mcpbeat

Attest MCP Server

io.github.attestagents/attest-mcp
answering

Attest is answering right now. Last checked 2 min ago. 32 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 5 · +52% w/w
a month agotoday
Uptime history 40 hours of history
40 hours agonow
100.0%
Uptime 24h
92 of 92 checks
2
Tools
read from the server
454 ms
Response time
average over 24h
32
Installs / week
npm and PyPI

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 min ago.

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"
    }
  }
}

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

URLTransportStateLatencyChecked
https://attestagent.org/api/mcp streamable-http answering 418 ms 2 min ago

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 92 of 92 checks got a reply (100.0%), average response time 454 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 454 ms on average, which is faster than 27% of all working MCP servers we measure. 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 32 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.