{"slug":"agent402-tools-api-json-schema-infer-783f0c","title":"Infer a draft-07 JSON Schema from sample JSON document(s)","host":"agent402.tools","method":"POST","resource":"https://agent402.tools/api/json-schema-infer","category":"code","description":"Infer a draft-07 JSON Schema from sample JSON document(s). Send one sample as json, or several as samples. Heuristic merge rules: required = keys present in every sample, conflicting types become a type union, integer widens to number, and string formats (date-time, date, email, uri, uuid) are detec","price_listed":0.001,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":5,"reported_payers_30d":2,"networks":["algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=","eip155:10","eip155:1329","eip155:137","eip155:143","eip155:42161","eip155:42220","eip155:43114","eip155:4663","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","stellar:pubnet"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"json":{"active":true,"age":36,"joined":"1843-10-18","name":"Ada","tags":["pioneer"]}},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"json":{"description":"a sample JSON document (object or JSON string)"},"samples":{"description":"alternative: 1-50 sample documents merged into one schema","type":"array"}}},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"properties":{"samples":{"type":"integer"},"schema":{"properties":{"$schema":{"type":"string"},"properties":{"properties":{"age":{"properties":{"type":{"type":"string"}},"type":"object"},"name":{"properties":{"type":{"type":"string"}},"type":"object"}},"type":"object"},"required":{"items":{"type":"string"},"type":"array"},"type":{"type":"string"}},"type":"object"}},"required":["schema","samples"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"Infer a draft-07 JSON Schema from sample JSON document(s). Send one sample as json, or several as samples. Heuristic merge rules: required = keys present in every sample, conflicting types become a type union, integer widens to number, and string formats (date-time, date, email, uri, uuid) are detected from values. Complements json-validate.","last_updated":"2026-09-17T05:20:40.898Z","schemes":["exact","upto"]}