Attest
Grade third-party agent payment endpoints A–F across x402, AP2, L402, MPP, and 402 before your agent sends money.
Overview
Attest MCP is a MCP server for the Ship phase that scans agent payment endpoints (x402, AP2, L402, MPP, 402) and assigns a trust grade A–F before payment.
What is this MCP server?
- Scans agent payment endpoints for protocols x402, AP2, L402, MPP, and HTTP 402
- Produces an A–F trust grade before your agent pays an unfamiliar endpoint
- npm package attest-mcp with optional ATTEST_BASE_URL override for self-hosting
- Remote MCP at attestagent.org/api/mcp plus stdio local install (v1.0.0)
- GitHub attestagents/Install-attest-agent for setup documentation
- 5 payment protocol families listed: x402, AP2, L402, MPP, 402
- Trust scale A–F
- Version 1.0.0
What problem does it solve?
Solo builders cannot easily tell if an agent payment endpoint is trustworthy before their MCP client starts settling USDC or protocol-specific charges.
Who is it for?
Builders enabling autonomous or semi-autonomous agent payments who need a quick trust scan across modern 402-family protocols.
Skip if: Projects with no agent payments, or teams that already run full PCI/compliance programs on every vendor manually.
What do I get? / Deliverables
After adding Attest, you get a letter-grade trust report on payment endpoints so you can block or approve agent spending with evidence.
- A–F trust grade for scanned agent payment endpoints
- Coverage across x402, AP2, L402, MPP, and 402 payment styles
- stdio or hosted MCP integration for pre-payment checks
Recommended MCP Servers
Journey fit
How it compares
Payment-endpoint trust scanner MCP, not a wallet, billing platform, or generic vulnerability scanner skill.
Common Questions / FAQ
Who is Attest MCP for?
It is for developers shipping agents that pay for APIs via x402 and related protocols who want a trust grade before money leaves the wallet.
When should I use Attest MCP?
Use it during ship security review whenever you add a new paid MCP server or HTTP 402 endpoint your agent will call in production.
How do I add Attest MCP to my agent?
Install the npm package attest-mcp for stdio or configure the remote URL https://attestagent.org/api/mcp; set ATTEST_BASE_URL only if self-hosting or testing.