Attest MCP Server

by attestagents Your server? Claim it

answering

Attest is answering right now. Last checked 12 min ago. 29 installs a week from npm. It exposes 2 tools. Last commit 7 Jun 2026.

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

Installs per day peak 23 · avg 6 · +52% w/w

a month agotoday

Uptime history 47 days of history

47 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

640 ms

Response time

average over 24h

Installs / week

npm and PyPI

Nothing serious here today

Today is the operative word: we check Attest every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

[mcp_servers.attest-mcp]
url = "https://attestagent.org/api/mcp"

.cursor/mcp.json

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

.vscode/mcp.json

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

This one needs environment variables set before it will start: ATTEST_BASE_URL (Override the Attest API base URL. Defaults to https://attestagent.org. Only needed for self-hosting or testing.). The author declared them in the registry entry; get the values from the project itself.

Available tools 2

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

attest

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.

attest_scan

Scan an agent payment endpoint (x402 / HTTP 402) and return a letter grade A to F with a safety verdict before paying.

Endpoints

URL	Transport	State	Latency	Checked
https://attestagent.org/api/mcp	streamable-http	answering	398 ms	12 min ago

Alternatives to Attest

same job, measured the same way

Pulsefeed X402

by nikolife2016

Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.

76 installs/wk 11 tools answering

x402 Merchant Check

by gradientdecisions

Pre-payment merchant trust checks for x402 agents on Base and Solana.

1 tools answering

402

by 402

Trust layer for agent payments (x402, Base): verify agents, risk scores, signed escrow verdicts.

55 installs/wk local only

AgentGrade

by agentgrade

Scan any website for AI agent readiness, payment protocols, and discovery endpoints

4 tools answering

Presidio Hardened X402 MCP

by presidio-v

Pre-payment PII screener for x402 — catches emails, SSNs, names before agents sign.

57 installs/wk local only

Trust

by agntor

Trust layer for AI agents: identity, guard, redact, escrow, and x402 payments.

30 installs/wk local only

AgentIndex

by cognivis

Trust scores and on-chain payment receipts for x402 services.

4 tools answering

Intelligence MCP

by goodmeta

Agent payments ecosystem intelligence. Scans GitHub/HN/npm across AP2, ACP, x402, MPP, UCP.

64 installs/wk 3 tools answering

Attest — questions

Answers built from our own checks of this server.

What can Attest do?

It exposes 2 tools, read directly from the server on our last check. Among them: attest_guard, attest_scan. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Attest working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 640 ms. The bar chart above shows every period we have measured.

How do I connect Attest?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Attest need an API key?

No. Attest completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Attest?

It answers our handshake in 640 ms on average, which is faster than 19% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use Attest?

The npm package attest-mcp was installed 29 times in the last week. Week over week that is +52%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Attest open source?

Yes — it is published under the MIT licence, written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.