{"uid":"cap_VfrFSA4J4qykn9FJjgvQ8","slug":"json-schema-drift-detection-85335a58","name":"JSON Schema Drift Detection","description":"Deterministic JSON repair and JSON Schema validation for AI agents. Free MCP, inspect, validate, repair. Paid POST /v1/json/reliable 0.003 USDC via x402 on Base.","url":"https://agent-json-reliability.onrender.com/v1/api/schema-drift?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"example":{"ok":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_fWZ2chTAtGn08yZaxchHP","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Detects schema drift by validating JSON payloads against expected schemas and identifying structural deviations over time","exampleAgentPrompt":"Check if this JSON payload is drifting from my expected schema — the schema requires a 'user_id' string, 'timestamp' ISO date, and 'score' number, but I think some fields might be missing or have changed type in my latest AI agent output.","exampleUseCases":[{"title":"LLM output schema regression check","prompt":"My AI agent generates structured JSON responses, but I think the format has started drifting — can you check this output against my schema and tell me exactly what fields are missing or have the wrong type?"},{"title":"API contract drift monitoring","prompt":"We have a downstream service that expects a specific JSON structure, and I want to verify whether the latest payload we're sending still conforms to the original contract or if something has structurally changed."},{"title":"Data pipeline schema validation","prompt":"Before I load this batch of JSON records into our database, can you validate them against our schema and flag any records where the structure has drifted from what we expect?"}],"resultDescription":"Returns a JSON object indicating whether schema drift was detected, along with details on which fields deviated — including missing fields, type mismatches, unexpected additional properties, or structural changes compared to the expected schema.","failureModes":["Invalid JSON input returns a parse error","Missing schema reference causes validation to fail with schema-not-found error","Malformed JSON Schema provided as baseline returns schema-invalid error","Network timeout on large payloads","Rate limiting or payment required (402) if free tier exceeded"],"whenToPreferThis":"Choose this endpoint when you need deterministic, reliable schema drift detection for AI agent outputs or API payloads — especially when LLM-generated JSON is prone to structural inconsistencies over time and you need a cheap, automated way to catch regressions before they propagate downstream.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-03T00:31:03.402Z","isFirstParty":false,"canonicalSlug":"json-schema-drift-detection-85335a58"}