API Response Field Extractor

How to use this developer tool

1. Paste json api response or load the built-in sample.
2. Check the expected syntax and remove credentials that should not appear in output.
3. Select Extract Fields or press Ctrl/Cmd + Enter.
4. Review the summary, counts, and interpretation before copying or downloading.

What this developer tool does

Walks nested JSON responses and reports field paths, observed types, occurrence counts, and sample values.

The output is intended as a working artifact, not proof that a remote endpoint or signature is valid.

Example

Load the sample to see a realistic json api response. The generated result includes fieldcount and typecount, matching the values shown in the output panel.

{"data":[{"id":42,"name":"Ada","active":true,"profile":{"team":"API"}}],"meta":{"page":1}}

Use cases

• Prepare API documentation during a code review.
• Inspect an unfamiliar integration payload before writing client code.
• Create a checked, copy-ready artifact for tests or issue reports.
• Compare exported configuration with the behavior expected by a team.

Tips for reliable output

• Use a representative sample rather than a heavily shortened fragment.
• Remove live tokens, secrets, and personal data before pasting.
• Keep original field names and letter case.
• Read the interpretation message before using downloaded output.
• Test unusual null, array, and Unicode values when the format supports them.

Processing details

All parsing and generation runs locally with standard browser JavaScript. The implementation uses explicit syntax checks and produces stable text for the same input.

Types are inferred only from values present in the pasted sample. Null values cannot reveal the intended schema type.