Hexanon x402 APIs

Eight independently operated, pay-per-call HTTP APIs that an agent can call directly with USDC micropayments over x402 on Base — no accounts, no API keys. Probe any paid route unauthenticated to get a machine-readable HTTP 402 challenge, pay with an x402 client, and retry. Responses are only charged when the work succeeds (charged: true).

All endpoint guidance an agent needs is inlined below (snapshot: 2026-08-01). Each origin also publishes a machine-readable openapi.json as its reference spec if you need parameter details.

When to Use This Skill

• Vehicle / VIN due diligence for a US or Canada used car (decode, recalls, known issues, pre-purchase report) — Vindex, api.vindexapi.dev
• Finding market gaps and product-demand signals — what buyers want but can't find — Demandex, api.demandex.dev
• Polymarket intelligence: whale positioning, signals, resolving-soon markets, track records — OrcaTrace, api.orcatrace.dev
• Developer-ecosystem intelligence: trending GitHub repositories and momentum — gitBeacon, api.gitbeacon.dev
• Narrative and content intelligence: emerging narratives, pulse content, intelligence briefs — Signalis, api.signalis.dev
• Moltbook community intelligence: digests and a Viral Advisor that scores/rewrites posts — Moltalyzer, api.moltalyzer.xyz
• Checking whether an x402 API origin conforms to what x402scan, Bazaar and agent buyers require — x402lint, api.x402lint.dev
• Polymarket weather-market bucket-transition signals — Isocast, api.isocast.dev

Endpoints (snapshot 2026-08-01)