JSON Request Validator

Validate request bodies and required payload keys

Use JSON Request Validator

Input and output check

JSON Request Validator

Start from the sample input, then inspect the output panes, diagnostics, and structured mapping view before you copy any artifact into production tooling.

Runtime summary

Preparing output

Request blueprint
Diagnostics

Output details

Output review

Review these checks before copying generated output into a request, fixture, client, or support note.

Syntax integrity

Start with syntax integrity to confirm the workbench is modeling the same input surface you are debugging.

Required-key checks

The output pane keeps required-key checks visible so you can compare the raw input with the derived artifact.

Path inventory

Use path inventory as the final review pass before shipping the output into a terminal, database, or API client.

Output review rule

Use the normalized body, required-key diagnostics, and path inventory together so syntax fixes do not hide contract gaps.

Sample input to try

Paste the raw JSON request body and list required keys from the endpoint contract, one path per line.

Expected output review

Review parse status, required-key coverage, normalized JSON, and discovered paths before replaying the request.

Real debugging sample
Body:
{"customerId":"cus_24891","items":[{"sku":"pro-plan","quantity":1}],"metadata":{"source":"checkout"}}

Required keys:
customerId
items
items.0.sku

Expected readout:
valid JSON, required keys found, paths include metadata.source
Common errors to check
  • Checking syntax only while omitting required path checks from the contract.
  • Using dot paths that do not match arrays, such as items.sku instead of items.0.sku.
  • Pasting escaped JSON from logs instead of the actual request body bytes.
Next checks
  • Format the body when reviewers need readable nested fields.
  • Compare the body against the OpenAPI endpoint contract.
  • Move the validated body into API Request Builder for method and header review.
  • Generate Go or TypeScript types after the sample shape is confirmed.
Local processing: Validation runs locally; redact bearer tokens, customer IDs, emails, and payment references before sharing request samples.
JSON FormatterMake the validated body readable for review.JSON ValidatorRun a syntax-only JSON check when needed.OpenAPI Endpoint ExplorerCompare payload expectations with the spec.API Request BuilderAttach method, URL, and headers to the body.JSON to Go ConverterGenerate structs from the confirmed payload shape.

Built for API clients validating payload structure before shipping or replaying requests. Use this workbench for checking a JSON request body for syntax integrity and required keys before send time, then read the diagnostics before copying the artifact into a client, config, import job, or support note.

Audience
API clients validating payload structure before shipping or replaying requests
Primary artifact
a normalized request body report
Caveat
This tool validates syntax and requested keys, but it does not replace a full schema-aware contract test.
Privacy
Browser-only input, no upload step, copy-ready output.
Syntax integrityRequired-key checksPath inventory

Request workflow and diagnostics

How The Workbench Is Structured

1. Raw input stays visible

The calculator keeps the original input close to the generated artifact so you can spot transformation drift before you copy anything forward.

2. Diagnostics sit beside output

Each tool pairs the generated output with concise warnings or checks so you do not need to interpret a raw string in isolation.

3. Mapping beats guesswork

The mapping panel highlights the pieces that matter for handoff: headers, query keys, columns, claims, chunk sizes, or file signatures.

The summary panel highlights the request, payload, token, or generated artifact that matters most for this workflow.

How To Use This Developer Workbench

Where JSON Request Validator Fits In The Workflow

JSON Request Validator is built for API clients validating payload structure before shipping or replaying requests. The page treats the task as a workbench, not a single conversion box, so the output stays explainable when you hand it to another engineer or paste it into docs.

Inside API & HTTP, the focus is checking a JSON request body for syntax integrity and required keys before send time. That is why the page keeps the original input visible alongside the derived artifact and diagnostics.

  • Syntax integrity
  • Required-key checks
  • Path inventory

How To Prepare Inputs

Enter the raw JSON body and list required keys one per line so the workbench can flag omissions and map visible payload paths.

If you are debugging a live issue, start with the exact value captured from logs, docs, or traces before making cleanup edits. That makes the before-and-after result more trustworthy.

Checks Before You Ship The Result

Use the normalized body, required-key diagnostics, and path inventory together so syntax fixes do not hide contract gaps.

This tool validates syntax and requested keys, but it does not replace a full schema-aware contract test.

Request checks before copying output

Questions about this developer tool

What does JSON Request Validator produce?

JSON Request Validator is tuned for checking a JSON request body for syntax integrity and required keys before send time. The main output is a normalized request body report, supported by diagnostics and a mapping view so you can review the transport or data shape before using it elsewhere.

What input shape works best for JSON Request Validator?

Enter the raw JSON body and list required keys one per line so the workbench can flag omissions and map visible payload paths.

What should I verify before using the output in production?

Use the normalized body, required-key diagnostics, and path inventory together so syntax fixes do not hide contract gaps. This tool validates syntax and requested keys, but it does not replace a full schema-aware contract test.

Developer references and workflow assets

References