# Reverse Engineer an API ![](https://pasteboard.co/n2094TfDB8qt.png) ## Tools to use 1. FoxyProxy 2. mitmweb 3. mitmproxy2swagger 4. 5. Postman ## Steps to Reproduce 1. **Foxyproxy:** Turn on 8080 port using Foxy Proxy.(Label it anything you want) 2. **mitmweb:** Run `sudo mitmweb` and then go to mitm.it and install & import the certificate. 3. **Explore Website w/ API's functionalities:** Go to the website w/ api that you want to gather the API endpoints from and explore it's functionalities.\ The mitmweb tool will capture it, afterwards you can download the captures as a flow file in mitmweb by clicking on file -> save all. 4. **mitmproxy2swagger:** Here we run `sudo mitmproxy2swagger -i flows -o spec.yml -p -f flow`. This will turn flows file to a yml file. Afterwards you need to remove the ignore: in the spec.yml and run `sudo mitmproxy2swagger -i flows -o spec.yml -p -f flow --examples`, --examples is added to enhance the documentation of the api endpoints. 5. **:** Now you can import the clean spec.yml file and visualize the different endpoints. 6. **Postman:** You can also import the spec.yml in postman which will produce a well organized collection. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://kathan19.gitbook.io/howtohunt/api-testing/reverse_engineer_an_api.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.