Changelog

What's new in JSON Guardian

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v1.0.0LatestFebruary 2, 2026

Initial public release of JSON Guardian!

Features

  • JSON Schema validation (Draft 7 compliant)
  • Automatic JSON repair for common syntax errors
  • Schema enforcement with combined validate + repair
  • Batch validation endpoint for multiple documents
  • API key management and usage tracking
  • Rate limiting per API key
  • Extract endpoint – strip JSON from LLM prose/markdown
  • Partial endpoint – complete streaming JSON in real-time
  • Generic Batch – batch any operation (validate, repair, enforce, extract, partial)
  • Type coercion – smart conversion (e.g. "twenty-five" → 25)
  • RapidAPI tracking – analytics for marketplace usage

API Endpoints

  • POST /api/v1/validate – validate JSON against schema
  • POST /api/v1/repair – repair malformed JSON
  • POST /api/v1/enforce – schema enforcement with type coercion
  • POST /api/v1/extract – extract JSON from prose
  • POST /api/v1/partial – complete partial JSON

Performance

  • Sub-10ms average response time
  • 3,000+ requests per second throughput
  • Optimized Rust implementation

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