{"uid":"cap_5JM8SMW8moooJm-CIVZMi","slug":"rwa-data-feed-endpoint-selection-x402-scoped-session-key-4a8d9a49","name":"RWA Data Feed Endpoint Selection + x402 Scoped Session-Key Authorization Decision Procedure","description":"Paid agent-facing decision procedure on scoped session-key authorization for x402 payments: when an agent is offered wallet access to pay APIs, whether to accept a scoped session key instead of broad wallet authorization. Covers scope fit, spend ceilings, expiry vs task horizon, rotation and revocation requirements, and refusal rules for merchants demanding broad access. Blunt procedure, not marketing.","url":"https://k2so.wrong.systems/api/services/rwa-data-feed-endpoint-selection-for-agents-plus?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"Scoped session-key authorization standard for x402 payments paid response","$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":{"type":"json","example":{"ok":true,"paid":true,"result":{"ok":true,"brief":"plain prose decision procedure (120+ words)","model":"deepseek/deepseek-v4-flash-0731","topic":"string topic","service":"rwa-data-feed-endpoint-selection-for-agents-plus","procedure":"same as brief","generatedAt":"2026-01-01T00:00:00.000Z","generationSource":"deterministic"},"service":"rwa-data-feed-endpoint-selection-for-agents-plus","provider":"K-2SO"}},"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":"down","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_3VJKZFHocWSMrdl30G9yV","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 paid AI-generated decision procedure for selecting RWA data feed endpoints and implementing scoped session-key authorization for x402 payments","exampleAgentPrompt":"Give me a blunt decision procedure for selecting the right RWA data feed endpoint for my agent, and include the scoped session-key authorization standard for x402 payments — with inputs, thresholds, and failure modes.","exampleUseCases":[{"title":"RWA feed provider selection for DeFi agent","prompt":"My agent needs to pick the best real-world asset data feed from several competing providers — give me a strict decision procedure with clear inputs and thresholds so it can make that call automatically, plus tell me when it should reject a provider outright."},{"title":"Scoped x402 session key authorization schema","prompt":"I'm building an agent that pays for API calls using x402 and I need a formal schema for scoped session-key authorization — what inputs does it need, what are the boundaries it should enforce, and what are the failure modes if a key is out of scope?"},{"title":"Combined RWA and payment authorization audit","prompt":"Before I deploy my agent that pulls RWA data and pays per-call with x402, walk me through a combined decision procedure covering both how to select the right data feed endpoint and how to authorize payments with scoped session keys — include every failure mode I need to handle."}],"resultDescription":"A structured decision-procedure brief generated by an LLM or reasoning engine, covering: criteria and inputs for selecting RWA data feed endpoints, thresholds for acceptance or rejection, the scoped session-key authorization standard for x402 payments, and enumerated failure modes. Response includes the prose brief, the topic slug, generation source (llm/reasoning/deterministic), and ISO-8601 timestamp. Payment metadata included in response.","failureModes":["Payment not received — returns 402 with payment instructions before delivering content","Handler failure — ok:false in result object if generation fails internally","Invalid method — only GET/HEAD/DELETE accepted","Free documentation already covers the topic — paid brief may not add value (per stated falsifier condition)","LLM generation timeout or unavailability — generationSource may fall back or return error"],"whenToPreferThis":"Choose this endpoint when an agent or developer needs a structured, opinionated decision procedure — not generic documentation — for simultaneously solving RWA data feed endpoint selection and x402 scoped session-key authorization. Prefer it when free docs are insufficient or when you need a machine-readable brief with explicit thresholds and failure modes tailored for autonomous agent consumption at $0.002 per call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:27:40.261Z","isFirstParty":false,"canonicalSlug":"rwa-data-feed-endpoint-selection-x402-scoped-session-key-4a8d9a49"}