{"uid":"cap__P9rldl9acJmDyF4-FmTw","slug":"astranl-spend-fuse-budget-audit-spending-verdict-5281f6d5","name":"AstraNL Spend Fuse – Budget Audit & Spending Verdict","description":"The Crossing moves look, claim, release, mark and check are free and need no account. The other paths are paid per call over x402, USDC on Base. Operator AstraNL, KvK 88449335.","url":"https://verify.astranl.com/v1/spend-fuse?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","required":["amount_usd"],"properties":{"intent_id":{"type":"string","description":"stable id of this payment intent; 20 inputs in total, see the protocol"},"amount_usd":{"type":"string","description":"the spend, USD"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"kind":"spend_fuse","result":{"stops":["F5"],"checks":[],"verdict":"STOP"},"receipt":{}}},"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_13UF09MS2cLWh6ieSUdNE","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":"Evaluates a payment intent against spending rules and returns a STOP/PASS verdict indicating whether the spend should be allowed or blocked.","exampleAgentPrompt":"Before I approve this $12.50 payment, run a spend fuse check on intent id 'pi_abc123' to see whether it gets a STOP or PASS verdict.","exampleUseCases":[{"title":"Pre-payment budget guard for AI agent","prompt":"Before my agent pays for that API call, check whether spending $4.00 on intent 'pi_xyz789' is within limits — give me the verdict so I can decide whether to proceed."},{"title":"Automated spend enforcement in agentic workflow","prompt":"I'm building an agent that approves purchases — run a spend fuse audit on intent 'pi_order99' for $25.00 and tell me if it gets a STOP so I can block the transaction automatically."},{"title":"Real-time budget cap verification","prompt":"Check if a $0.50 micro-payment on intent 'pi_micro001' would be stopped or allowed by the spend fuse — I want to make sure my agent isn't exceeding its daily budget."}],"resultDescription":"Returns a JSON object with a 'kind' of 'spend_fuse', a 'result' containing a list of stops (rule codes that triggered), a list of checks performed, and a 'verdict' of either STOP or PASS. A receipt object is also included. Example: {kind:'spend_fuse', result:{stops:['F5'], checks:[], verdict:'STOP'}, receipt:{}}","failureModes":["Missing required 'amount_usd' query parameter returns a validation error","Invalid or malformed intent_id may result in an unrecognized intent response","Paid endpoint — missing x402 payment header results in 402 Payment Required","Unsupported HTTP method (not GET/HEAD/DELETE) returns 405 Method Not Allowed","Amount provided in wrong format (non-string or non-numeric string) causes schema rejection"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, low-cost ($0.002 per call) pre-execution budget gate for agent-initiated payments. It is ideal for autonomous AI agents that need a rule-based STOP/PASS verdict before committing a spend, especially when operating under budget caps or compliance rules. Prefer this over general payment APIs when the goal is audit/verification rather than execution.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:31:37.608Z","isFirstParty":false,"canonicalSlug":"astranl-spend-fuse-budget-audit-spending-verdict-5281f6d5"}