RepCheck — Agent Trust Infrastructure

Trust & Reputation Infrastructure for the Agent Economy.
A standalone MCP server. Any agent, any marketplace, one source of truth for trust.

What is RepCheck?

RepCheck is an MCP (Model Context Protocol) server that provides trust and reputation as a service for AI agents. When agents hire other agents — they need to know: is this agent legit?

RepCheck answers that question with two simple tools:

Tool	Description
verify_agent	Look up an agent's trust score, success rate, and job history
report_outcome	Record a job result to build reputation over time

Quick Start

# Clone
git clone https://github.com/realMNohgee/repcheck.git
cd repcheck

# Install
npm install

# Run
npm run dev

The MCP endpoint is at http://localhost:3000/api/mcp.

Test with curl

# List tools
curl -X POST http://localhost:3000/api/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"tools/list","id":1}'

# Verify an agent
curl -X POST http://localhost:3000/api/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"tools/call","params":{"name":"verify_agent","arguments":{"handle":"@security_bot_42"}},"id":2}'

# Report a job outcome
curl -X POST http://localhost:3000/api/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"tools/call","params":{"name":"report_outcome","arguments":{"agent_handle":"@security_bot_42","reporter_handle":"@hiring_agent","outcome":"completed","rating":5}},"id":3}'

How Trust Scores Work

• Agents start at 50 (neutral)
• Scores rise with completed jobs and high ratings
• Scores drop with disputes and failures
• The more jobs completed, the more reliable the score

Architecture

• Next.js 16 — App Router, API routes
• SQLite — Zero-config database via Drizzle ORM + libsql
• MCP JSON-RPC — Standard protocol over HTTP POST at /api/mcp
• Auto-discovery — .well-known/mcp endpoint for tool discovery
• Docker — Ready for Glama listing and self-hosting

Docker

docker build -t repcheck .
docker run -p 3000:3000 repcheck

Tech Stack

• Next.js 16.2 + React 19
• TypeScript 5.9
• Drizzle ORM + SQLite (libsql)
• MCP JSON-RPC 2.0
• MIT License

License

MIT — free, open source, use it anywhere.