diff --git a/.gitignore b/.gitignore
index 46ab1e4..9487e48 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ dist-deno
 /*.tgz
 .idea/
 .eslintcache
+oidc
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index e564a44..ca683ed 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.45.0"
+  ".": "0.46.0"
 }
diff --git a/.stats.yml b/.stats.yml
index 8ed1b33..4bc313e 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 104
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/kernel%2Fkernel-20310988401243aa5c4a2e2ac6cba5dd90873fb7b83497a2d50c691352c0dd7b.yml
-openapi_spec_hash: e19e650b4b2c8c8fde1f739c4aab6b33
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/kernel%2Fkernel-f7024f4171c7c4ec558de1c27f338b1089ffddd0d2dbfdb9bb9f9c2abe8f47bf.yml
+openapi_spec_hash: ced43682b49e73a2862f99b49abb4fcd
 config_hash: 16e4457a0bb26e98a335a1c2a572290a
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 79ee895..a40c82b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## 0.46.0 (2026-04-06)
+
+Full Changelog: [v0.45.0...v0.46.0](https://github.com/kernel/kernel-node-sdk/compare/v0.45.0...v0.46.0)
+
+### Features
+
+* Add optional url parameter to proxy check endpoint ([eb53ca2](https://github.com/kernel/kernel-node-sdk/commit/eb53ca23e7ec879ff93ca9c3b76413f98c6dbd87))
+
+
+### Bug Fixes
+
+* **internal:** gitignore generated `oidc` dir ([2e37932](https://github.com/kernel/kernel-node-sdk/commit/2e3793282c496980415e3fac8cedaaff49d143a5))
+
 ## 0.45.0 (2026-03-30)
 
 Full Changelog: [v0.44.0...v0.45.0](https://github.com/kernel/kernel-node-sdk/compare/v0.44.0...v0.45.0)
diff --git a/api.md b/api.md
index 383b68b..1d47fcb 100644
--- a/api.md
+++ b/api.md
@@ -245,7 +245,7 @@ Methods:
 - <code title="get /proxies/{id}">client.proxies.<a href="./src/resources/proxies.ts">retrieve</a>(id) -> ProxyRetrieveResponse</code>
 - <code title="get /proxies">client.proxies.<a href="./src/resources/proxies.ts">list</a>() -> ProxyListResponse</code>
 - <code title="delete /proxies/{id}">client.proxies.<a href="./src/resources/proxies.ts">delete</a>(id) -> void</code>
-- <code title="post /proxies/{id}/check">client.proxies.<a href="./src/resources/proxies.ts">check</a>(id) -> ProxyCheckResponse</code>
+- <code title="post /proxies/{id}/check">client.proxies.<a href="./src/resources/proxies.ts">check</a>(id, { ...params }) -> ProxyCheckResponse</code>
 
 # Extensions
 
diff --git a/package-lock.json b/package-lock.json
index 93d8599..06480a4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@onkernel/sdk",
-  "version": "0.45.0",
+  "version": "0.46.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@onkernel/sdk",
-      "version": "0.45.0",
+      "version": "0.46.0",
       "license": "Apache-2.0",
       "devDependencies": {
         "@arethetypeswrong/cli": "^0.17.0",
diff --git a/package.json b/package.json
index 30c14f2..9611257 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@onkernel/sdk",
-  "version": "0.45.0",
+  "version": "0.46.0",
   "description": "The official TypeScript library for the Kernel API",
   "author": "Kernel <>",
   "types": "dist/index.d.ts",
diff --git a/src/client.ts b/src/client.ts
index 81e51e9..9b34f29 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -92,6 +92,7 @@ import {
 import { ProfileCreateParams, ProfileListParams, Profiles } from './resources/profiles';
 import {
   Proxies,
+  ProxyCheckParams,
   ProxyCheckResponse,
   ProxyCreateParams,
   ProxyCreateResponse,
@@ -1021,6 +1022,7 @@ export declare namespace Kernel {
     type ProxyListResponse as ProxyListResponse,
     type ProxyCheckResponse as ProxyCheckResponse,
     type ProxyCreateParams as ProxyCreateParams,
+    type ProxyCheckParams as ProxyCheckParams,
   };
 
   export {
diff --git a/src/resources/index.ts b/src/resources/index.ts
index 18963e7..a5b082c 100644
--- a/src/resources/index.ts
+++ b/src/resources/index.ts
@@ -103,4 +103,5 @@ export {
   type ProxyListResponse,
   type ProxyCheckResponse,
   type ProxyCreateParams,
+  type ProxyCheckParams,
 } from './proxies';
diff --git a/src/resources/proxies.ts b/src/resources/proxies.ts
index 0e0d271..fdf7b92 100644
--- a/src/resources/proxies.ts
+++ b/src/resources/proxies.ts
@@ -42,10 +42,19 @@ export class Proxies extends APIResource {
   }
 
   /**
-   * Run a health check on the proxy to verify it's working.
+   * Run a health check on the proxy to verify it's working. Optionally specify a URL
+   * to test reachability against a specific target. For ISP and datacenter proxies,
+   * this reliably tests whether the target site is reachable from the proxy's stable
+   * exit IP. For residential and mobile proxies, the exit node varies between
+   * requests, so this validates proxy configuration and connectivity rather than
+   * guaranteeing site-specific reachability.
    */
-  check(id: string, options?: RequestOptions): APIPromise<ProxyCheckResponse> {
-    return this._client.post(path`/proxies/${id}/check`, options);
+  check(
+    id: string,
+    body: ProxyCheckParams | null | undefined = {},
+    options?: RequestOptions,
+  ): APIPromise<ProxyCheckResponse> {
+    return this._client.post(path`/proxies/${id}/check`, { body, ...options });
   }
 }
 
@@ -1183,6 +1192,22 @@ export namespace ProxyCreateParams {
   }
 }
 
+export interface ProxyCheckParams {
+  /**
+   * An optional URL to test reachability against. If provided, the proxy check will
+   * test connectivity to this URL instead of the default test URLs. Only HTTP and
+   * HTTPS schemes are allowed, and the URL must resolve to a public IP address. For
+   * ISP and datacenter proxies, the exit IP is stable, so a successful check
+   * reliably indicates that subsequent browser sessions will reach the target site
+   * with the same IP. For residential and mobile proxies, the exit node changes
+   * between requests, so a successful check validates proxy configuration but does
+   * not guarantee that a subsequent browser session will use the same exit IP or
+   * reach the same site — it is useful for verifying credentials and connectivity,
+   * not for predicting site-specific behavior.
+   */
+  url?: string;
+}
+
 export declare namespace Proxies {
   export {
     type ProxyCreateResponse as ProxyCreateResponse,
@@ -1190,5 +1215,6 @@ export declare namespace Proxies {
     type ProxyListResponse as ProxyListResponse,
     type ProxyCheckResponse as ProxyCheckResponse,
     type ProxyCreateParams as ProxyCreateParams,
+    type ProxyCheckParams as ProxyCheckParams,
   };
 }
diff --git a/src/version.ts b/src/version.ts
index 27643a4..e6f7960 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1 +1 @@
-export const VERSION = '0.45.0'; // x-release-please-version
+export const VERSION = '0.46.0'; // x-release-please-version
diff --git a/tests/api-resources/proxies.test.ts b/tests/api-resources/proxies.test.ts
index 237c7dc..63142f8 100644
--- a/tests/api-resources/proxies.test.ts
+++ b/tests/api-resources/proxies.test.ts
@@ -78,4 +78,12 @@ describe('resource proxies', () => {
     expect(dataAndResponse.data).toBe(response);
     expect(dataAndResponse.response).toBe(rawResponse);
   });
+
+  // Mock server tests are disabled
+  test.skip('check: request options and params are passed correctly', async () => {
+    // ensure the request options are being passed correctly by passing an invalid HTTP method in order to cause an error
+    await expect(
+      client.proxies.check('id', { url: 'url' }, { path: '/_stainless_unknown_path' }),
+    ).rejects.toThrow(Kernel.NotFoundError);
+  });
 });