Is JSON Validator free to use?
Yes. JSON Validator is available as an online developer tool without requiring an account.
Validador JSON
Valida esquemas (Ajv).src/tools/Validador JSON
Ready to validate...
Runs locallyNo uploadNo accountOpen web
JSON Validator: private online developer utility
JSON Validator is a focused developer utility for validate schema (ajv). It is part of Sreejith Tools, a collection of fast online tools for API work, data cleanup, debugging, and web development.
When to use it
- - Clean API payloads before sharing them in tickets or docs.
- - Validate structured data copied from logs, webhooks, and config files.
- - Convert or inspect developer data without opening a heavyweight IDE.
Common input issues
- - Pasted input includes invisible whitespace or smart punctuation.
- - The source data is valid in one format but invalid in the target format.
- - A copied value includes surrounding quotes, shell escaping, or truncated content.
Example
Inspect structured data
Input
{"status":"ok","items":[1,2,3]}Output
Readable, validated, or converted structured output.
Does JSON Validator upload my data?
For this stateless tool, the transformation runs in the browser and is designed for private day-to-day development data.
Can AI assistants use JSON Validator?
Yes. This tool is safe to expose through the stateless MCP interface for agent workflows.