fcop-mcp 0.6.3

stdio MCP server for the FCoP Python library: exposes the fcop package's Project, task, report, and issue APIs to MCP clients (Cursor, Claude Desktop, …). Optional bridge, not a second protocol; depends on fcop 0.6.x, FastMCP, websockets.

fcop-mcp

MCP (stdio) server — the optional IDE bridge for the same FCoP stack. It wraps the official fcop library; it is not a second “FCoP product” and does not replace the protocol text.

• What FCoP is (protocol only, product-agnostic): docs/fcop-standalone.en.md (中文 fcop-standalone.md)
• Pure Python lib / pip install fcop: filesystem + Project API, PyYAML only — PyPI fcop (see that package’s description and Documentation).
• This package (fcop-mcp): pip install fcop-mcp — stdio tools/resources for clients; same repo, folder mcp/.
• Source home: joinwell52-AI/FCoP

Already on 0.6.x and just upgrading? See docs/upgrade-fcop-mcp.md (pip install -U both fcop and fcop-mcp in the MCP venv, then restart the IDE; 0.6.3+ also documents how to refresh on-disk protocol rule files via redeploy_rules).

What can the server actually do? The 26 MCP tools and 10 read-only resources are indexed (with grouping, when-to-call, and parameter cheatsheet) in docs/mcp-tools.md. Authoritative descriptions remain in source docstrings (mcp/src/fcop_mcp/server.py).

0.6.3 ships ADR-0006 — host-neutral protocol-rule distribution. New tool fcop_report is now the canonical session/init report (its header carries a [Versions] block that flags drift between the wheel-bundled rules and the project-local .cursor/rules/ copy). New ADMIN-only tool redeploy_rules writes the four protocol-rule targets — .cursor/rules/fcop-rules.mdc, .cursor/rules/fcop-protocol.mdc, AGENTS.md, CLAUDE.md — so Cursor, Claude Code CLI, and Codex CLI all see the same rules. Legacy unbound_report stays as a deprecated alias of fcop_report (emits DeprecationWarning, removed in 0.7.0). See docs/releases/0.6.3.md for the full migration story.

The fcop on PyPI must be the FCoP library (summary mentions File-based Coordination Protocol, pyyaml, no fastmcp inside fcop). If pip show fcop says MCP toolbox or from fcop import Issue fails, you have a wrong distribution — fix with a clean venv and reinstall (see Verify below).

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One-page install (what we recommend for customers)

Goal: a dedicated Python environment for MCP only, so no other project’s .pth or wrong fcop shadows the real library.

A. Recommended: dedicated venv + python -m fcop_mcp

1. Python 3.10+ on PATH (3.10–3.13 tested in CI; avoid very new 3.14 until CI covers it).
2. Create a venv (paths are examples — adjust if you like):

Windows (PowerShell)

$v = "$env:USERPROFILE\.cursor\fcop_mcp_venv"
py -3.10 -m venv $v
& "$v\Scripts\pip.exe" install -U pip
& "$v\Scripts\pip.exe" install -U "fcop" "fcop-mcp"

macOS / Linux

VENV="$HOME/.cursor/fcop_mcp_venv"
python3 -m venv "$VENV"
"$VENV/bin/pip" install -U pip
"$VENV/bin/pip" install -U "fcop" "fcop-mcp"

3. Cursor user config — file:

• Windows: %USERPROFILE%\.cursor\mcp.json
• macOS / Linux: ~/.cursor/mcp.json

Add or merge (use the real python path from step 2):

{
  "mcpServers": {
    "fcop": {
      "command": "C:\\Users\\YOUR_USER\\.cursor\\fcop_mcp_venv\\Scripts\\python.exe",
      "args": ["-m", "fcop_mcp"]
    }
  }
}

On macOS, command is like /Users/YOUR_USER/.cursor/fcop_mcp_venv/bin/python.

4. Fully restart Cursor (or Developer: Reload Window), then open MCP and confirm fcop is connected.

Why this path? uvx (below) is convenient but first run can take a long time to download dependencies; some MCP hosts time out. A fixed venv avoids that and avoids name conflicts with other editable installs of fcop on the same machine.

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B. Alternative: uvx fcop-mcp (quickest to try, slower cold start)

{
  "mcpServers": {
    "fcop": {
      "command": "uvx",
      "args": ["fcop-mcp"]
    }
  }
}

Install uv first. First connection may download many wheels — wait for it; don’t spam reconnect. If you see Aborted or timeouts, use A above.

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Verify (2 commands)

In the same venv you use for MCP:

python -c "from fcop import Issue, Project; print('fcop OK', Project)"
python -c "from fcop_mcp.server import mcp; print('fcop-mcp OK')"

If the first line fails, fcop is not the FCoP library — uninstall and reinstall in a clean venv (fcop / fcop-mcp from PyPI, same 0.6.x minor in lockstep with the current release).

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Claude Desktop

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

Use the same command / args as Cursor (either A with your venv python, or B with uvx).

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Upgrading from uvx / args: ["fcop"] (0.5.x)

"fcop": { "command": "uvx", "args": ["fcop-mcp"] }

The mcpServers key name can stay "fcop". Full guide:
docs/MIGRATION-0.6.md

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Where the server looks for the project

Resolution order (see ADR-0003):

1. Last set_project_dir in this MCP session
2. FCOP_PROJECT_DIR
3. Legacy 0.5.x env var CODEFLOW_PROJECT_DIR (still recognized with a deprecation warning — use FCOP_PROJECT_DIR)
4. Walk up for docs/agents/fcop.json / fcop-rules.mdc / docs/agents/tasks/
5. Current working directory

To pin a folder in config:

"env": { "FCOP_PROJECT_DIR": "D:/path/to/your/repo" }

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Stability (0.6.x)

Tool and resource shapes are additive-only within 0.6.x (stability charter). Configs that work on fcop-mcp 0.6.0+ should keep working on later 0.6.x patch releases.

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License

MIT — see LICENSE.