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Attest

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

v1.0.0 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality77good
Trust90of 100
Uptime, 30 days98%
Latency p50131 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "attest-mcp": {
      "type": "http",
      "url": "https://attestagent.org/api/mcp"
    }
  }
}
claude mcp add --transport http attest-mcp https://attestagent.org/api/mcp
[mcp_servers.attest-mcp]
url = "https://attestagent.org/api/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "attest-mcp": {
      "type": "remote",
      "url": "https://attestagent.org/api/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "attest-mcp": {
      "type": "http",
      "url": "https://attestagent.org/api/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=attest-mcp&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXR0ZXN0YWdlbnQub3JnL2FwaS9tY3AifQ%3D%3D"
}
{
  "servers": {
    "attest-mcp": {
      "type": "http",
      "url": "https://attestagent.org/api/mcp"
    }
  }
}
{
  "mcpServers": {
    "attest-mcp": {
      "httpUrl": "https://attestagent.org/api/mcp"
    }
  }
}
extensions:
  "attest-mcp":
    enabled: true
    name: "attest-mcp"
    type: streamable_http
    uri: "https://attestagent.org/api/mcp"
    timeout: 300

Quality 77 / 100good

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2024-11-05; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
  • n/a
    protocol.statelessonly applies to 2026-07-28 servers
  • pass
    protocol.transportstreamable HTTP
  • n/a
    protocol.list_ttlonly applies to 2026-07-28 servers
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene71 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • fail
    tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: attest_guard (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); attest_scan (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
  • pass
    tools.token_costabout 328 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changesno tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependencies67 · weight 15
  • pass
    deps.known_vulnsno known advisory in 98 resolved packages
  • fail
    deps.mcp_sdk_version@modelcontextprotocol/sdk 1.30.1 has 1 known advisory (GHSA-6qxp-vccf-f47h); update @modelcontextprotocol/sdk to 1.31.0 or later
  • pass
    deps.resolvable[email protected] resolved: 98 packages

2 tools, about 328 tokens to load them all · tool set 4749b7b49be3 · checked 2026-10-20 11:40 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 90 / 100

provenance90
liveness99
freshness65
hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-98% ~updated-135d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

[email protected] npm97 dependencies, resolved · MCP SDK @modelcontextprotocol/sdk 1.30.1 · advisories checked 2026-10-19

advisoryseveritypackagefixed in
GHSA-6qxp-vccf-f47hMCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP serverhigh@modelcontextprotocol/[email protected]MCP SDK, directfixed in 1.31.0

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://attestagent.org/api/mcp streamable-httpnoneyes98%131 ms2024-11-052026-10-20
packageregistryversionruntimesecrets
attest-mcpnpm1.0.0–

Tools (2)

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

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "io.github.attestagents/attest-mcp",
  "title": "Attest",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://attestagent.org/api/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "packages": [
    {
      "version": "1.0.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "attest-mcp",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "ATTEST_BASE_URL",
          "description": "Override the Attest API base URL. Defaults to https://attestagent.org. Only needed for self-hosting or testing."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/attestagents/Install-attest-agent",
    "source": "github"
  },
  "websiteUrl": "https://attestagent.org",
  "description": "Scan agent payment endpoints (x402, AP2, L402, MPP, 402) for a trust grade A-F before paying."
}