Attest

Overview

Attest is an MCP server that scans agent payment endpoints—including x402, AP2, L402, MPP, and 402 protocols—and assigns a trust grade from A to F before any payment is processed. This helps you evaluate the safety and reliability of payment handlers before committing funds.

Run Attest in two ways: use the hosted endpoint at https://attestagent.org/api/mcp with no setup required, or install it locally via npx -y attest-mcp. The current release is v1.0.0, published under the MIT license with source code available at attestagents/Install-attest-agent on GitHub. No authentication is needed.

Attest is listed in the Finance category on mcp.site and works with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and others. If you maintain Attest, claim this listing to verify ownership, earn a Verified badge, and keep your details up to date.

Installation

Settings → Connectors → Add custom connector
Name: Attest
URL:  https://attestagent.org/api/mcp