Mock API response generator

Package a JSON response body with a status and headers for local development.

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Response body as JSON

More options

HTTP status

Extra headers as JSON

Your result

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Updated 2026-09-19

Using Mock API response generator

Mock API response generator keeps protocol metadata separate from the body and validates header boundaries. It always labels the supplied JSON with application/json.

Next: Fake data generator

A worked example

Status 404 with {"error":"Not found"} becomes a fixture containing status, headers and that JSON body.

Before you use the result

This produces a fixture file, not a hosted endpoint or network response. Import the fields into your mock server or request-interception library.

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ToolOctopus. “Mock API response generator.” Updated 2026-09-19. https://tooloctopus.com/mock-api-response-generator.

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