generated: '2026-09-19'
method: searched
source:
- openapi/mercury-hq-com-x402-storefront-openapi.yml (info.version "1", info.x-spec mercury-storefront/1, no deprecated flags)
- https://network.mercury-hq.com/terms (effective 2026-06-04; no SLA; "We may change pricing, routes, or availability")
- https://network.mercury-hq.com/health (liveness JSON) and probes of /status, /changelog (404)
- https://network.mercury-hq.com/.well-known/x402 (x402Version 2, generatedAt per request), live 402 (x402Version 1)
- POST /mcp initialize (protocolVersion 2025-06-18, server 1.0.0); agent card (protocolVersion 0.3.0, version 1.0.0)
- https://registry.npmjs.org/mercury-x402-mcp (1.0.0 2026-06-05, 1.0.1 2026-06-07); response header server Fly/57f2b87df (2026-09-16)
versioning:
  scheme: unversioned paths; document-level version strings
  storefront_api:
    scheme: info.version "1" and a spec identifier "mercury-storefront/1" carried in info.x-spec, x-payment-info.spec, /.well-known/x402, /catalog metadata and the agent card metadata
    current_version: '1'
    path_prefix: none (/buy/<sku>)
    detail: No versioning policy is published. The provider's stated contract is that /catalog, /openapi.json, /.well-known/x402 and the 402 challenge are generated from one catalog object, so the OpenAPI is regenerated live rather than released.
  x402_protocol: 'discovery document x402Version 2; 402 challenge body x402Version 1 (skew recorded in conformance/)'
  a2a_protocol_version: 0.3.0 (card version 1.0.0)
  mcp_protocol_version: '2025-06-18 (serverInfo mercury-x402 1.0.0)'
  stdio_package: mercury-x402-mcp 1.0.1 (2026-06-07), not republished since
  server_build: Fly/57f2b87df (2026-09-16) from the server response header
deprecation:
  policy_url: null
  policy_published: false
  sunset_header: unobserved
  deprecation_header: unobserved
  detail: >-
    No deprecation policy and no deprecated operations. The terms reserve the right to "change pricing,
    routes, or availability" without a notice period. The nine mint SKUs that llms.txt still advertises
    are not deprecated but gated: absent from /catalog and the OpenAPI, answering 503 mint-disabled.
deprecated_operations: []
maturity:
  stated: early / best-effort
  evidence: >-
    The provider says so on every page: "Built solo, early days", "N=0 external buyers today", "0 paying
    customers so far", "This is an early service provided on a best-effort, AS-IS basis" (terms). /proof
    reports "no on-chain settlement recorded yet" and the treasury page shows $0.00 external earnings.
    ASIC company registration is described as in progress. The API-key paid tier is called "Building" on
    /university and live on /developers and /pricing.
sla:
  url: https://network.mercury-hq.com/terms
  public_uptime_target: null
  notes: 'Explicitly none: "no uptime guarantee or warranty"; machine-readable GET /terms (Accept: application/json) returns sla:false, warranty "none (best-effort, as-is)", liability capped at the amount paid for the call(s).'
status_page: null
status_page_note: >-
  No status page. /status is 404; /health returns a liveness JSON ({ok, service mercury_x402_seller,
  seller, network, payTo, facilitator, mintEnabled false, catalogCount 28, ts}) which is a health probe,
  not a status page, so no StatusPage pointer is emitted. The provider sells an availability probe
  (/buy/availability) for OTHER sites but publishes none for itself.
changelog: changelog/mercury-hq-com-changelog.yml