agent402.dev

Agent402 Direct x402 HTTP Resources

Eight x402-priced and four free direct HTTP resources on agent402.dev, described by one OpenAPI 3.1 contract (info.version 1.7.0, 12 operations, 14 schemas): the 5.00 USDC AI Discovery Site Audit with its free eligibility check, sample, methodology and frozen case study; the 1.00 USDC Verified URL Evidence Snapshot; a 0.05 USDC website preflight; a 0.01 USDC x402 endpoint health check and a 5.99 USDC x402 launch audit; a 0.01 USDC deterministic task-day planner; and two 5.99 USDC ZIP downloads. Every paid route answers an unpaid request with HTTP 402 and a PAYMENT-REQUIRED challenge (exact scheme, USDC on eip155:8453, 300-second window) and is paid by retrying the identical request with PAYMENT-SIGNATURE; every report carries a stable id and a SHA-256 digest of itself.

Documentation GitHub OpenAPI

Operations 12

POST /task-day-plan Prioritize and schedule up to 50 tasks for $0.01 #

POST /website-preflight Preflight one public website with seven HEAD-only checks #

GET /url-evidence Capture bounded HTTP, TLS, and SHA-256 evidence for $1 #

POST /site-release-audit AI Discovery Site Audit — AEO/GEO Fix Pack for one public URL #

POST /site-release-audit/eligibility Check main-document delivery eligibility before paying #

GET /site-release-audit/sample.json Inspect a full production-format audit sample for example.com #

GET /site-release-audit/methodology.json Inspect the live fixed audit method and fail-closed rules #

GET /site-release-audit/proof/v1/case-study.json Verify one frozen v1 base 22-check before/after audit case #

POST /audit-x402 Audit one public x402 v2 GET endpoint #

POST /x402-health Check one public x402 GET endpoint for $0.01 #

GET /download Download Wayfarer's Deck quest-card kit #

GET /qr-campaign-pack Download the Bulk QR Campaign Pack #

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OpenAPI Specification

# Verbatim YAML rendering of https://agent402.dev/openapi.json (OpenAPI 3.1.0, info.version 1.7.0),
# fetched 2026-09-19 by the API Evangelist enrichment pipeline. Content is unchanged; the byte-exact JSON
# original is openapi/_original/agent402-dev-openapi.json (sha256 02ff416ef8126a8be17bb6041385e2de88d7afb2bacd58350ece120fc4719c4c).
# method: searched. Ownership: servers[0] is https://agent402.dev, info.title names agent402.dev and
# info.contact.url is https://agent402.dev/site-release-audit — the provider's own host.
openapi: 3.1.0
info:
  title: AI Discovery Site Audit — AEO/GEO Fix Pack | agent402.dev
  version: 1.7.0
  description: 'Primary product: five fixed remediation slots for JSON-LD, metadata, robots.txt, llms.txt, and sitemap.xml.
    Copy-paste code is included only when observed evidence permits; otherwise the slot reports an explicit review,
    none, or needs-input action. Includes a $5, 22-check technical SEO/AEO/GEO audit and seven fixed agent-discovery
    findings for one public HTTPS page with at least one public IPv4 DNS answer. Existing auxiliary x402 tools remain
    available on their documented paths.'
  x-guidance: 'Use siteReleaseAudit for the primary $5 AI Discovery Site Audit. First POST the exact body to the
    free /site-release-audit/eligibility support route; it checks bounded main-document delivery but returns no
    score, findings, root observations, or remediations. Then submit the unchanged body promptly with an x402-capable
    buyer client that validates the exact v2 Base-USDC terms and supplies PAYMENT-SIGNATURE. Plain curl is only
    a 402 probe: it inspects the challenge, is not checkout, and does not pay. Direct x402 cancels settlement on
    a 4xx/5xx report response; Payan challenges before seller input validation and wrong input can still settle.
    Inspect GET /site-release-audit/sample.json and GET /site-release-audit/methodology.json for the current v1.1
    contract. GET /site-release-audit/proof/v1/case-study.json is the immutable seller-controlled base proof; it
    predates and does not prove root-file observation.'
  contact:
    name: AI Discovery Site Audit
    url: https://agent402.dev/site-release-audit
servers:


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# Full source: https://raw.githubusercontent.com/api-evangelist/agent402-dev/refs/heads/main/openapi/agent402-dev-openapi.yml