
+        "DeleteProjectRoutingRequestExample1": {
+          "method_request": "DELETE _project_routing/aws-us-only"
+        }
+      },
+      "inherits": {
+        "type": {
+          "name": "RequestBase",
+          "namespace": "_types"
+        }
+      },
+      "name": {
+        "name": "Request",
+        "namespace": "project_routing.delete"
+      },
+      "path": [
+        {
+          "description": "The name of project routing expression",
+          "name": "name",
+          "required": true,
+          "type": {
+            "kind": "instance_of",
+            "type": {
+              "name": "string",
+              "namespace": "_builtins"
+            }
+          }
+        }
+      ],
+      "query": [],
+      "specLocation": "project_routing/delete/DeleteRoutingRequest.ts#L23-L47"
+    },
+    {
+      "kind": "response",
+      "body": {
+        "kind": "value",
+        "codegenName": "result",
+        "value": {
+          "kind": "instance_of",
+          "type": {
+            "name": "AcknowledgedResponseBase",
+            "namespace": "_types"
+          }
+        }
+      },
+      "examples": {
+        "DeleteProjectResponseExample1": {
+          "value": "{\n  \"acknowledged\": true\n}"
+        }
+      },
+      "name": {
+        "name": "Response",
+        "namespace": "project_routing.delete"
+      },
+      "specLocation": "project_routing/delete/DeleteRoutingResponse.ts#L22-L25"
+    },
+    {
+      "kind": "request",
+      "attachedBehaviors": [
+        "CommonQueryParameters"
+      ],
+      "body": {
+        "kind": "no_body"
+      },
+      "description": "Get named project routing expressions.\n\nGet named project routing expressions.",
+      "examples": {
+        "GetProjectRoutingRequestExample1": {
+          "method_request": "GET /_project_routing/aws-us-only",
+          "summary": "A single expression"
+        }
+      },
+      "inherits": {
+        "type": {
+          "name": "RequestBase",
+          "namespace": "_types"
+        }
+      },
+      "name": {
+        "name": "Request",
+        "namespace": "project_routing.get"
+      },
+      "path": [
+        {
+          "description": "The name of project routing expression",
+          "name": "name",
+          "required": true,
+          "type": {
+            "kind": "instance_of",
+            "type": {
+              "name": "string",
+              "namespace": "_builtins"
+            }
+          }
+        }
+      ],
+      "query": [],
+      "specLocation": "project_routing/get/GetRoutingRequest.ts#L23-L47"
+    },
+    {
+      "kind": "response",
+      "body": {
+        "kind": "value",
+        "codegenName": "result",
+        "value": {
+          "kind": "instance_of",
+          "type": {
+            "name": "ProjectRoutingExpression",
+            "namespace": "project_routing._types"
+          }
+        }
+      },
+      "examples": {
+        "GetProjectResponseExample1": {
+          "summary": "A single expressions",
+          "value": "{\n  \"expression\" : \"_csp:aws AND _region:us*\"\n}"
+        }
+      },
+      "name": {
+        "name": "Response",
+        "namespace": "project_routing.get"
+      },
+      "specLocation": "project_routing/get/GetRoutingResponse.ts#L22-L25"
+    },
+    {
+      "kind": "request",
+      "attachedBehaviors": [
+        "CommonQueryParameters"
+      ],
+      "body": {
+        "kind": "no_body"
+      },
+      "description": "Get named project routing expressions.\n\nGet named project routing expressions.",
+      "examples": {
+        "GetProjectRoutingRequestExample1": {
+          "method_request": "GET /_project_routing/",
+          "summary": "Multiple expressions"
+        }
+      },
+      "inherits": {
+        "type": {
+          "name": "RequestBase",
+          "namespace": "_types"
+        }
+      },
+      "name": {
+        "name": "Request",
+        "namespace": "project_routing.get_many"
+      },
+      "path": [],
+      "query": [],
+      "specLocation": "project_routing/get_many/GetRoutingRequest.ts#L23-L41"
+    },
+    {
+      "kind": "response",
+      "body": {
+        "kind": "value",
+        "codegenName": "result",
+        "value": {
+          "kind": "instance_of",
+          "type": {
+            "name": "NamedProjectRoutingExpressions",
+            "namespace": "project_routing._types"
+          }
+        }
+      },
+      "examples": {
+        "GetProjectResponseExample1": {
+          "summary": "Multiple expressions",
+          "value": "{\n \"aws-us-only\": { \"expression\": \"_csp:aws AND _region:us*\" },\n \"aws-eu-only\": { \"expression\": \"_csp:aws AND _region:eu*\" }\n}"
+        }
+      },
+      "name": {
+        "name": "Response",
+        "namespace": "project_routing.get_many"
+      },
+      "specLocation": "project_routing/get_many/GetRoutingResponse.ts#L22-L25"
+    },
     {
       "kind": "interface",
       "name": {
diff --git a/output/typescript/types.ts b/output/typescript/types.ts
index f228416ea7..54faf6bc1a 100644
--- a/output/typescript/types.ts
+++ b/output/typescript/types.ts
@@ -20107,6 +20107,44 @@ export interface ProjectTagsTagsKeys {
 export type ProjectTagsTags = ProjectTagsTagsKeys
   & { [property: string]: string }
 
+export type ProjectRoutingNamedProjectRoutingExpressions = Record<string, ProjectRoutingProjectRoutingExpression>
+
+export interface ProjectRoutingProjectRoutingExpression {
+  expression: ProjectRoutingRoutingExpression
+}
+
+export type ProjectRoutingRoutingExpression = string
+
+export interface ProjectRoutingCreateRequest extends RequestBase {
+  name: string
+  body?: ProjectRoutingProjectRoutingExpression
+}
+
+export type ProjectRoutingCreateResponse = AcknowledgedResponseBase
+
+export interface ProjectRoutingCreateManyRequest extends RequestBase {
+  body?: ProjectRoutingNamedProjectRoutingExpressions
+}
+
+export type ProjectRoutingCreateManyResponse = AcknowledgedResponseBase
+
+export interface ProjectRoutingDeleteRequest extends RequestBase {
+  name: string
+}
+
+export type ProjectRoutingDeleteResponse = AcknowledgedResponseBase
+
+export interface ProjectRoutingGetRequest extends RequestBase {
+  name: string
+}
+
+export type ProjectRoutingGetResponse = ProjectRoutingProjectRoutingExpression
+
+export interface ProjectRoutingGetManyRequest extends RequestBase {
+}
+
+export type ProjectRoutingGetManyResponse = ProjectRoutingNamedProjectRoutingExpressions
+
 export interface QueryRulesQueryRule {
   rule_id: Id
   type: QueryRulesQueryRuleType
diff --git a/specification/_doc_ids/table.csv b/specification/_doc_ids/table.csv
index eda1a873b9..b19928ed1c 100644
--- a/specification/_doc_ids/table.csv
+++ b/specification/_doc_ids/table.csv
@@ -541,6 +541,7 @@ prevalidate-node-removal,https://www.elastic.co/docs/api/doc/elasticsearch/group
 preview-dfanalytics,https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-ml-preview-data-frame-analytics,https://www.elastic.co/guide/en/elasticsearch/reference/8.18/preview-dfanalytics.html,
 preview-transform,https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-transform-preview-transform,https://www.elastic.co/guide/en/elasticsearch/reference/8.18/preview-transform.html,
 project-tags,https://www.elastic.co/docs/api/doc/elasticsearch-serverless/operation/operation-project-tags,,Get tags
+project-routing,,,Project routing
 put-analytics-collection,https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-search-application-put-behavioral-analytics,https://www.elastic.co/guide/en/elasticsearch/reference/8.18/put-analytics-collection.html,
 put-dfanalytics,https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-ml-put-data-frame-analytics,https://www.elastic.co/guide/en/elasticsearch/reference/8.18/put-dfanalytics.html,
 put-enrich-policy-api,https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-enrich-put-policy,https://www.elastic.co/guide/en/elasticsearch/reference/8.18/put-enrich-policy-api.html,
diff --git a/specification/_json_spec/project_routing.create.json b/specification/_json_spec/project_routing.create.json
new file mode 100644
index 0000000000..ebaed298a5
--- /dev/null
+++ b/specification/_json_spec/project_routing.create.json
@@ -0,0 +1,32 @@
+{
+  "project_routing.create": {
+    "documentation": {
+      "url": null,
+      "description": "Create or update named project routing expression"
+    },
+    "stability": "experimental",
+    "visibility": "public",
+    "headers": {
+      "accept": ["application/json"],
+      "content_type": ["application/json"]
+    },
+    "url": {
+      "paths": [
+        {
+          "path": "/_project_routing/{name}",
+          "methods": ["PUT"],
+          "parts": {
+            "name": {
+              "type": "string",
+              "description": "The name of the project routing expression"
+            }
+          }
+        }
+      ]
+    },
+    "body": {
+      "description": "Project routing expression to save",
+      "required": true
+    }
+  }
+}
diff --git a/specification/_json_spec/project_routing.create_many.json b/specification/_json_spec/project_routing.create_many.json
new file mode 100644
index 0000000000..b7b1827db3
--- /dev/null
+++ b/specification/_json_spec/project_routing.create_many.json
@@ -0,0 +1,26 @@
+{
+  "project_routing.create_many": {
+    "documentation": {
+      "url": null,
+      "description": "Create or update named project routing expressions"
+    },
+    "stability": "experimental",
+    "visibility": "public",
+    "headers": {
+      "accept": ["application/json"],
+      "content_type": ["application/json"]
+    },
+    "url": {
+      "paths": [
+        {
+          "path": "/_project_routing/",
+          "methods": ["PUT"]
+        }
+      ]
+    },
+    "body": {
+      "description": "Project routing expressions to save",
+      "required": true
+    }
+  }
+}
diff --git a/specification/_json_spec/project_routing.delete.json b/specification/_json_spec/project_routing.delete.json
new file mode 100644
index 0000000000..a9244b051b
--- /dev/null
+++ b/specification/_json_spec/project_routing.delete.json
@@ -0,0 +1,28 @@
+{
+  "project_routing.delete": {
+    "documentation": {
+      "url": null,
+      "description": "Delete named project routing expression"
+    },
+    "stability": "experimental",
+    "visibility": "public",
+    "headers": {
+      "accept": ["application/json"],
+      "content_type": ["application/json"]
+    },
+    "url": {
+      "paths": [
+        {
+          "path": "/_project_routing/{name}",
+          "methods": ["DELETE"],
+          "parts": {
+            "name": {
+              "type": "string",
+              "description": "The name of the project routing expression"
+            }
+          }
+        }
+      ]
+    }
+  }
+}
diff --git a/specification/_json_spec/project_routing.get.json b/specification/_json_spec/project_routing.get.json
new file mode 100644
index 0000000000..a383958850
--- /dev/null
+++ b/specification/_json_spec/project_routing.get.json
@@ -0,0 +1,28 @@
+{
+  "project_routing.get": {
+    "documentation": {
+      "url": null,
+      "description": "Get named project routing expression"
+    },
+    "stability": "experimental",
+    "visibility": "public",
+    "headers": {
+      "accept": ["application/json"],
+      "content_type": ["application/json"]
+    },
+    "url": {
+      "paths": [
+        {
+          "path": "/_project_routing/{name}",
+          "methods": ["GET"],
+          "parts": {
+            "name": {
+              "type": "string",
+              "description": "The name of the project routing expression"
+            }
+          }
+        }
+      ]
+    }
+  }
+}
diff --git a/specification/_json_spec/project_routing.get_many.json b/specification/_json_spec/project_routing.get_many.json
new file mode 100644
index 0000000000..79645d273a
--- /dev/null
+++ b/specification/_json_spec/project_routing.get_many.json
@@ -0,0 +1,22 @@
+{
+  "project_routing.get_many": {
+    "documentation": {
+      "url": null,
+      "description": "Get named project routing expressions"
+    },
+    "stability": "experimental",
+    "visibility": "public",
+    "headers": {
+      "accept": ["application/json"],
+      "content_type": ["application/json"]
+    },
+    "url": {
+      "paths": [
+        {
+          "path": "/_project_routing/",
+          "methods": ["GET"]
+        }
+      ]
+    }
+  }
+}
diff --git a/specification/project_routing/_types/RoutingExpression.ts b/specification/project_routing/_types/RoutingExpression.ts
new file mode 100644
index 0000000000..bdf7ce48c9
--- /dev/null
+++ b/specification/project_routing/_types/RoutingExpression.ts
@@ -0,0 +1,31 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { Dictionary } from '@spec_utils/Dictionary'
+
+export type RoutingExpression = string
+
+export class ProjectRoutingExpression {
+  expression: RoutingExpression
+}
+
+export type NamedProjectRoutingExpressions = Dictionary<
+  string,
+  ProjectRoutingExpression
+>
diff --git a/specification/project_routing/create/CreateRoutingRequest.ts b/specification/project_routing/create/CreateRoutingRequest.ts
new file mode 100644
index 0000000000..b3bc7fd933
--- /dev/null
+++ b/specification/project_routing/create/CreateRoutingRequest.ts
@@ -0,0 +1,52 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { RequestBase } from '@_types/Base'
+import { MediaType } from '@_types/common'
+import { ProjectRoutingExpression } from '../_types/RoutingExpression'
+
+/**
+ * Create of update a single named project routing expression.
+ *
+ * Create of update a single named project routing expression.
+ * @doc_id project-routing
+ * @rest_spec_name project_routing.create
+ * @availability serverless stability=experimental visibility=public
+ * @cluster_privileges manage
+ * @doc_tag project-routing
+ */
+export interface Request extends RequestBase {
+  urls: [
+    {
+      path: '/_project_routing/{name}'
+      methods: ['PUT']
+    }
+  ]
+  response_media_type: MediaType.Json
+  path_parts: {
+    /**
+     * The name of project routing expression
+     */
+    name: string
+  }
+  /**
+   * @codegen_name expressions
+   */
+  body: ProjectRoutingExpression
+}
diff --git a/specification/project_routing/create/CreateRoutingResponse.ts b/specification/project_routing/create/CreateRoutingResponse.ts
new file mode 100644
index 0000000000..9e7bdb91cd
--- /dev/null
+++ b/specification/project_routing/create/CreateRoutingResponse.ts
@@ -0,0 +1,25 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { AcknowledgedResponseBase } from '@_types/Base'
+
+export class Response {
+  /** @codegen_name result */
+  body: AcknowledgedResponseBase
+}
diff --git a/specification/project_routing/create/examples/request/CreateProjectRoutingRequestExample1.yaml b/specification/project_routing/create/examples/request/CreateProjectRoutingRequestExample1.yaml
new file mode 100644
index 0000000000..d31d3d9364
--- /dev/null
+++ b/specification/project_routing/create/examples/request/CreateProjectRoutingRequestExample1.yaml
@@ -0,0 +1,7 @@
+summary: A single expression
+method_request: PUT /_project_routing/aws-us-only
+# type: request
+value: |-
+  {
+    "expression" : "_csp:aws AND _region:us*"
+  }
diff --git a/specification/project_routing/create/examples/response/CreateProjectResponseExample1.yaml b/specification/project_routing/create/examples/response/CreateProjectResponseExample1.yaml
new file mode 100644
index 0000000000..080fd4a9d9
--- /dev/null
+++ b/specification/project_routing/create/examples/response/CreateProjectResponseExample1.yaml
@@ -0,0 +1,7 @@
+summary: A single expressions
+# type: response
+# response_code: 201
+value: |-
+  {
+    "acknowledged": true
+  }
diff --git a/specification/project_routing/create_many/CreateRoutingRequest.ts b/specification/project_routing/create_many/CreateRoutingRequest.ts
new file mode 100644
index 0000000000..b48a50da24
--- /dev/null
+++ b/specification/project_routing/create_many/CreateRoutingRequest.ts
@@ -0,0 +1,46 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { RequestBase } from '@_types/Base'
+import { MediaType } from '@_types/common'
+import { NamedProjectRoutingExpressions } from '../_types/RoutingExpression'
+
+/**
+ * Create of update named project routing expressions.
+ *
+ * Create or update named project routing expressions.
+ * @doc_id project-routing
+ * @rest_spec_name project_routing.create_many
+ * @availability serverless stability=experimental visibility=public
+ * @cluster_privileges manage
+ * @doc_tag project-routing
+ */
+export interface Request extends RequestBase {
+  urls: [
+    {
+      path: '/_project_routing'
+      methods: ['PUT']
+    }
+  ]
+  response_media_type: MediaType.Json
+  /**
+   * @codegen_name expressions
+   */
+  body: NamedProjectRoutingExpressions
+}
diff --git a/specification/project_routing/create_many/CreateRoutingResponse.ts b/specification/project_routing/create_many/CreateRoutingResponse.ts
new file mode 100644
index 0000000000..9e7bdb91cd
--- /dev/null
+++ b/specification/project_routing/create_many/CreateRoutingResponse.ts
@@ -0,0 +1,25 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { AcknowledgedResponseBase } from '@_types/Base'
+
+export class Response {
+  /** @codegen_name result */
+  body: AcknowledgedResponseBase
+}
diff --git a/specification/project_routing/create_many/examples/request/CreateProjectRoutingRequestExample1.yaml b/specification/project_routing/create_many/examples/request/CreateProjectRoutingRequestExample1.yaml
new file mode 100644
index 0000000000..d18369879d
--- /dev/null
+++ b/specification/project_routing/create_many/examples/request/CreateProjectRoutingRequestExample1.yaml
@@ -0,0 +1,8 @@
+summary: Multiple expressions
+method_request: PUT /_project_routing/
+# type: request
+value: |-
+  {
+   "aws-us-only": { "expression": "_csp:aws AND _region:us*" },
+   "aws-eu-only": { "expression": "_csp:aws AND _region:eu*" }
+  }
diff --git a/specification/project_routing/create_many/examples/response/CreateProjectResponseExample1.yaml b/specification/project_routing/create_many/examples/response/CreateProjectResponseExample1.yaml
new file mode 100644
index 0000000000..11b3e431ba
--- /dev/null
+++ b/specification/project_routing/create_many/examples/response/CreateProjectResponseExample1.yaml
@@ -0,0 +1,7 @@
+summary: Multiple expressions
+# type: response
+# response_code: 201
+value: |-
+  {
+    "acknowledged": true
+  }
diff --git a/specification/project_routing/delete/DeleteRoutingRequest.ts b/specification/project_routing/delete/DeleteRoutingRequest.ts
new file mode 100644
index 0000000000..f8c01f1238
--- /dev/null
+++ b/specification/project_routing/delete/DeleteRoutingRequest.ts
@@ -0,0 +1,47 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { RequestBase } from '@_types/Base'
+import { MediaType } from '@_types/common'
+
+/**
+ * Delete named project routing expressions.
+ *
+ * Delete named project routing expressions.
+ * @doc_id project-routing
+ * @rest_spec_name project_routing.delete
+ * @availability serverless stability=experimental visibility=public
+ * @cluster_privileges manage
+ * @doc_tag project-routing
+ */
+export interface Request extends RequestBase {
+  urls: [
+    {
+      path: '/_project_routing/{name}'
+      methods: ['DELETE']
+    }
+  ]
+  response_media_type: MediaType.Json
+  path_parts: {
+    /**
+     * The name of project routing expression
+     */
+    name: string
+  }
+}
diff --git a/specification/project_routing/delete/DeleteRoutingResponse.ts b/specification/project_routing/delete/DeleteRoutingResponse.ts
new file mode 100644
index 0000000000..9e7bdb91cd
--- /dev/null
+++ b/specification/project_routing/delete/DeleteRoutingResponse.ts
@@ -0,0 +1,25 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { AcknowledgedResponseBase } from '@_types/Base'
+
+export class Response {
+  /** @codegen_name result */
+  body: AcknowledgedResponseBase
+}
diff --git a/specification/project_routing/delete/examples/request/DeleteProjectRoutingRequestExample1.yaml b/specification/project_routing/delete/examples/request/DeleteProjectRoutingRequestExample1.yaml
new file mode 100644
index 0000000000..4d43169446
--- /dev/null
+++ b/specification/project_routing/delete/examples/request/DeleteProjectRoutingRequestExample1.yaml
@@ -0,0 +1 @@
+method_request: DELETE _project_routing/aws-us-only
diff --git a/specification/project_routing/delete/examples/response/DeleteProjectResponseExample1.yaml b/specification/project_routing/delete/examples/response/DeleteProjectResponseExample1.yaml
new file mode 100644
index 0000000000..87e087808a
--- /dev/null
+++ b/specification/project_routing/delete/examples/response/DeleteProjectResponseExample1.yaml
@@ -0,0 +1,6 @@
+# type: response
+# response_code: 200
+value: |-
+  {
+    "acknowledged": true
+  }
diff --git a/specification/project_routing/get/GetRoutingRequest.ts b/specification/project_routing/get/GetRoutingRequest.ts
new file mode 100644
index 0000000000..cc77b14f7a
--- /dev/null
+++ b/specification/project_routing/get/GetRoutingRequest.ts
@@ -0,0 +1,47 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { RequestBase } from '@_types/Base'
+import { MediaType } from '@_types/common'
+
+/**
+ * Get named project routing expressions.
+ *
+ * Get named project routing expressions.
+ * @doc_id project-routing
+ * @rest_spec_name project_routing.get
+ * @availability serverless stability=experimental visibility=public
+ * @cluster_privileges monitor
+ * @doc_tag project-routing
+ */
+export interface Request extends RequestBase {
+  urls: [
+    {
+      path: '/_project_routing/{name}'
+      methods: ['GET']
+    }
+  ]
+  response_media_type: MediaType.Json
+  path_parts: {
+    /**
+     * The name of project routing expression
+     */
+    name: string
+  }
+}
diff --git a/specification/project_routing/get/GetRoutingResponse.ts b/specification/project_routing/get/GetRoutingResponse.ts
new file mode 100644
index 0000000000..23c6a8c841
--- /dev/null
+++ b/specification/project_routing/get/GetRoutingResponse.ts
@@ -0,0 +1,25 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { ProjectRoutingExpression } from '../_types/RoutingExpression'
+
+export class Response {
+  /** @codegen_name result */
+  body: ProjectRoutingExpression
+}
diff --git a/specification/project_routing/get/examples/request/GetProjectRoutingRequestExample1.yaml b/specification/project_routing/get/examples/request/GetProjectRoutingRequestExample1.yaml
new file mode 100644
index 0000000000..cee8549a7b
--- /dev/null
+++ b/specification/project_routing/get/examples/request/GetProjectRoutingRequestExample1.yaml
@@ -0,0 +1,2 @@
+summary: A single expression
+method_request: GET /_project_routing/aws-us-only
diff --git a/specification/project_routing/get/examples/response/GetProjectResponseExample1.yaml b/specification/project_routing/get/examples/response/GetProjectResponseExample1.yaml
new file mode 100644
index 0000000000..18d4fb6f6c
--- /dev/null
+++ b/specification/project_routing/get/examples/response/GetProjectResponseExample1.yaml
@@ -0,0 +1,7 @@
+summary: A single expressions
+# type: response
+# response_code: 201
+value: |-
+  {
+    "expression" : "_csp:aws AND _region:us*"
+  }
diff --git a/specification/project_routing/get_many/GetRoutingRequest.ts b/specification/project_routing/get_many/GetRoutingRequest.ts
new file mode 100644
index 0000000000..344929a978
--- /dev/null
+++ b/specification/project_routing/get_many/GetRoutingRequest.ts
@@ -0,0 +1,41 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { RequestBase } from '@_types/Base'
+import { MediaType } from '@_types/common'
+
+/**
+ * Get named project routing expressions.
+ *
+ * Get named project routing expressions.
+ * @doc_id project-routing
+ * @rest_spec_name project_routing.get_many
+ * @availability serverless stability=experimental visibility=public
+ * @cluster_privileges monitor
+ * @doc_tag project-routing
+ */
+export interface Request extends RequestBase {
+  urls: [
+    {
+      path: '/_project_routing'
+      methods: ['GET']
+    }
+  ]
+  response_media_type: MediaType.Json
+}
diff --git a/specification/project_routing/get_many/GetRoutingResponse.ts b/specification/project_routing/get_many/GetRoutingResponse.ts
new file mode 100644
index 0000000000..3f4698f47d
--- /dev/null
+++ b/specification/project_routing/get_many/GetRoutingResponse.ts
@@ -0,0 +1,25 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { NamedProjectRoutingExpressions } from '../_types/RoutingExpression'
+
+export class Response {
+  /** @codegen_name result */
+  body: NamedProjectRoutingExpressions
+}
diff --git a/specification/project_routing/get_many/examples/request/GetProjectRoutingRequestExample1.yaml b/specification/project_routing/get_many/examples/request/GetProjectRoutingRequestExample1.yaml
new file mode 100644
index 0000000000..731ed7d8e4
--- /dev/null
+++ b/specification/project_routing/get_many/examples/request/GetProjectRoutingRequestExample1.yaml
@@ -0,0 +1,2 @@
+summary: Multiple expressions
+method_request: GET /_project_routing/
diff --git a/specification/project_routing/get_many/examples/response/GetProjectResponseExample1.yaml b/specification/project_routing/get_many/examples/response/GetProjectResponseExample1.yaml
new file mode 100644
index 0000000000..ac12e2630b
--- /dev/null
+++ b/specification/project_routing/get_many/examples/response/GetProjectResponseExample1.yaml
@@ -0,0 +1,8 @@
+summary: Multiple expressions
+# type: response
+# response_code: 200
+value: |-
+  {
+   "aws-us-only": { "expression": "_csp:aws AND _region:us*" },
+   "aws-eu-only": { "expression": "_csp:aws AND _region:eu*" }
+  }