fcop-mcp — MCP adapter for FCoP

mcp-name: io.github.joinwell52-AI/fcop

fcop-mcp exposes the official FCoP Python Core to Codex, Cursor, Claude Desktop, and other MCP clients. It is an optional adapter over the same protocol—not a second protocol implementation.

Current stable surface

FCoP 4.0 is Stable, Implemented and Released. Package version 4.0.3 provides:

• 49 tools
• 12 resources
• 4 resource templates
• Python 3.10–3.13 support
• Version-routed behavior for existing v3 and v4 workspaces

The original 46-tool surface remains available. The 4.0.1 Branch workflow adds:

Install

Install Core and the MCP adapter together in a dedicated virtual environment:

python -m pip install --upgrade \
  "fcop>=4.0.3,<4.1.0" \
  "fcop-mcp>=4.0.3,<4.1.0"

Verify both distributions:

python -c "from importlib.metadata import version; print('fcop', version('fcop')); print('fcop-mcp', version('fcop-mcp'))"
python -c "from fcop_mcp.server import mcp; print('fcop-mcp ready')"

fcop and fcop-mcp are released in lockstep within the same minor line. Do not mix incompatible minor versions.

CLI — Local Setup, Inspect & Diagnose

CLI = Setup + Observe + Diagnose; MCP = Work.

Install & Verify

In an activated Python 3.10+ environment:

python -m pip install fcop

fcop version
fcop doctor
fcop init --root ./my-project
fcop status --root ./my-project
fcop validate --root ./my-project

For the optional MCP Tool Catalog:

python -m pip install fcop-mcp

fcop tools
fcop tools merge_branches --json

Once installed, the CLI can initialize, inspect, validate and diagnose locally and offline. doctor does not access the network or modify Host configuration. Package installation itself may need a package index; offline installation requires locally available packages. The CLI does not perform create_task, approval, Branch, merge or authorization work operations; use MCP or the Python API for those. Installing fcop does not create Host instruction files. Normal v4 workspace state belongs in <project>/fcop/, never in project-root AGENTS.md, CLAUDE.md or Cursor rules. Existing atomic initialization staging and failed-initialization evidence are preserved; customer files are never cleaned up automatically. migrate is a separate explicit legacy operation, not an automatic package-upgrade step. tools requires the optional MCP package and never starts a server or installs it automatically.

CLI reference · 中文 CLI 参考.

Configure an MCP client

CLI = Setup + Observe + Diagnose; MCP = Work. Inspect this adapter's authoritative Tool Catalog without starting a server:

pip install fcop-mcp==4.0.3
fcop version
fcop doctor
fcop tools
fcop tools merge_branches --json

The public fcop_mcp.catalog.get_tool_catalog(name=None) query returns fresh, sorted name/disposition rows from disposition.TOOLS. It imports no MCP runtime, does not start a server and does not duplicate handler signatures. Unknown names raise KeyError. CLI Catalog, registry and real tools/list have equal sets; 4.0.3 does not add, remove or change any MCP work tool.

See the CLI reference.

A fixed virtual environment gives predictable startup and avoids importing a different editable fcop package from another project.

{
  "mcpServers": {
    "fcop": {
      "command": "/absolute/path/to/venv/bin/python",
      "args": ["-m", "fcop_mcp"],
      "env": {
        "FCOP_PROJECT_DIR": "/absolute/path/to/repository"
      }
    }
  }
}

On Windows, command is the virtual environment's Scripts\\python.exe. Restart the MCP host after changing its configuration.

Installation only installs the packages. It does not initialize a workspace, migrate existing files, deploy rules, publish anything, or modify another application.

Parallel Branch workflow

create_branch → agents write REPORTs → inspect_family → merge_branches

A PM, coordinating agent, or authorized human supplies the convergence decision. FCoP does not invent that decision. Core validates the exact REPORT heads and family digest, uses a family-scoped cross-process lock, and records one durable REVIEW. An exact retry is idempotent; a conflict fails without partial writes.

Core owns validation, persistence, locking, and recovery. The MCP adapter validates the tool request and forwards it to the public Core API.

See the Branch merge contract and example or the Chinese version.

Authority and safety

Profile and evaluator authority must be adopted by the trusted application when the server starts. A role name, TASK field, Profile document, or tool argument does not grant authority by itself.

FCoP uses a local stdio transport by default. Relay support is an explicit optional extra and is never activated merely because a WebSocket dependency or environment variable is present.

Package boundary

You need fcop-mcp when an MCP client must operate FCoP through tools. Python applications using Project directly only need fcop.

中文简介

FCoP 4.0 已正式稳定发布，当前包版本为 4.0.3。 fcop-mcp 是 FCoP Core 的 MCP 适配层，当前提供 49 个 Tools、12 个 Resources 和 4 个 Templates。4.0.1 新增 create_branch、 inspect_family、merge_branches，让 MCP Host 能创建并发 Branch、 检查 REPORT 家族并提交原子合并。合并判断由 PM、Agent 或人类给出，Core 负责校验、落盘、幂等和崩溃恢复。

Documentation

• Authoritative install prompt (EN)
• 权威安装提示词（中文）
• Installation prompt MCP Resource
• Repository
• MCP tools reference
• Protocol introduction
• 中文协议介绍
• Branch merge
• Changelog
• Historical upgrades

License

MIT — LICENSE