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How to let personas call tools from MCP servers with Talk with Me

Enable tool calls so personas can fetch web pages or run queries through Streamable HTTP MCP servers.

Authorization notice. Talk with Me is dual-use. Only use it on software, sites and systems you own or have explicit permission to test.

Remote script. Tool calls run on the MCP servers you list, so only add servers you trust and that you have checked.

Who it is forA developer who wants personas to act on live data, such as reading a web page or querying a database, through servers they run or trust.

The problemA plain chat model cannot read current web pages or query your own data sources.

The outcomePersonas with tool calls enabled can use configured MCP tools during a reply, and the app can show those tool calls.

What you need first

  • Python 3.10 or newer
  • A locally running llama.cpp server with an OpenAI-compatible API (the README mentions the --api flag)
  • A clone of the TalkWithMe repository and its dependencies installed from requirements.txt

Steps

  1. Start one or more MCP servers that expose the Streamable HTTP transport.
  2. Add each server to the mcp.servers list in settings.yaml, and keep max_tool_iterations at the default of 8 unless you need a change.
  3. Restart the app, because the mcp section is only read on startup.
  4. Open the Personas editor and set allow_tool_calls to true for the persona that should use tools.
  5. Run uvicorn app.main:app --host 0.0.0.0 --port 8000 --reload, then ask the persona to fetch a web page and check the tool call in the chat.

Prompt for your agent

Use the TalkWithMe repo to configure MCP server <mcp-server-url> in settings.yaml, enable tool calls for the persona <persona-name>, and restart the app. Ask the persona to use the tool on <test-input> and report the tool call shown in the chat. Verify that the tool result appears in the reply.

Caveat. The README says the mcp section has no UI and must be edited in settings.yaml, with a restart after each change.

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