What is APXY used for?

APXY is a developer proxy that runs locally and records HTTP and HTTPS traffic, with a CLI and web UI for mocking, replaying and comparing requests, built to work with AI coding agents. It is a good fit for debugging failing API calls and giving a coding agent real network context.

No. APXY is proprietary (closed-source) software. In the API Tools category, open-source options include Mockoon, ATAC and Insomnia Mockbin.

What are some alternatives to APXY?

APXY competes with Charles Proxy, Proxyman and Fiddler.

APXY: features, pricing and alternatives

About APXY

APXY is a network debugging tool that runs as a local proxy on a developer's machine. It sits between an app and the services it calls, so every HTTP and HTTPS request and response can be read in plain text while the surrounding debugging context stays attached to the session.

Beyond capture, APXY lets users create and test mock rules that change responses from unstable endpoints, replay requests, compare a failing request with a working one and simulate network conditions such as latency and bandwidth limits. It is operated from a command line and a web interface, and an MCP server and agent skill give AI coding agents the same control, so they can gather evidence and verify fixes from the terminal.

A separate iOS SDK supports capturing traffic from mobile devices. APXY installs with a shell script and keeps the proxy local. It is a commercial product with a pricing page, a documentation site and comparison pages against other tools, and it suits developers who debug API integrations, often together with an AI coding assistant.

Key features

Captures HTTP and HTTPS traffic locally
Mock rules for unstable endpoints
Request replay and diffing
Network throttling for latency and bandwidth
CLI and web UI
MCP server and agent skill
iOS SDK for mobile capture

Good fit for

→Debugging failing API calls
→Giving a coding agent real network context

Tags: network-debugging; proxy; api-mocking; http; cli; mcp; developer-tools; ai-agents

APXY: questions and answers

What is APXY used for?: APXY is a developer proxy that runs locally and records HTTP and HTTPS traffic, with a CLI and web UI for mocking, replaying and comparing requests, built to work with AI coding agents. It is a good fit for debugging failing API calls and giving a coding agent real network context.
Is APXY open source?: No. APXY is proprietary (closed-source) software. In the API Tools category, open-source options include Mockoon, ATAC and Insomnia Mockbin.
What are some alternatives to APXY?: APXY competes with Charles Proxy, Proxyman and Fiddler.