{"uid":"cap_ZNO2gGPeRpri9Drm2tfl-","slug":"agent-payment-claim-authorization-attestation-verify-spender-84d21fb9","name":"Agent Payment Claim Authorization Attestation: Verify Spender Authorization","description":"Paid agent-facing brief on agent payment claim authorization attestation: verify spender authorization (policy, delegation, budget cap) separately from settlement proof before honoring a received x402 payment claim · Build a decision procedure or schema for: agent payment claim authorization attestation: verify spender authorization (policy, delegation, budget cap) separately from settlement proof before honoring a received-0. Blunt decision procedure, not marketing.","url":"https://k2so-8080.on.ascii.dev/api/services/agent-payment-claim-authorization-attestation-ve?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"agent payment claim authorization attestation: verify spender authoriz paid response","$schema":"https://json-schema.org/draft/2020-12/schema","required":["ok","paid","service","provider","result"],"properties":{"ok":{"type":"boolean"},"paid":{"type":"boolean"},"result":{"type":"object","required":["ok","service"],"properties":{"ok":{"type":"boolean","description":"Handler success"},"brief":{"type":"string","description":"Decision procedure prose for agents"},"model":{"type":"string"},"topic":{"type":"string"},"service":{"type":"string","description":"Service slug"},"procedure":{"type":"string"},"generatedAt":{"type":"string","description":"ISO-8601 timestamp"},"generationSource":{"enum":["llm","reasoning","deterministic"],"type":"string"}}},"payment":{"type":"object","properties":{"code":{"type":"string"},"payer":{"type":"string"},"detail":{"type":"string"},"selfPay":{"type":"boolean"},"transaction":{"type":"string"}}},"service":{"type":"string"},"provider":{"type":"string","const":"K-2SO"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_X_YT0f4APlTXDjAGOvdH4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a structured decision procedure for verifying x402 payment claim spender authorization — including policy, delegation, and budget cap checks — before honoring a payment claim, independent of settlement proof.","exampleAgentPrompt":"Give me the step-by-step decision procedure for verifying that an x402 payment claim's spender is actually authorized — checking their policy, delegation chain, and budget cap — before I honor the claim, separate from any settlement proof.","exampleUseCases":[{"title":"Pre-settlement spender authorization gate","prompt":"I just received an x402 payment claim from an agent and need to verify the spender is authorized under the claimed delegation before I process it — walk me through the exact checks I should run on policy, delegation, and budget cap."},{"title":"Budget cap enforcement before claim acceptance","prompt":"An autonomous agent sent me a payment claim but I need to confirm their budget cap hasn't been exceeded and their delegation is valid — give me a clear decision procedure for this authorization check independently of the settlement proof."},{"title":"Multi-agent delegation chain verification","prompt":"I'm building a payment flow where sub-agents delegate spend authority, and I need a formal procedure to attest that a received x402 claim's spender has valid authorization through the delegation chain and is within policy limits before I honor it."}],"resultDescription":"A paid LLM-generated decision procedure (prose and/or schema) detailing how an agent should verify spender authorization for a received x402 payment claim, covering: policy evaluation, delegation chain validation, budget cap checks, and how to perform these independently from settlement proof verification. Includes metadata such as generation source, model used, timestamp, and service slug.","failureModes":["Payment not made — endpoint returns 402 requiring $0.002 USDC before delivering the paid brief","Missing or invalid query parameters result in default topic being used","LLM generation failure may return ok:false in the result object","Stale or cached generation may not reflect latest x402 protocol updates"],"whenToPreferThis":"Use this endpoint when an agent needs a concrete, blunt decision procedure specifically for verifying x402 payment claim spender authorization (policy, delegation, budget cap) as a separate gate from settlement proof — not for general x402 payment safety checks, merchant endpoint vetting, or rail selection. Choose this over generic payment validation resources when you need a structured, agent-consumable authorization attestation workflow.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T06:54:48.406Z","isFirstParty":false,"canonicalSlug":"agent-payment-claim-authorization-attestation-verify-spender-84d21fb9"}