Attest

io.github.attestagents/attest-mcpVersion 1.0.0

Scan agent payment endpoints (x402, AP2, L402, MPP, 402) for a trust grade A-F before paying.

Status

Responds415 msNov 14, 2026, 14:45 UTCAnswered our handshake without sign-in.

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Data from the official MCP Registry, checked by run.zero. How we check

Streamable HTTP

https://attestagent.org/api/mcpResponds415 msNov 14, 2026, 14:45 UTC

No sign-in

claude mcp add --transport http attest-mcp https://attestagent.org/api/mcp

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Settings > Connectors > Add custom connector
Name: attest-mcp
Remote MCP server URL: https://attestagent.org/api/mcp

{
  "mcpServers": {
    "attest-mcp": {
      "url": "https://attestagent.org/api/mcp"
    }
  }
}

code --add-mcp '{"name":"attest-mcp","type":"http","url":"https://attestagent.org/api/mcp"}'

Streamable HTTP

npm: attest-mcp 1.0.0

Package only

claude mcp add attest-mcp -- npx -y attest-mcp@1.0.0

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2 tools

Tools of Attest
	Description		Read-only	Idempotent	Open world
`attest_guard`Verify a live 402 payment offer at the moment of spend. Pass the EXACT offer you just received (url, payTo, amount, asset, network) and get an allow / warn / block verdict with machine-readable reasons: wallet mismatch vs the verified payout wallet, price swaps vs the last verified quote, danger flags, blocklisted wallets, and typosquats. Call this AFTER receiving a 402 offer and BEFORE authorizing the payment.	Verify a live 402 payment offer at the moment of spend. Pass the EXACT offer you just received (url, payTo, amount, asset, network) and get an allow / warn / block verdict with machine-readable reasons: wallet mismatch vs the verified payout wallet, price swaps vs the last verified quote, danger flags, blocklisted wallets, and typosquats. Call this AFTER receiving a 402 offer and BEFORE authorizing the payment.	Not declared	Not declared	Not declared	Not declared
`attest_scan`Scan an agent payment endpoint (x402 / HTTP 402) and return a letter grade A to F with a safety verdict before paying.	Scan an agent payment endpoint (x402 / HTTP 402) and return a letter grade A to F with a safety verdict before paying.	Not declared	Not declared	Not declared	Not declared

Registry status: Active
Published: Jun 7, 2026
Updated: Jun 7, 2026
Website: https://attestagent.org/⁠ (opens in a new tab)
Repository: https://github.com/attestagents/Install-attest-agent⁠ (opens in a new tab)
Categories (suggested): Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared