{"uid":"cap_KVDw5fZSq9NhR4lp9FwC8","slug":"thoughtproof-verification-check-a2a86403","name":"ThoughtProof Verification Check","description":"ThoughtProof — Verification infrastructure for autonomous AI. Three products: Sentinel, PLV, and Reasoning Verification. Pay per call, no minimums.","url":"https://api.thoughtproof.ai/v1/check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["claim"],"properties":{"claim":{"type":"string","description":"The decision or reasoning to verify"},"speed":{"enum":["fast","standard","deep"],"type":"string","description":"Verification depth. Pricing: fast=$0.008, standard=$0.02, deep=$0.08 (Base USDC via x402)"},"domain":{"enum":["financial","medical","legal","code","general"],"type":"string"},"agentId":{"type":"string","description":"Optional caller/agent identifier for per-agent verification history (also accepted via X-Agent-Id header; body wins). Powers GET /v1/stats/{agentId} and /v1/trustscore/{agentId}."},"stakeLevel":{"enum":["low","medium","high","critical"],"type":"string"}}},"responseSchema":{"type":"object","properties":{"verdict":{"enum":["ALLOW","BLOCK","UNCERTAIN"],"type":"string"},"confidence":{"type":"number","example":0.82},"durationMs":{"type":"integer"},"objections":{"type":"array","items":{"type":"string"}}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":{"p10Cents":"2.0000","medianCents":"2.0000","p90Cents":"2.0000","minCents":"2.0000","maxCents":"2.0000","p95Cents":"2.0000","sampleCount":1,"varies":false,"failureChargeRate":1},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.08/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.08","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.08","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_NiNp-JHq1jX2NLUue67k5","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.08","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies AI decisions and reasoning claims, returning a verdict of ALLOW, BLOCK, or UNCERTAIN with a confidence score and list of objections","exampleAgentPrompt":"Before you send that trade order, run a deep ThoughtProof verification check on this reasoning: 'The market is oversold and RSI is below 30, so buying now is low-risk' — I want a ALLOW/BLOCK verdict and any objections it finds.","exampleUseCases":null,"resultDescription":"Returns a verdict enum (ALLOW, BLOCK, or UNCERTAIN), a numeric confidence score (0–1), duration in milliseconds, and an array of objection strings explaining any detected flaws or risks in the claim.","failureModes":["Missing required 'claim' field returns 400 Bad Request","Invalid 'speed' value not matching fast/standard/deep returns 400","Payment not included or insufficient USDC via x402 returns 402 Payment Required","Claim too long or malformed returns 422 Unprocessable Entity","Service timeout on deep verification for extremely complex claims","Unknown domain value may degrade verification quality without explicit error"],"whenToPreferThis":"Use this endpoint when an AI agent needs a structured, third-party safety gate on its own decisions or reasoning before taking action — especially in high-stakes autonomous pipelines. Prefer it over simple rule-based filters when you need a calibrated confidence score plus enumerated objections, or when you need per-agent verification history via agentId. Choose 'fast' speed for low-latency pipelines and 'deep' for critical decisions requiring thorough scrutiny.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T18:33:18.107Z","isFirstParty":false,"canonicalSlug":"thoughtproof-verification-check-a2a86403"}