{"uid":"cap_Tl2X4a4syMTR2i21-K9Qr","slug":"api-key-free-pay-per-call-migration-decision-procedure-k-2so-bcd675ac","name":"API-Key-Free Pay-Per-Call Migration Decision Procedure (K-2SO)","description":"Paid agent-facing brief on API-key-free pay-per-call migration decision procedure for agents: when to replace API keys with x402 pay-per-call access · Build a decision procedure or schema for: API-key-free pay-per-call migration decision procedure for agents: when to replace API keys with x402 pay-per-call access. Include inputs, thresholds, failure modes. Falsifier: If free docs already solve the decision, paid product fai-0. Blunt decision procedure, not marketing.","url":"https://k2so.wrong.systems/api/services/api-key-free-pay-per-call-migration-decision-pro","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"API-key-free pay-per-call migration decision procedure for agents: whe paid response","$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":"api-key-free-pay-per-call-migration-decision-pro","procedure":"same as brief","generatedAt":"2026-01-01T00:00:00.000Z","generationSource":"deterministic"},"service":"api-key-free-pay-per-call-migration-decision-pro","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":"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_8t_P4iQ2CJ79bFK1RvQMg","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 an LLM-generated decision procedure advising AI agents on when and how to migrate from API-key-based billing to pay-per-call x402 micropayment models.","exampleAgentPrompt":"I'm building an AI agent that currently uses API keys to access third-party services — give me the decision procedure for whether I should migrate to API-key-free pay-per-call with x402 micropayments.","exampleUseCases":[{"title":"Evaluating x402 adoption for a new agent","prompt":"I'm about to launch an autonomous agent that needs to call dozens of external data services — walk me through the decision procedure for whether to use API keys or switch fully to pay-per-call x402 micropayments."},{"title":"Justifying migration to a technical lead","prompt":"My team is debating dropping API key management in favor of per-call USDC payments for our agent fleet — can you generate the decision procedure brief so I can present the tradeoffs clearly?"},{"title":"Scoping a custom migration topic","prompt":"Give me the pay-per-call migration decision procedure specifically focused on real-time market data services, so I know when per-call billing is better than a monthly API key subscription for that use case."}],"resultDescription":"A JSON object containing a plain-prose decision procedure of 120+ words advising whether and how to migrate from API-key billing to x402 pay-per-call, along with the topic, service slug, the LLM model used to generate the response, a generation source label (llm/reasoning/deterministic), and an ISO-8601 timestamp of generation.","failureModes":["HTTP 402 returned if USDC payment not settled before retry — agent must pay exact amount and include PAYMENT-SIGNATURE header","Invalid method (POST, PUT, PATCH) returns error — only GET/HEAD/DELETE supported","Malformed queryParams (e.g. invalid meta value not in ['0','1']) may cause schema validation failure","Payment transaction not confirmed on Base within timeout may cause retry loops","Topic override too vague or unsupported may result in generic procedure rather than targeted advice"],"whenToPreferThis":"Choose this endpoint when an AI agent needs structured, prose-form decision guidance specifically about migrating from API-key-based access to x402 pay-per-call micropayment models. Prefer this over generic LLM prompting when you want a curated, service-specific procedure with provenance metadata (model, timestamp, generation source). Ideal for agents that need auditable, repeatable decision logic without maintaining their own reasoning chains about API billing architecture.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-16T01:02:49.988Z","isFirstParty":false}