---
name: json-schema-validator
description: "AI Response Validator (AI Response Validator) via devops.majbase.com's free public API, no key required. Keywords: validate ai response against schema, check llm json output, does llm output match schema."
---

# AI Response Validator

AI Response Validator. Calls devops.majbase.com's free public API — no API key or authentication required.

## Endpoint

```
POST https://devops.majbase.com/json-schema-validator/api
```

## Request / Response

```
API: POST /json-schema-validator/api
  instance=<JSON value>       (required)
  schema=<JSON Schema object> (required)
Returns {"valid": bool, "errors": [{"path", "message"}, ...]}, or {"error": "..."}.
```

## Example

```bash
curl -sS -X POST https://devops.majbase.com/json-schema-validator/api -H "Content-Type: application/json" -d '{"instance":{"name":"Ivan","age":-5},"schema":{"type":"object","properties":{"name":{"type":"string"},"age":{"type":"integer","minimum":0}},"required":["name","age"]}}'
```

## Notes

- No API key or authentication required.
- Full interactive tool: https://devops.majbase.com/json-schema-validator/