obolpay-x402-gateway

Deterministic service agent for this x402 paid-data gateway. Offers FREE discovery, preview, balance lookup and receipt verification only — it is not a conversational AI. PURCHASE happens exclusively via the x402 HTTP 402 flow at https://x402.obolpay.xyz/api/v1/protected-data, never through A2A.

Skills

• Catalog discovery (free)
  Return this x402 gateway's machine-readable manifest: price, token, network, recipient, payment flow, capabilities. Same document as GET /.well-known/x402. No payment required. Purchase happens exclusively OUT-OF-BAND via the x402 HTTP 402 flow at https://x402.obolpay.xyz/api/v1/protected-data — never through A2A messages.
  freekeylessdiscoveryx402
• Free preview of the paid dataset
  Free preview of the paid dataset so you can evaluate BEFORE paying (trustless). Optionally pass a data part {"skill":"preview","args":{"types":["…"]}} to scope the preview to the categories you would actually buy. No invoice is created. Purchase happens exclusively OUT-OF-BAND via the x402 HTTP 402 flow at https://x402.obolpay.xyz/api/v1/protected-data — never through A2A messages.
  freekeylesspreviewx402
• Prepaid balance lookup (free)
  Look up a prepaid gasless balance for an address passed as {"skill":"balance","args":{"address":"0x…"}}: balance_units, calls_remaining, next_nonce and the voucher message to sign. Read-only; signing happens on YOUR side with YOUR key — this server never asks for a private key. Purchase happens exclusively OUT-OF-BAND via the x402 HTTP 402 flow at https://x402.obolpay.xyz/api/v1/protected-data — never through A2A messages.
  freekeylessprepaidx402
• Verify a proof-of-purchase receipt (free)
  Verify a signed purchase receipt issued by this gateway, passed as {"skill":"verify_receipt","args":{"message":"…","signature":"0x…"}}: recovers the EIP-191 signer and checks it equals the server's receipt signer. Anyone can verify — no payment required. Purchase happens exclusively OUT-OF-BAND via the x402 HTTP 402 flow at https://x402.obolpay.xyz/api/v1/protected-data — never through A2A messages.
  freekeylessreceiptverificationx402

How to call

https://x402.obolpay.xyz/a2a

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