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agent-audit + page-read (x402)

by agent-audit-x402 · remote · no sign-in to list tools · v0.1.1 · published by GitHub user agent-audit-x402

Pay-per-call page reader, quote check, link check and x402 seller audit. USDC on Base via x402.

Changes · 3
CompareRegistry entry

7 tools: 3 change things and 4 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http x402-tools https://mcp.agent-audit.workers.dev/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warncheck_links

    The server marks "check_links" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":false,"openWorldHint":true}; The name "check_links" says "link": a word for a change.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

7 tools

Changes things 3Claude Code: ask
  • audit_x402_sellerPaid, $0.02 USDC on Base via x402 (agent-audit).No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Paid, $0.02 USDC on Base via x402 (agent-audit). Read-only x402 seller and agent-readiness audit of one origin: live 402 challenge per paid route, price vs catalog, llms.txt, /.well-known/x402, openapi.json, dead doc links. JSON score, findings and fixes. Grades measure protocol conformance, not legitimacy. Call without payment to get the x402 requirements.

    Annotations the server declares

    • title: Audit an x402 seller
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
  • quote_checkPaid, $0.005 USDC on Base via x402 (agent-audit).No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Paid, $0.005 USDC on Base via x402 (agent-audit). Fetches the page now and reports whether the quote is really there: found_exact/found_near/partial/not_found/page_unavailable, similarity, context and page sha256. Call without payment to get the x402 requirements.

    Annotations the server declares

    • title: Is this quote on that page?
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
Only reads 4Claude Code: allow
  • list_servicesFree.No findings

    Why it is in this group

    • The name "list_services" says "list": a word for reading.
    Description, as the server wrote it
    Free. Lists the paid tools, their USDC prices on Base, the upstream x402 HTTP endpoints, and how to pay.

    Annotations the server declares

    • title: List services and prices
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
  • preview_auditFree, rate-limited (10 per hour).No findings

    Why it is in this group

    • The name "preview_audit" says "preview": a word for reading.
    Description, as the server wrote it
    Free, rate-limited (10 per hour). Audit score, grade and fail/warn counts for one origin (no findings), from agent-audit's free preview.

    Annotations the server declares

    • title: Free audit score
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
  • preview_pageFree, rate-limited (10 per hour).No findings

    Why it is in this group

    • The name "preview_page" says "preview": a word for reading.
    Description, as the server wrote it
    Free, rate-limited (10 per hour). Title and the first 300 characters of a public page, from page-read's free preview.

    Annotations the server declares

    • title: Free page preview
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
  • read_pagePaid, $0.001 USDC on Base via x402 (page-read).No findings

    Why it is in this group

    • The name "read_page" says "read": a word for reading.
    Description, as the server wrote it
    Paid, $0.001 USDC on Base via x402 (page-read). Fetches one public web page now and returns clean markdown or text with title, canonical URL, published time and sha256. No JavaScript execution. Fetch failures and unreadable pages are not charged. Call without payment to get the x402 requirements.

    Annotations the server declares

    • title: Read a web page as markdown
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.1.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http x402-tools https://mcp.agent-audit.workers.dev/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__x402-tools__list_services",
      "mcp__x402-tools__read_page",
      "mcp__x402-tools__preview_page",
      "mcp__x402-tools__preview_audit"
    ],
    "ask": [
      "mcp__x402-tools__audit_x402_seller",
      "mcp__x402-tools__check_links",
      "mcp__x402-tools__quote_check"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as x402-tools. Review it before you use it.