Files
firefrost-operations-manual/docs/tasks-index/task-111-trinity-core-web-mcp.md
Claude 5e854b8e5e Complete Trinity Core Web MCP implementation spec
Gemini consultation provided full production-ready code:
- MCP SDK with SSE transport
- OAuth shim (auto-approve for single user)
- CORS for claude.ai
- Complete index.js replacement (Blocks A-F)

Task #111 upgraded from Desktop to Native Web:
- No Claude Desktop needed
- Works directly in claude.ai browser
- ~2 hour implementation

Key insight: Custom remote MCPs ARE supported in claude.ai web
via HTTP Streamable + OAuth flow.

Chronicler #76
2026-04-11 07:39:04 +00:00

2.1 KiB

task_number, title, status, priority, is_blocker, owner, tags, estimated_hours
task_number title status priority is_blocker owner tags estimated_hours
111 Trinity Core Native Web MCP Connector Planned P1-High false Michael
trinity-core
mcp
claude-web
infrastructure
2

Trinity Core Native Web MCP Connector

Upgrade Trinity Core from REST API to native Claude.ai web connector using MCP SDK with SSE transport and OAuth shim.

Why

Currently Claude can't call Trinity Core directly. This upgrade enables Claude to execute commands on Firefrost servers directly from claude.ai web — no Desktop app, no curl commands, no manual intervention.

This is the RV dream: Full infrastructure access from any browser, anywhere.

Prerequisites

  • Trinity Core v1 deployed
  • SSH keys configured
  • Cloudflare Tunnel active

Full Implementation

See docs/consultations/gemini-mcp-web-implementation-2026-04-11.md for complete code (Blocks A-F) and step-by-step instructions.

Quick Summary

  1. Update package.json — Add "type": "module", install @modelcontextprotocol/sdk and cors
  2. Replace index.js — MCP SDK with SSE transport + OAuth shim
  3. Register in Claude.ai — Settings → Connectors → Add custom → https://mcp.firefrostgaming.com/mcp

Architecture

Claude.ai (browser)
    ↓ MCP over SSE
Trinity Core (mcp.firefrostgaming.com)
    ↓ SSH
Target Server

New Endpoints

Endpoint Purpose
GET /.well-known/oauth-protected-resource OAuth discovery
GET /authorize Auto-approve redirect
POST /token Return Bearer token
GET /mcp Establish SSE stream
POST /mcp/messages Receive tool calls

Tools Exposed

Tool Description
list_servers Get available Firefrost servers
run_command Execute SSH command on specified server

Testing

Before registering with Claude.ai:

npx @modelcontextprotocol/inspector node index.js

Security Notes

  • CORS configured for https://claude.ai only
  • OAuth shim auto-approves (single user)
  • Consider adding express-rate-limit for hardening