API Trust Score
Score public APIs on security, schema, and readiness signals.
Quick Overview
Score public APIs on security, schema, and readiness signals. This tool runs entirely in your browser, ensuring your data remains private and secure. No server-side processing is required for basic formatting, validation, or conversion tasks.
Client-Side Sandbox Guarantee (100% Secure & Local)
At JsonOnlineParse, we prioritize developer data sovereignty and absolute privacy. This tool executes all formatting, validation, parsing, and type-synthesis logic 100% locally within your browser's V8 engine memory thread. None of your payload inputs, API headers, auth tokens, or variables are ever uploaded, processed server-side, or stored by us. Run your configurations in a completely secure, local-first sandbox.
Operational Protocol
- 1Enter a public API URL or paste a JSON sample.
- 2Run the scanner to collect security and schema signals.
- 3Read the score breakdown and flagged items.
- 4Share findings with your team or track improvements over time.
Frequently Asked Questions
Q:What is an API Trust Score?
A composite signal for security headers, schema health, performance hints, and stability—useful for quick due diligence.
Q:Is my URL stored?
Scoring is designed to run in your browser; paste sample JSON when CORS blocks live fetches.
Q:Why do some checks mention CORS?
Browsers may prevent cross-origin requests; the tool still scores what it can infer from URLs and samples.
Q:Is this free?
Yes. JsonOnlineParse offers this checker at no cost.