Rein MCP Server

Rein is an MCP integration. Spend limits for AI agents that pay with x402: every paywall is policy-checked before a cent moves.

Packages and local setup

The published npm package is @reinconsole/mcp, version 0.6.1. Its declared MCP transport is stdio.

The package declares REIN_AGENT_FILE: Path to the rein-agent.json written by npx @reinconsole/init (engine URL, agent id, API key, wallet).; REIN_ENGINE_URL: Policy engine base URL. Required unless REIN_AGENT_FILE is set.; REIN_AGENT_ID: The one agent this server speaks for. Required unless REIN_AGENT_FILE is set.; REIN_ENGINE_API_KEY: Bearer key for the engine, ideally an evaluate key narrowed to this agent.; REIN_PAYER_PRIVATE_KEY: Agent wallet key. Omit for advisory mode: policy is checked, nothing is paid.; REIN_NETWORK_PROFILE: testnet (default) or mainnet: which network's 402s this server will pay..

Before connecting

Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.

Project and source

View the publisher’s registry entry · Project repository · Project website. This profile uses version 0.6.1 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.

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