feat MCP adapter: functional adapter and tool calls. Tools need to be fine grained
This commit is contained in:
Irina Rueegg
parent
88c647a428
commit
e5831f69a8
@ -21,11 +21,13 @@ import subprocess
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import sys
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from pathlib import Path
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import asyncio
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import pprint
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import requests
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import httpx
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from dotenv import load_dotenv
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#from backend.agent.mcp_server_adapter import MCPToolRAGAdapter
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#from mcp_server_adapter import MCPToolAdapter # Import from current directory for easier testing without package structure
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from backend.agent.mcp_server_adapter import MCPToolAdapter
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# ── mcp server initialization ────────────────────────────────────────────────────────────────
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@ -206,20 +208,23 @@ def build_all_tool_description() -> str:
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descriptions = []
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for tool in all_tools:
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params = tool.inputSchema.get("properties", {})
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if params:
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param_lines = []
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for pname, pinfo in params.items():
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ptype = pinfo.get("type", "any")
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pdesc = pinfo.get("description", "")
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param_lines.append(f" - {pname} ({ptype}): {pdesc}")
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param_str = "\n".join(param_lines)
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else:
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param_str = " (none)"
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descriptions.append(
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f"- {tool.name}: {tool.description}\n"
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f"Parameters:\n{param_str}"
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)
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pprint.pprint(f"{tool}")
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descriptions.append(f"- {tool['tool_name']}: {tool['tool_description']}")
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#
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#params = tool.tool_description.inputSchema.get("properties", {})
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#if params:
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# param_lines = []
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# for pname, pinfo in params.items():
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# ptype = pinfo.get("type", "any")
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# pdesc = pinfo.get("description", "")
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# param_lines.append(f" - {pname} ({ptype}): {pdesc}")
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# param_str = "\n".join(param_lines)
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#else:
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# param_str = " (none)"
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#descriptions.append(
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# f"- {tool.name}: {tool.description}\n"
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# f"Parameters:\n{param_str}"
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#)
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return "\n".join(descriptions)
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@ -232,6 +237,7 @@ async def dispatch_tool(tool_name: str, arguments: dict) -> str:
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return f"DONE: {summary}"
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try:
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print(f"Trying to call tool '{tool_name}' in dispatch_tool through MCPToolAdapter...")
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result = await adapter.call_tool(tool_name, arguments)
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if result.isError:
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@ -455,28 +461,11 @@ class CodingAgent:
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return {"thought": "Max iterations reached.", "tool": "done",
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"arguments": {"summary": "Stopped: max iterations reached."}}
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#current_context = self.messages[-1]["content"] if self.messages else ""
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self.iteration += 1
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self.messages = trim_messages(self.messages)
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#tool_prompt = await get_tools_for_prompt(current_context)
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#
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#enhanced_messages = self.messages.copy()
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#
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#enhanced_messages.append({
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# "role": "system",
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# "content": f"""
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#Available tools for this step:
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#
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#{tool_prompt}
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#
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#You MUST choose one of these tools.
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#"""
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#})
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try:
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raw = await self._call_api(self.messages)
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raw = self._call_api(self.messages)
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raw = _strip_code_fences(raw)
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action = json.loads(raw)
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except json.JSONDecodeError:
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@ -591,4 +580,38 @@ class CodingAgent:
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})
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self.pending_action = None
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def main():
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"""Example of how to use the CodingAgent in a simple loop."""
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agent = CodingAgent()
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task = "Write a Python function that returns the nth Fibonacci number."
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agent.start_task(task)
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if agent.pending_action:
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print(f"Initial proposed action: {agent.pending_action['action']}")
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while not agent.is_done:
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action = asyncio.run(agent.propose_next_action())
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print(f"Proposed action: {action}")
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if action["tool"] == "done":
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print("Task completed.")
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break
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else:
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user_feedback = input("Approve this action? (y/n) ")
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if user_feedback.lower() == "y":
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result = asyncio.run(agent.approve())
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print(f"Tool result: {result}")
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elif user_feedback.lower() == "n":
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feedback = input("Enter feedback for the agent: ")
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agent.reject(feedback)
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if result["is_done"]:
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print("Task completed.")
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break
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if __name__ == "__main__":
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main()
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@ -1,5 +1,6 @@
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import asyncio
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import json
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import sys
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from typing import List, Dict, Any
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from pathlib import Path
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@ -37,17 +38,21 @@ class MCPToolAdapter:
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print(f"Testing connection to {server_name}...")
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self.servers[server_name] = params
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server_script = str(Path(__file__).parent / params["args"][0])
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if params.get("command") in ["py", "python", "python3"]:
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server_command = sys.executable
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else:
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server_command = params["command"]
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server_params = StdioServerParameters(
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command=params["command"],
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args=params.get("args", [])
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command=server_command,
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args=[server_script],
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)
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try:
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# Verbindung aufbauen
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async with stdio_client(server_params) as (read_stream, write_stream):
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print(f"Connected to {server_name}. Initializing session...")
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#print(f"read_stream: {read_stream}\nwrite_stream: {write_stream}")
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async with ClientSession(read_stream, write_stream) as session:
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await session.initialize()
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print(f"Session initialized for {server_name}. Requesting tools...")
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@ -61,7 +66,7 @@ class MCPToolAdapter:
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t_params = tool.inputSchema.get("properties", {})
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if t_params:
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param_lines = []
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for pname, pinfo in params.items():
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for pname, pinfo in t_params.items():
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ptype = pinfo.get("type", "any")
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pdesc = pinfo.get("description", "")
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param_lines.append(f" - {pname} ({ptype}): {pdesc}")
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@ -93,18 +98,25 @@ class MCPToolAdapter:
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async def call_tool(self, tool_name: str, arguments: Dict[str, Any]):
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"""Findet den richtigen Server für ein Tool und führt es aus."""
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# Suche in der Registry nach dem passenden Server
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tool_entry = next((t for t in self.tool_registry if t["name"] == tool_name), None)
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tool_entry = next((t for t in self.tool_registry if t["tool_name"] == tool_name), None)
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if not tool_entry:
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print(f"Tool '{tool_name}' not found in MCP adapter registry.")
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return f"Error: Tool '{tool_name}' not found in registry."
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server_name = tool_entry["server"]
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server = self.servers.get(server_name)
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s_params = self.servers.get(server_name)
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if s_params:
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server_script = str(Path(__file__).parent / s_params["args"][0])
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if s_params.get("command") in ["py", "python", "python3"]:
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server_command = sys.executable
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else:
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server_command = s_params["command"]
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if server:
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server_params = StdioServerParameters(
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command=server["command"],
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args=server.get("args", [])
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command=server_command,
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args=[server_script],
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)
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try:
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@ -133,7 +145,7 @@ def main():
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asyncio.run(adapter.initialize_all_servers())
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print("All servers initialized. Registered tools:")
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for tool in adapter.get_all_tools():
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print(f"- {tool['name']} (from {tool['server']})")
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print(f"- {tool['tool_name']} (from {tool['server']})")
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if __name__ == "__main__":
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@ -1,10 +1,10 @@
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{"FileSearchServer": {
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"command": "python3",
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"command": "py",
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"args": ["servers/mcp_server_file_search.py"]
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},
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"WebSearchServer": {
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"command": "python3",
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"command": "py",
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"args": ["servers/mcp_server_web_search.py"],
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"env": {
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"DDGS_API_KEY": "your_ddgs_api_key_here"
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@ -12,7 +12,7 @@
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},
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"CodeExecutionServer": {
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"command": "python3",
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"command": "py",
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"args": ["servers/mcp_server_code_execution.py"]
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}
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@ -137,3 +137,4 @@ def search_files(query: str) -> str:
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if __name__ == "__main__":
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mcp.run(transport="stdio")
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