mcp-research-collective

A multi-agent research system built on the Model Context Protocol (MCP). Specialized agents (Planner → Researcher → Reasoner) collaborate via a thread-safe blackboard of shared beliefs, exposed as MCP tools that can be wired into Claude Desktop or any other MCP host.

What this demonstrates

• Model Context Protocol — a real, runnable FastMCP server with seven tools (blackboard_set, blackboard_get, blackboard_query, blackboard_dump, plus add/subtract/multiply/divide).

• Blackboard architecture — a thread-safe shared belief store (Belief dataclass + Blackboard class with RLock-protected upsert/read/query, TTLs, regex queries, and tag filters).

• Multi-agent orchestration — Planner decomposes the prompt → Researcher fetches facts from a JSON KB → Reasoner synthesizes the final answer. Agents only know about the connector, never each other; they coordinate solely through the blackboard.

• Two interchangeable transports — an in-process MCPConnector for fast notebook/test runs, and the actual STDIO FastMCP server for production / Claude Desktop integration.

Related MCP server: AI Blog MCP Agent

Tech stack

• Model Context Protocol Python SDK (mcp[cli]) — FastMCP server, ClientSession, STDIO transport

• Python 3.10+, asyncio, threading.RLock

• pytest for deterministic blackboard / agent tests

• No LLM dependency — the agents in this demo orchestrate over a structured KB. The MCP server is the surface that you (or any MCP host) can attach an LLM to.

Architecture

flowchart TB
    U[User Prompt] --> P[PlannerAgent<br/>decomposes into subtasks]
    P -->|publishes 'task.list'| BB[(Blackboard<br/>thread-safe<br/>belief store)]
    BB -->|reads tasks| R[ResearchAgent<br/>fetches from kb/*.json]
    R -->|publishes belief.what / why / how| BB
    BB -->|reads beliefs| S[ReasonerAgent<br/>synthesizes answer]
    S -->|publishes answer.v1| BB
    S --> Out[Final answer<br/>+ full blackboard state]

    subgraph "MCP Surface"
        BB <-->|set/get/query/dump| MCP[FastMCP server<br/>STDIO transport]
        MCP <-->|JSON-RPC| Claude[Claude Desktop /<br/>any MCP host]
    end

Quickstart

# 1. Python env
python -m venv .venv
source .venv/Scripts/activate   # Windows: .venv\Scripts\activate
pip install -e .[dev]

# 2. Run the deterministic tests
pytest

# 3. Run the in-process orchestrator from the CLI
mcp-research-orchestrator "What is a Faculty Senate, why have one, and how is it built?"

# 4. Run the standalone MCP server (for Claude Desktop or another MCP host)
mcp-research-collective

Programmatic usage (in-process, no STDIO)

from mcp_research_collective import run_collective

answer, blackboard_state_json = run_collective(
    "What is the role of a Faculty Senate and why have one?"
)

print(answer)
# # Synthesized Answer
#
# **What it is**
# - Elected body of faculty that represents the academic community...
# ...
# **Why it matters**
# - Ensures academic decisions are not solely administrative
# ...

Use with Claude Desktop

This is the differentiator: the same code that runs the in-process demo is also a working MCP server you can connect to Claude Desktop. Add this to your claude_desktop_config.json:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "research-collective": {
      "command": "python",
      "args": ["-m", "mcp_research_collective.entrypoints.run_server"],
      "env": {
        "PYTHONPATH": "/absolute/path/to/mcp-research-collective/src"
      }
    }
  }
}

After restarting Claude Desktop, you'll see four blackboard_* tools and four math tools available in the Claude UI. Try:

Use the blackboard_set tool to publish a fact about my project deadline, then blackboard_query to find it back.

Adding a new research topic

Drop a JSON file in src/mcp_research_collective/kb/ with the schema:

{
  "key": "topic.subkey",
  "what": ["fact 1", "fact 2"],
  "why":  ["fact 1", "fact 2"],
  "how":  ["fact 1", "fact 2"]
}

Then construct the orchestrator with topic_key="topic.subkey". No code changes required.

What I learned

The Planner→Researcher→Reasoner pattern with a blackboard makes each agent's responsibility small enough to reason about in isolation. The system dynamically scales its effort based on the prompt: asking only "what" and "why" results in the Planner publishing only define.what and explain.why. The Researcher fetches exactly what is needed, and the blackboard tracks this selective context gathering.

The biggest win wasn't the MCP wire format — it was the discipline of forcing every state mutation through mcp.call("blackboard.set", ...). That single chokepoint makes the whole system trivially observable: dump_state() shows exactly what each agent contributed, when, and with what confidence. Adding a fourth agent (like a Critic or a Cache) is straightforward because the contract is simply "read tagged beliefs, write tagged beliefs."

Project layout

mcp-research-collective/
├── src/mcp_research_collective/
│   ├── blackboard.py        # Belief + thread-safe Blackboard
│   ├── connector.py         # In-process MCPConnector (set/get/query/dump)
│   ├── kb/*.json            # Knowledge base topics (drop-in JSON files)
│   ├── knowledge_base.py    # Loader for kb/*.json
│   ├── agents.py            # PlannerAgent, ResearchAgent, ReasonerAgent
│   ├── orchestrator.py      # CollectiveOrchestrator + run_collective
│   ├── mcp_server.py        # FastMCP server exposing blackboard + math tools
│   └── entrypoints/
│       ├── run_server.py        # `python -m ... run_server`
│       └── run_orchestrator.py  # `python -m ... run_orchestrator "<q>"`
├── tests/                   # blackboard + connector + orchestrator + KB tests
└── notebooks/demo.ipynb     # walkthrough with full blackboard state dump