Merge pull request #167 from tcdent/crew-hierarchical

Support hierarchical reasoning and manager agents

Author: bboynton97

agentstack/cli/agentstack_data.py

@@ -51,10 +51,16 @@ def to_json(self):
 
 
 class ProjectStructure:
-    def __init__(self):
+    def __init__(
+        self,
+        method: str = "sequential",
+        manager_agent: Optional[str] = None,
+    ):
         self.agents = []
         self.tasks = []
         self.inputs = {}
+        self.method = method
+        self.manager_agent = manager_agent
 
     def add_agent(self, agent):
         self.agents.append(agent)
@@ -67,6 +73,8 @@ def set_inputs(self, inputs):
 
     def to_dict(self):
         return {
+            'method': self.method,
+            'manager_agent': self.manager_agent,
             'agents': self.agents,
             'tasks': self.tasks,
             'inputs': self.inputs,

agentstack/cli/cli.py

@@ -388,7 +388,10 @@ def insert_template(
         template_version=template_data.template_version if template_data else 0,
     )
 
-    project_structure = ProjectStructure()
+    project_structure = ProjectStructure(
+        method=template_data.method if template_data else "sequential",
+        manager_agent=template_data.manager_agent if template_data else None,
+    )
     project_structure.agents = design["agents"]
     project_structure.tasks = design["tasks"]
     project_structure.inputs = design["inputs"]
@@ -471,6 +474,7 @@ def export_template(output_filename: str):
                 role=agent.role,
                 goal=agent.goal,
                 backstory=agent.backstory,
+                allow_delegation=False,  # TODO
                 model=agent.llm,  # TODO consistent naming (llm -> model)
             )
         )
@@ -507,11 +511,12 @@ def export_template(output_filename: str):
         )
 
     template = TemplateConfig(
-        template_version=2,
+        template_version=3,
         name=metadata.project_name,
         description=metadata.project_description,
         framework=get_framework(),
         method="sequential",  # TODO this needs to be stored in the project somewhere
+        manager_agent=None,  # TODO
         agents=agents,
         tasks=tasks,
         tools=tools,

agentstack/cli/run.py

@@ -84,7 +84,7 @@ def _import_project_module(path: Path):
     assert spec.loader is not None  # appease type checker
 
     project_module = importlib.util.module_from_spec(spec)
-    sys.path.append(str((path / MAIN_FILENAME).parent))
+    sys.path.insert(0, str((path / MAIN_FILENAME).parent))
     spec.loader.exec_module(project_module)
     return project_module
 

agentstack/main.py

@@ -200,8 +200,7 @@ def main():
     except Exception as e:
         update_telemetry(telemetry_id, result=1, message=str(e))
         print(term_color("An error occurred while running your AgentStack command:", "red"))
-        print(e)
-        sys.exit(1)
+        raise e
 
     update_telemetry(telemetry_id, result=0)
 

agentstack/proj_templates.py

@@ -1,4 +1,4 @@
-from typing import Literal
+from typing import Optional, Literal
 import os, sys
 from pathlib import Path
 import pydantic
@@ -19,20 +19,63 @@ class TemplateConfig_v1(pydantic.BaseModel):
     tools: list[dict]
     inputs: list[str]
 
-    def to_v2(self) -> 'TemplateConfig':
-        return TemplateConfig(
+    def to_v2(self) -> 'TemplateConfig_v2':
+        return TemplateConfig_v2(
             name=self.name,
             description=self.description,
             template_version=2,
             framework=self.framework,
             method=self.method,
-            agents=[TemplateConfig.Agent(**agent) for agent in self.agents],
-            tasks=[TemplateConfig.Task(**task) for task in self.tasks],
-            tools=[TemplateConfig.Tool(**tool) for tool in self.tools],
+            agents=[TemplateConfig_v2.Agent(**agent) for agent in self.agents],
+            tasks=[TemplateConfig_v2.Task(**task) for task in self.tasks],
+            tools=[TemplateConfig_v2.Tool(**tool) for tool in self.tools],
             inputs={key: "" for key in self.inputs},
         )
 
 
+class TemplateConfig_v2(pydantic.BaseModel):
+    class Agent(pydantic.BaseModel):
+        name: str
+        role: str
+        goal: str
+        backstory: str
+        model: str
+
+    class Task(pydantic.BaseModel):
+        name: str
+        description: str
+        expected_output: str
+        agent: str
+
+    class Tool(pydantic.BaseModel):
+        name: str
+        agents: list[str]
+
+    name: str
+    description: str
+    template_version: Literal[2]
+    framework: str
+    method: str
+    agents: list[Agent]
+    tasks: list[Task]
+    tools: list[Tool]
+    inputs: dict[str, str]
+
+    def to_v3(self) -> 'TemplateConfig':
+        return TemplateConfig(
+            name=self.name,
+            description=self.description,
+            template_version=3,
+            framework=self.framework,
+            method=self.method,
+            manager_agent=None,
+            agents=[TemplateConfig.Agent(**agent.dict()) for agent in self.agents],
+            tasks=[TemplateConfig.Task(**task.dict()) for task in self.tasks],
+            tools=[TemplateConfig.Tool(**tool.dict()) for tool in self.tools],
+            inputs=self.inputs,
+        )
+
+
 class TemplateConfig(pydantic.BaseModel):
     """
     Interface for interacting with template configuration files.
@@ -51,6 +94,8 @@ class TemplateConfig(pydantic.BaseModel):
         The framework the template is for.
     method: str
         The method used by the project. ie. "sequential"
+    manager_agent: Optional[str]
+        The name of the agent that manages the project.
     agents: list[TemplateConfig.Agent]
         A list of agents used by the project.
     tasks: list[TemplateConfig.Task]
@@ -66,6 +111,7 @@ class Agent(pydantic.BaseModel):
         role: str
         goal: str
         backstory: str
+        allow_delegation: bool = False
         model: str
 
     class Task(pydantic.BaseModel):
@@ -80,9 +126,10 @@ class Tool(pydantic.BaseModel):
 
     name: str
     description: str
-    template_version: Literal[2]
+    template_version: Literal[3]
     framework: str
     method: str
+    manager_agent: Optional[str]
     agents: list[Agent]
     tasks: list[Task]
     tools: list[Tool]
@@ -134,8 +181,10 @@ def from_json(cls, data: dict) -> 'TemplateConfig':
         try:
             match data.get('template_version'):
                 case 1:
-                    return TemplateConfig_v1(**data).to_v2()
+                    return TemplateConfig_v1(**data).to_v2().to_v3()
                 case 2:
+                    return TemplateConfig_v2(**data).to_v3()
+                case 3:
                     return cls(**data)  # current version
                 case _:
                     raise ValidationError(f"Unsupported template version: {data.get('template_version')}")

agentstack/templates/crewai/{{cookiecutter.project_metadata.project_slug}}/src/crew.py

@@ -8,12 +8,13 @@ class {{cookiecutter.project_metadata.project_name|replace('-', '')|replace('_',
 
     # Agent definitions
     {%- for agent in cookiecutter.structure.agents %}
-    @agent
+    {% if not agent.name == cookiecutter.structure.manager_agent %}@agent{% endif %}
     def {{agent.name}}(self) -> Agent:
         return Agent(
             config=self.agents_config['{{ agent.name }}'],
             tools=[],  # Pass in what tools this agent should have
-            verbose=True
+            verbose=True,
+            {% if agent.allow_delegation %}allow_delegation=True{% endif %}
         )
     {%- endfor %}
 
@@ -32,7 +33,7 @@ def crew(self) -> Crew:
         return Crew(
             agents=self.agents, # Automatically created by the @agent decorator
             tasks=self.tasks, # Automatically created by the @task decorator
-            process=Process.sequential,
+            process=Process.{{cookiecutter.structure.method}},
+            {% if cookiecutter.structure.manager_agent %}manager_agent=self.{{cookiecutter.structure.manager_agent}}(),{% endif %}
             verbose=True,
-            # process=Process.hierarchical, # In case you wanna use that instead https://docs.crewai.com/how-to/Hierarchical/
         )

agentstack/templates/proj_templates/reasoning.json

@@ -0,0 +1,54 @@
+{
+    "name": "reasoning",
+    "description": "Implement test time compute using an agentic framework to emulate o1 with Claude.",
+    "template_version": 3,
+    "framework": "crewai",
+    "agents": [{
+        "name": "manager",
+        "role": "Manager",
+        "goal": "Delegate requests to multiple sub-agents to find the best solution to the user's request using the best resources available. Break up the user's request into very small tasks and delegate them to the right agents. <user_input>{query}</user_input>",
+        "backstory": "You are responsible for delegating tasks to the right AI agents and ensuring that the team works together to achieve the best results.",
+        "allow_delegation": true,
+        "model": "anthropic/claude-3-5-sonnet-20240620"
+    }, {
+        "name": "triage", 
+        "role": "Triage",
+        "goal": "You are responsible for interpreting the request and exploring possible ways of solving the problem. Delegate the actual problem solving to one of your workers. <original_user_input>{query}</original_user_input>",
+        "backstory": "You are responsible for interpreting the user's request and deciding which agent is best suited to solve the problem. You are the first point of contact for the system.",
+        "model": "anthropic/claude-3-5-sonnet-20240620"
+    }, {
+        "name": "worker", 
+        "role": "Worker",
+        "goal": "You are responsible for solving the problem that the triage agent has delegated to you. You should use your knowledge and skills to find the best solution to the user's request.",
+        "backstory": "You are responsible for solving the problem that the triage agent has delegated to you. You are an expert in your field and you should use your knowledge and skills to find the best solution to the user's request.",
+        "model": "anthropic/claude-3-5-sonnet-20240620"
+    }, {
+        "name": "fact_checker", 
+        "role": "Fact Checker",
+        "goal": "You are responsible for checking the solution that the worker agent has come up with. You should make sure that the solution is correct and that it meets the user's requirements. Evaluate the response in regards to the user's original question, and provide a concise answer that is factually correct. Now is a great time to omit any questionable statements and inconclusive data. <user_original_input>{query}</user_original_input>",
+        "backstory": "You are responsible for checking the solution that the worker agent has come up with. You should make sure that the solution is correct and that it meets the user's requirements. You are the last line of defense before the solution is presented to the user.",
+        "model": "anthropic/claude-3-5-sonnet-20240620"
+    }],
+    "tasks": [{
+        "name": "identify_plan_of_action",
+        "description": "Identify the problem being presented and come up with steps to solve it. Restate the problem in your own words, and identify 3 to 12 steps you can take to explore possible solutions. Do not actually present solutions to the problem yourself, but pass it to a new agent to do so.",
+        "expected_output": "A detailed description of the problem being presented and a list of possible steps that can be taken to explore possible solutions.",
+        "agent": "triage"
+    }, {
+        "name": "find_solution",
+        "description": "Identify the problem being presented to you and come up with the best solution you can think of. After you have come up with a solution, pass it to a new agent to check it.",
+        "expected_output": "A concise, complete solution to the problem being presented.",
+        "agent": "worker"
+    }, {
+        "name": "check_solution",
+        "description": "Review the problem and solution being presented and determine wether you think it is correct or not.",
+        "expected_output": "Reiterate the solution to be factually correct.",
+        "agent": "fact_checker"
+    }],
+    "tools": [],
+    "method": "hierarchical",
+    "manager_agent": "manager",
+    "inputs": {
+        "query": "What is the meaning of life, the universe, and everything?"
+    }
+}