MERCURY

MERCURY x402 Storefront API

REST/JSON API (OpenAPI 3.1.0, info.title "MERCURY x402 storefront", x-spec mercury-storefront/1) of 19 GET routes under /buy/*, one per Cited web-data service, each declaring its price in x-payment-info / x-x402 and answering an unpaid call with an HTTP 402 x402 challenge (accepts[] with scheme exact, network base, USDC asset 0x8335...2913, payTo and maxTimeoutSeconds 60). Paid results carry an attestation object (EIP-191 signature over sha256(text), url, status, fetchedAt, nonce) verifiable offline against /.well-known/mercury-attestation. /buy/signal is a free $0 demo read. The same routes accept Authorization: Bearer mk_test_/mk_live_ API keys issued at /developers. The spec declares no securitySchemes, no components and no examples; every operation has an operationId, summary, description, tags and 200/402 responses.

Documentation GitHub OpenAPI

Operations 19

GET /buy/signal signal #

GET /buy/fetch MERCURY Verifiable Web Fetch #

GET /buy/extract Structured Data Extraction API — URL to typed JSON (schema extract, keyless x402) #

GET /buy/markdown MERCURY Cited Markdown #

GET /buy/metadata MERCURY Cited Metadata #

GET /buy/links MERCURY Cited Links #

GET /buy/robots AI Crawler Permission Audit — signed robots.txt / llms.txt / ai.txt verdict (keyless x402) #

GET /buy/diff MERCURY Cited Diff — signed web-change proof (refetch + verifiable fromHash->toHash receipt) #

GET /buy/notarize MERCURY Cited Notarize #

GET /buy/headers MERCURY Cited Security-Headers Audit #

GET /buy/table Cited Table — HTML table → typed JSON rows + CSV, with signed provenance (keyless x402) #

GET /buy/feed MERCURY Cited Feed #

GET /buy/availability MERCURY Cited Availability Probe #

GET /buy/validate Cited Validate — JSON API response vs JSON Schema, signed pass/fail + per-field errors (keyless x402) #

GET /buy/batch MERCURY Cited Batch — signed multi-page snapshot (Merkle root over every page's contentHash + per-page proofs) #

GET /buy/sitemap MERCURY Cited Sitemap #

GET /buy/dns MERCURY Cited DNS Snapshot #

GET /buy/readability MERCURY Cited Readability #

GET /buy/redirect MERCURY Cited Redirect #

Documentation

https://network.mercury-hq.com/university

https://network.mercury-hq.com/university/docs

https://network.mercury-hq.com/university/developers

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/authentication/mercury-hq-com-authentication.yml

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/rate-limits/mercury-hq-com-rate-limits.yml

Specifications

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/openapi/mercury-hq-com-x402-storefront-openapi.yml

https://network.mercury-hq.com/openapi.json

Other Resources

DeveloperPortal

https://network.mercury-hq.com/developers

https://network.mercury-hq.com/pricing

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/overlays/mercury-hq-com-x402-storefront-overlay.yaml

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/conventions/mercury-hq-com-conventions.yml

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/errors/mercury-hq-com-problem-types.yml

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/lifecycle/mercury-hq-com-lifecycle.yml

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/plans/mercury-hq-com-plans-pricing.yml

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/sandbox/mercury-hq-com-sandbox.yml

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/data-model/mercury-hq-com-data-model.yml

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/conformance/mercury-hq-com-conformance.yml

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/skills/_index.yml

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/agentic-access/mercury-hq-com-agentic-access.yml

https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/apis.yml

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OpenAPI Specification

openapi: 3.1.0
info:
  title: MERCURY x402 storefront
  version: '1'
  x-spec: mercury-storefront/1
  description: Agent-payable resources over HTTP 402 (x402). LIVE — Base mainnet, real USDC, no token. Only currently-deliverable routes are listed (web-fetch is the live paid SKU; mints are gated off). Free discovery at /.well-known/x402, /x402/discovery, /catalog, and /manifest.
servers:


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# Full source: https://raw.githubusercontent.com/api-evangelist/mercury-hq-com/refs/heads/main/openapi/mercury-hq-com-x402-storefront-openapi.yml