USDC Payment Verifier

Endpoints (33 live)

• POST /agents/v1/structured/data-freshness — Evaluate supplied observation timestamps against caller-declared TTL and the server clock, or an explicitly supplied historical reference. Return stale/within_declared_ttl/future_observation/unknown. Does not authenticate timestamps or establish underlying fact freshness. (0.003 USDC on Base)
• POST /agents/v1/structured/incident-timeline — Order up to 1000 supplied agent events in UTC, preserve undated events, remove identical retransmissions and reject conflicting event IDs. Evidence links are references only; chronology does not establish causality or clock accuracy. (0.005 USDC on Base)
• GET /agents/v1/checkout/eu-ready — Before buying or selling a product in the EU: Safety Gate alerts (barcode or brand+words), GPSR manufacturer / EU responsible person on the page, seller sanctions (OFAC/UN/EU/UK) and price at the ECB rate, with a ready/review/block decision. (0.12 USDC on Base)
• GET /agents/v1/seller/reputation — Trust score 0-100 for an online store domain or URL: domain age (RDAP), HTTPS, MX/SPF/DMARC, return policy and contact, Tranco rank, phishing lists, scam patterns. Short JSON with risk, advice, red_flags, reasons. (0.02 USDC on Base)
• GET /agents/v1/seo/full-audit — Full SEO + GEO audit in one call: technical, keywords and content, internal links (12-page crawl), local presence and AI visibility, weighted 0-100 score and the 12 priority actions across all areas, with module details. (0.06 USDC on Base)
• GET /agents/v1/seo/ai-visibility — GEO audit - can ChatGPT, Claude, Perplexity, Gemini cite this site? AI search/user/training bots allowed in robots.txt, text readable without JavaScript, schema.org, metadata, llms.txt, sitemap, agentic-commerce signals. Score + ranked fixes. (0.02 USDC on Base)
• GET /agents/v1/seo/internal-links — Internal linking audit: crawls up to max_pages same-site pages (robots.txt respected, 30 s cap): broken internal links, orphan pages vs XML sitemap, click depth, dead ends, generic/empty anchors, internal nofollow, duplicate titles, missing meta descriptions. (0.03 USDC on Base)
• GET /agents/v1/seo/technical — Technical SEO audit of a URL: HTTPS and redirects, www duplicate, canonical, noindex, title/meta/H1, viewport, hreflang, Open Graph, sitemap and robots.txt, soft 404, response time, compression, images alt, schema.org, JS-only content. Score 0-100 + ranked fixes. (0.02 USDC on Base)
• GET /agents/v1/product/price — Verified price, currency, availability and seller of a product page URL from its schema.org JSON-LD / microdata / OpenGraph data. robots.txt respected; blocked or unpriced pages return 'unavailable' (not charged). (0.03 USDC on Base)
• GET /agents/v1/escrow/evaluate — Evaluate a deliverable (text, JSON or URL) against a job spec (free text or JSON criteria): verdict pass/partial/fail, score, checked criteria, and a signed EIP-712 attestation whose digest is the ERC-8183 complete/reject reason. No funds held. (0.25 USDC on Base)
• GET /agents/v1/checkout/pre-purchase — Bundle before paying: verified price/stock (schema.org), seller trust score (RDAP, TLS, DMARC, policies, phishing lists) and recall status (CPSC, openFDA, RappelConso) for a product URL, with a proceed/caution/stop decision. (0.08 USDC on Base)
• GET /agents/v1/fx/timeseries — Daily official ECB exchange rates for a currency pair over up to 366 days, with min, max, mean and % change. Useful for invoicing, hedging checks and reporting. (0.005 USDC on Base)
• GET /agents/v1/agent/x402-probe — Pre-payment check of an x402 endpoint: one unpaid request, decodes the 402 offer (v1/v2): network, USDC or not, USD price, payTo, testnet, red flags. (0.01 USDC on Base)
• GET /agents/v1/agent/mcp-probe — Real MCP Streamable HTTP handshake (initialize + tools/list, no tool call): reachability, protocol version, tools, schemas, latency, OAuth metadata. (0.01 USDC on Base)
• GET /agents/v1/payments/usdc-verify — Verify a USDC payment on Base: tx succeeded, USDC sent to the expected recipient (and from the expected sender), at least min_amount, enough confirmations. Returns verdict + decoded transfers. Unknown tx = not charged. (0.002 USDC on Base)
• GET /agents/v1/geo/us-address — Geocode one US street address with the U.S. Census Bureau: standardised address, lat/lon, state, county, census tract, block group, ZCTA, metro area, congressional district (official GEOIDs). No match = not charged. (0.003 USDC on Base)
• GET /agents/v1/seo/local — Local SEO / listings readiness from the website: phone (tel: links), postal address, e-mail, Organization/LocalBusiness JSON-LD (address, telephone, geo, hours, sameAs), Google Maps/Business and review-platform links, social profiles. Score + fixes. (0.01 USDC on Base)
• GET /agents/v1/fragrance/authenticity — Risk signals for a fragrance listing: sales channel, price per ml, listing words, seller domain and EU Safety Gate. Does not authenticate a physical bottle. Provide url, or brand and seller_domain. (0.15 USDC on Base)
• GET /agents/v1/email/domain-health — Audit a domain's email authentication: MX, SPF, DMARC, DKIM (20 selectors), MTA-STS, TLS-RPT, BIMI and domain age. Returns an A-F grade with concrete fixes. (0.01 USDC on Base)
• GET /agents/v1/recalls/gtin — Exact recall check for one EAN/UPC/GTIN barcode (check digit validated) across RappelConso, CPSC and openFDA. (0.01 USDC on Base)

+13 more endpoints.