# Intervene

Intervene is an HTTP(S) API proxy for development that can mock endpoints and modify requests and responses.

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## Open Sourcing Intervene

DevFeed: [Open Sourcing Intervene](<https://devfeed.tech/articles/open-sourcing-intervene-2105.md>)

Original publisher: [Read original article](<https://developers.soundcloud.com/blog//open-sourcing-intervene>)

Published: 2020-05-05T00:00:00Z

Content type: article

Language: en

Sources: [SoundCloud Backstage Blog](<https://devfeed.tech/sources/soundcloud-backstage-blog.md>)

Topics: [Intervene](<https://devfeed.tech/topics/intervene.md>), [Mocking](<https://devfeed.tech/topics/mocking.md>), [TypeScript](<https://devfeed.tech/topics/typescript.md>), [BFF](<https://devfeed.tech/topics/bff.md>), [Web](<https://devfeed.tech/topics/web.md>), [Processes](<https://devfeed.tech/topics/processes.md>), [browser](<https://devfeed.tech/topics/browser.md>), [JavaScript](<https://devfeed.tech/topics/javascript.md>), [API](<https://devfeed.tech/topics/api.md>)

Tags: [api](<https://devfeed.tech/tags/api.md>), [bff](<https://devfeed.tech/tags/bff.md>), [browser](<https://devfeed.tech/tags/browser.md>), [code](<https://devfeed.tech/tags/code.md>), [configuration](<https://devfeed.tech/tags/configuration.md>), [dev-tools](<https://devfeed.tech/tags/dev-tools.md>), [documentation](<https://devfeed.tech/tags/documentation.md>), [frontend](<https://devfeed.tech/tags/frontend.md>), [http](<https://devfeed.tech/tags/http.md>), [http-server](<https://devfeed.tech/tags/http-server.md>), [intervene](<https://devfeed.tech/tags/intervene.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [mocking](<https://devfeed.tech/tags/mocking.md>), [node-js](<https://devfeed.tech/tags/node-js.md>), [open](<https://devfeed.tech/tags/open.md>), [process](<https://devfeed.tech/tags/process.md>), [proxy](<https://devfeed.tech/tags/proxy.md>), [tools](<https://devfeed.tech/tags/tools.md>), [typescript](<https://devfeed.tech/tags/typescript.md>), [web](<https://devfeed.tech/tags/web.md>), [web-development](<https://devfeed.tech/tags/web-development.md>)

### AI overview

SoundCloud open-sources Intervene, a Node.js process that acts as a single-host proxy for altering requests and responses during frontend development. It supports endpoint overrides, TypeScript or JavaScript configuration, automatically trusted self-signed HTTPS certificates, and repository-shared mocks.

### Source excerpt

A little while back, the web team at SoundCloud got an urgent report that our upload page looked weird in the US. Web engineering is based...