{"uid":"cap_msBcOcPas6bqt_XwH3wc7","slug":"geekvault-json-validate-5b8175d9","name":"GeekVault JSON Validate","description":"Network, docs, image, web, and dev utility tools paid per call via x402. No signup, no API keys, no subscriptions — just USDC on Base.","url":"https://api.geekvault.dev/dev-tools/v1/json-validate?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"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_7kzV-6NdD9sgzXYfFV5tS","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":"Validates a JSON string or object for correctness and well-formedness, returning validation status and error details","exampleAgentPrompt":"Can you check if this JSON is valid: {\"name\": \"Alice\", \"age\": 30, \"active\": true} — and tell me if there are any syntax errors?","exampleUseCases":[{"title":"Validate LLM-generated JSON output","prompt":"I just got this JSON back from a language model and I'm not sure it's well-formed — can you validate it before I try to parse it? Here it is: {\"items\": [{\"id\": 1, \"label\": \"foo\"}, {\"id\": 2 \"label\": \"bar\"}]}"},{"title":"Debug malformed API payload","prompt":"My API call keeps failing and I think the JSON body might be broken. Can you validate this payload and tell me exactly where the syntax error is: {\"user\": {\"name\": \"Bob\", \"email\": \"bob@example.com\", \"roles\": [\"admin\", \"editor\"}]}"},{"title":"Pre-flight check before database insert","prompt":"Before I store this config JSON in the database, can you make sure it's valid and well-formed? Here's the string: {\"timeout\": 30, \"retries\": 3, \"endpoints\": [\"https://api.example.com\", \"https://backup.example.com\"]}"}],"resultDescription":"Returns a validation result indicating whether the provided JSON is valid, along with detailed error messages and location information (line, column, or character offset) for any syntax errors found.","failureModes":["Empty or missing input body — returns error indicating no JSON was provided","Input exceeds size limit — returns error for oversized payloads","Non-JSON content type or encoding issues — may cause parsing failure before validation logic runs","Network timeout on rare occasions — retrying the request typically resolves it"],"whenToPreferThis":"Choose this endpoint when you need a fast, pay-per-call JSON validation check with no setup overhead — no API keys or subscriptions required. Ideal for AI agents that need to verify dynamically generated or user-supplied JSON before further processing, and for one-off validation tasks where a dedicated SDK or library is not available in the runtime environment.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T07:43:16.477Z","isFirstParty":false,"canonicalSlug":"geekvault-json-validate-5b8175d9"}