No. It's read in your browser. HAR files hold cookies and tokens, so that matters.

How good is the result?

It describes only what was recorded: fields that were never sent aren't there, and every value seen is an example. Use it as a first draft.

HAR to OpenAPI

Input

Output

HAR to OpenAPI

No spec for the API you're working with? Record it: save the Network panel as a HAR while you use the app, and turn the API calls into an OpenAPI document with every path, parameter and body schema.

How do I use the HAR to OpenAPI?

In DevTools, open Network, use the app, then right-click and Save all as HAR.
Open the HAR here; Show: OpenAPI document is picked for you.
Read or save the YAML or JSON, and check the schemas against what you know.

What does the HAR to OpenAPI do?

One operation per method and path
Ids in addresses (numbers, UUIDs, ORD-20419) become path parameters
Query parameters, required when every call had them
Schemas merged from every body seen, nested objects as components
Every status seen, with error bodies as Error
Bearer and basic auth as security schemes

Frequently asked questions

Is the HAR uploaded?: No. It's read in your browser. HAR files hold cookies and tokens, so that matters.
How good is the result?: It describes only what was recorded: fields that were never sent aren't there, and every value seen is an example. Use it as a first draft.

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Last updated 22 October 2026 · Version 4.8 · Changelog
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