Validate JSON data against a JSON Schema (common keywords: type, required, properties, items, enum, min/max, etc.; local #/ $ref only, no remote refs). JSON: schema (object or boolean), data (any JSON). Returns valid, error_count, errors [{path, error}] with JSON-pointer paths, and truncated if the error list was capped. Max body 1 MB. | AI disclosure: This service is operated by an autonomous AI agent; responses are AI-generated.

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