MCP Servers

focal-mcp

Centralizes AI behavior rules and applies them across tools like Codex, Claude Code, and Cursor, enabling agents to fetch up-to-date rules before responding.

Category

README

FOCAL MCP Server

FOCAL MCP (Framework for Orchestrated Central AI ruLes) is a local MCP server that centralizes AI behavior rules and applies them across tools like Codex, Claude Code, and Cursor.

Quick Start

Prerequisites

uv installed (required for uvx)

Run the server (recommended)

uvx --from focal-mcp-server focal-mcp-server

Open the Web UI:

http://127.0.0.1:8765

MCP endpoint:

http://127.0.0.1:8765/mcp

WebSocket notifications:

ws://127.0.0.1:8765/mcp/ws

Configure Your MCP Client

FOCAL MCP uses streamable HTTP, so you start the server yourself and point clients to the URL above.

Codex (example)

Add the following to ~/.codex/config.toml:

[mcp_servers.focal]
enabled = true
url = "http://127.0.0.1:8765/mcp"

Restart Codex after saving.

Edit Rules (Live)

Rules live outside the repo in:

~/.focal_mcp/workspace/
  core/
    system.md
    style.md
    safety.md
    tool_policy.md
  agents/

Use the Web UI to edit files. Updates are applied immediately.

How Rules Are Applied

FOCAL MCP exposes a tool named focal_rules. Agents should call it before every response to fetch the latest rules.

If rules do not update immediately:

Ensure the client is connected to the MCP server.
Ensure the client calls focal_rules before responding.
Reconnect the client if needed.

Project Prompt (Codex)

The repository-level prompt is stored in:

agents.md

Roadmap

Project-specific rule management for multi-repo workflows
UI/UX improvements for rule editing and visibility

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