{"uid":"cap_2PRzVp7hFGoyORfKgNZEA","slug":"signal-gated-x402-spend-execution-procedure-0991ede8","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.wrong.systems/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":{"type":"json","example":{"ok":true,"paid":true,"result":{"ok":true,"payload":{"key":"value"},"service":"signal-gated-x402-spend-procedure","generatedAt":"2026-01-01T00:00:00.000Z"},"service":"signal-gated-x402-spend-procedure","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_HhynmURqY1oM5Z16Lim87","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 running event-driven chain scanners or price feeds, covering condition gating, deduplication, per-trigger budget caps, cooldown windows, circuit-breaker thresholds, evidence logging, and human-escalation rules to prevent runaway micropayment spending.","exampleAgentPrompt":"I'm building an on-chain event scanner that pays per x402 call only when a signal fires — can you fetch the signal-gated x402 spend procedure so I know how to handle deduplication, set per-trigger budget caps, configure cooldown windows, and decide when to escalate to a human instead of auto-spending?","exampleUseCases":[{"title":"Deduplicating a refiring price feed","prompt":"My price feed agent keeps triggering the same signal 30+ times and paying for each one — pull the signal-gated x402 spend procedure so I can implement proper deduplication and stop burning budget on repeated identical events."},{"title":"Setting circuit-breaker thresholds for a chain scanner","prompt":"I want my blockchain scanner agent to automatically pause x402 spending if it hits a certain number of paid calls in a short window — fetch the signal-gated x402 procedure so I can configure the right circuit-breaker thresholds and cooldown periods."},{"title":"Deciding when to escalate a spend trigger to a human","prompt":"My autonomous event monitor occasionally encounters high-value signals where auto-spending feels risky — get me the signal-gated x402 spend procedure so I understand exactly which conditions should escalate to a human approver instead of executing the payment automatically."}],"resultDescription":"A structured decision procedure document (JSON payload) covering: signal condition definitions for gating x402 calls, deduplication logic to prevent paying for repeated identical signals, per-trigger budget cap rules, cooldown window specifications between triggers, circuit-breaker thresholds that halt spending after anomalous activity, evidence logging requirements per paid call, and the escalation rule set defining when a trigger must involve a human rather than auto-executing a payment.","failureModes":["Payment not included or invalid: returns 402 with payment instructions","Service unavailable on k2so.wrong.systems: network or host error","Malformed query parameters: unexpected enum value for meta param returns validation error","Empty or null payload: handler may return ok=true but with no procedure content if service is misconfigured"],"whenToPreferThis":"Choose this endpoint when building an autonomous agent that makes x402 micropayments contingent on real-time signals (on-chain events, price thresholds, event monitors) and you need a structured, vetted decision framework — not just ad-hoc logic — for deduplication, budget governance, circuit-breaking, and human escalation. Prefer it over rolling your own logic when the cost of runaway payments (the 'pay 40 times for the same event' failure mode) is a real risk in your pipeline.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T14:28:42.298Z","isFirstParty":false,"canonicalSlug":"signal-gated-x402-spend-execution-procedure-0991ede8"}