Paste a complete response
Use the response body from a development or test environment after removing secrets that are not required.
Developer tools
API Response Inspector
JSON API Response Inspector
The result will appear here after you run the tool.
Inferred schema
The result will appear here after you run the tool.
Press Ctrl or Command and Enter to run the tool.
About this tool
About this tool
API Response Inspector reviews a JSON response for shape, record consistency, field types, null usage, nesting depth, size, and potential sensitive values by analyzing the payload in the browser. It also infers a JSON Schema for integration review.
Paste an API response to review its shape, record consistency, field types, null usage, nesting, estimated size, potential sensitive values, and inferred JSON Schema before integrating it into an application.
Built for daily work
- Review a third-party API before integration.
- Document internal response structures.
- Detect unexpected null and type variation across records.
- Check sample responses for potentially sensitive fields before sharing.
How to use this tool
How to use this tool
Run the inspection
The tool parses the JSON and analyzes size, depth, field types, nulls, repeated record shapes, and potentially sensitive field names.
Review or export
Use the report to document the payload, generate a schema, or continue into diff and TypeScript tools.
Key features
Key features
Structural overview
See root type, maximum depth, array records, object count, field count, and minified size.
Field inventory
Review field paths, observed types, nullability, occurrence counts, and representative values.
Safety review
Potential tokens, secrets, passwords, emails, and identity fields are flagged by field name for manual review.
Connected workflow
Continue directly to JSON Diff, JSON Schema, JSONPath, or TypeScript generation.
Practical use cases
Practical use cases
- Review a third-party API before integration.
- Document internal response structures.
- Detect unexpected null and type variation across records.
- Check sample responses for potentially sensitive fields before sharing.
- Prepare representative data for schema or TypeScript generation.
Private by default
For local tools, input is processed in your browser and is not sent to application analytics.
Data processing noticeTechnical details
Technical details
ProcessingLocal browser processing
Accepted files.json and .txt
Maximum local file25 MB
Schema outputJSON Schema draft 2020-12 style
Field analysisPath, types, nulls, occurrences, samples
Remote requestsNone
Limitations and important notes
Limitations and important notes
- A single sample response may not represent every production response shape.
- Sensitive field detection is heuristic and does not replace security review.
- Large arrays are sampled to keep analysis responsive on ordinary devices.
Frequently asked questions
Frequently asked questions
No. It analyzes only the JSON response you paste or upload. Remote requests are not made.
No. It is a field-name and value-pattern review aid. You must still perform a complete security and privacy assessment.
Yes. The tool detects arrays of objects and compares observed field types and presence across a sample of records.
Yes. Use the connected JSON to TypeScript action after reviewing the response.
No. Processing is local unless you explicitly save the workspace in your own browser.
Related guides and solutions
Related guides and solutions
How to inspect a JSON API response before integration
A structured API response review process for developers, QA teams, technical writers, and integration engineers.
Learn moreHow to validate JSON with JSON Schema
A practical introduction to generating a starting schema, strengthening constraints, and interpreting validation errors.
Learn moreWhat local browser processing means for online tools
A transparent explanation of local tool processing, temporary browser memory, local storage, downloads, analytics boundaries, and cases that require remote services.
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