Inssman

Intercept HTTP requests and responses. Modify HTTP request/response body. Modify HTTP request/response headers. Redirect requests. HTTP logger. Mock APIs. Inject scripts. Block requests. Modify query parameters. Maintained by vvmgev on GitHub, where it has earned 131 stars from the community.

It's actively developed around chrome-extension, debug, http-interceptor, and is a solid reference for anyone building with these tools.