{"uid":"cap_fgr05Osj7l-X9hHhWNu6y","slug":"signal-gated-x402-spend-execution-procedure-df35e98a","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.grok.me/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_MBsSxbl6cuY7LaTS3yYR2","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, with deduplication, budget caps, cooldown windows, circuit-breaker thresholds, and human-escalation rules.","exampleAgentPrompt":"I have a real-time chain scanner that fires x402 paid calls whenever a signal triggers — can you get me the decision procedure for gating those payments on the signal, including how to deduplicate repeated events, set per-trigger budget caps, define cooldown windows, configure circuit-breaker thresholds, and decide when to escalate to a human instead of auto-spending?","exampleUseCases":[{"title":"Deduplicating refiring blockchain scanner","prompt":"My blockchain event pipeline keeps refiring the same log event and I'm paying for it dozens of times — give me the procedure to deduplicate those signals before any x402 spend goes through."},{"title":"Budget-capped price feed agent","prompt":"I'm running a price feed agent that pays per x402 call when prices cross a threshold — walk me through how to set a per-trigger budget cap and a cooldown window so it doesn't blow the budget if prices oscillate rapidly."},{"title":"Human escalation rule for high-value triggers","prompt":"My event monitor sometimes fires on unusual on-chain activity that could mean a large payment — what's the rule for when my agent should stop and escalate to me instead of automatically spending?"}],"resultDescription":"A structured decision procedure document covering: signal condition definition, deduplication logic for repeated identical signals, per-trigger budget caps, cooldown window configuration, circuit-breaker threshold rules, evidence logging requirements per paid call, and escalation criteria for routing spend decisions to a human operator.","failureModes":["Endpoint returns a generic or empty payload if the service backend is unavailable","Payment of $0.002 USDC is deducted even if the returned procedure is incomplete","If the x402 payment header is malformed or the wallet has insufficient funds, the call is rejected before procedure delivery","Pipeline misconfiguration by the caller (e.g. ignoring cooldown rules) is not caught by the procedure itself"],"whenToPreferThis":"Choose this endpoint when building or debugging agents that run real-time scanners, price feeds, or event monitors and need a governed, cost-controlled approach to per-signal x402 spending. It is specifically designed to solve the pipeline-refire overspend problem and provides the full set of operational guardrails (deduplication, budget caps, cooldowns, circuit breakers, escalation) in a single retrievable procedure. Prefer it over generic payment decision procedures when the trigger is a real-time signal rather than a user-initiated action.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T06:39:55.885Z","isFirstParty":false,"canonicalSlug":"signal-gated-x402-spend-execution-procedure-df35e98a"}