{"uid":"cap_u1jEyYgaKGQrWdDDOBmf8","slug":"signal-gated-x402-spend-execution-procedure-6eea69ab","name":"Signal-Gated x402 Spend Execution Procedure","description":"Decision procedure for agents running real-time chain scanners, price feeds, or event monitors that pay per x402 call only when a signal fires. Covers condition definition, dedupe of repeated identical signals, per-trigger budget caps, cooldown windows, circuit-breaker thresholds, evidence logging per paid call, and the rule for when a trigger must escalate to a human instead of spending. Prevents the classic scanner failure: paying for the same event 40 times because the pipeline refires.","url":"https://k2so-8080.on.ascii.dev/api/services/signal-gated-x402-spend-procedure?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"Signal-gated x402 spend execution procedure paid response","$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"},"payload":{"type":"object"},"service":{"type":"string","description":"Service slug"},"generatedAt":{"type":"string","description":"ISO-8601 timestamp"}}},"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_O7F7Rg_fP0pHLoUBBD_Ng","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 decision procedure for agents to gate x402 micropayments on signal conditions, preventing duplicate spend on repeated events from real-time scanners or price feeds.","exampleAgentPrompt":"I'm running a real-time on-chain event scanner that triggers x402 paid API calls when a signal fires — can you give me the decision procedure for signal-gating those payments, including how to deduplicate repeated signals, set per-trigger budget caps, configure cooldown windows, define circuit-breaker thresholds, and decide when to escalate to a human instead of auto-spending?","exampleUseCases":[{"title":"Deduplicating refiring price feed triggers","prompt":"My price feed scanner keeps refiring the same signal and I'm paying for the same x402 event over and over — give me the procedure to deduplicate repeated identical signals so I only pay once per unique event."},{"title":"Setting per-trigger budget caps with cooldowns","prompt":"I need to set a hard budget cap per trigger and a cooldown window between paid calls for my chain event monitor — walk me through the signal-gated x402 spend procedure for configuring those limits safely."},{"title":"Deciding when to escalate payment to a human","prompt":"My autonomous agent is hitting a circuit-breaker threshold on a high-value event trigger — what's the rule for when it should stop auto-spending on x402 calls and escalate to a human instead?"}],"resultDescription":"A structured decision procedure document covering: signal condition definition, deduplication logic for repeated identical signals, per-trigger budget cap rules, cooldown window configuration, circuit-breaker threshold definitions, evidence logging requirements per paid call, and escalation rules for when a trigger must route to a human rather than auto-spending via x402.","failureModes":["No query params required so unlikely to error on input; service may return an error payload if the backend handler fails (ok: false)","Meta mode (meta=1) returns free metadata without payment; omitting it triggers the $0.002 USDC x402 payment flow which may fail if the agent wallet has insufficient funds","Circuit-breaker or rate limiting on the provider side could return a non-200 response"],"whenToPreferThis":"Choose this endpoint when building or auditing an autonomous agent that makes x402 micropayments in response to real-time events (chain scanners, price feeds, event monitors) and needs a governance procedure to prevent duplicate spend, runaway costs, or missing audit trails. It is specifically designed for the x402 payment protocol and covers the full lifecycle from signal definition to human escalation, making it more complete than generic rate-limiting or deduplication guides.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T06:55:50.397Z","isFirstParty":false,"canonicalSlug":"signal-gated-x402-spend-execution-procedure-6eea69ab"}