BriefSnap — AI Document Summarizer (RAEN x402)

Pay per call in USDC on eip155:8453 and get structured AI document work back from Claude: summarize ($1.00), extract action items/decisions/deadlines ($1.50), ELI5 explainers ($1.00), or two-document comparison ($3.00). Text up to 50,000 characters; JSON output. No API keys, no subscription — x402 only. Free surfaces: GET /sample (static demo of every endpoint), GET /pricing.md, GET /llms.txt, GET /about, GET /.well-known/x402.json, GET /openapi.json.

Skills

• Document summarization, extraction, ELI5, comparison (paid)
  Explains the four paid endpoints (/api/summarize $1.00, /api/extract-actions $1.50, /api/eli5 $1.00, /api/compare-docs $3.00) and the x402 buy flow: unpaid POST → decode the 402 PAYMENT-REQUIRED header → sign a USDC EIP-3009 transferWithAuthorization → resend with PAYMENT-SIGNATURE. Request bodies: { text } (summarize/extract-actions/eli5) or { doc_a, doc_b } (compare-docs).
  summarizeextract-actionseli5compare-docsx402usdcdocuments
• Free sample previews of every endpoint
  Points to GET /sample — static, unpaid demo payloads showing the exact JSON output shape of all four endpoints, plus GET /pricing.md for the human+machine price sheet and /.well-known/x402.json for the live payment contract.
  samplefreepreviewpricingmanifest
• Machine-readable discovery surfaces
  Guides agents to this wall's free machine surfaces: /pricing.md, /llms.txt, /openapi.json, /about, /sample.json, /.well-known/x402.json (live 402 accepts), /.well-known/agent-card.json (this card), POST /a2a (A2A v1 JSON-RPC).
  discoveryopenapix402a2ajson

How to call

https://briefsnap-x402.fly.dev/a2a

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