Axios architecture

What is Axios?

Axios is a promise-based HTTP client used from both browsers and Node.js. You call the same API in either place, and the library takes care of building the request, sending it over whatever transport the platform provides, and turning the response into something predictable.

The interesting part of Axios is that dual-target design. Which code is shared between browser and server, and which is swapped out per platform? Where do interceptors sit relative to the transport, and what can they still change? How does one config object get merged from defaults, instance settings, and per-request overrides before anything is sent? Those answers live across a set of small modules rather than in one obvious entry point.

The map on this page is JigsawML's read of the axios repository. It sorts the source into the nine areas below, shows which ones depend on which, and lets you open any of them to see the code underneath.

Key components in the Axios architecture

JigsawML identified and labelled these components automatically by analysing the Axios repository. Open the interactive map to expand any of them and read the underlying code.

• Request Engine

  The core dispatch path that turns a config object into a sent request.

• Transport Adapters

  Per-platform senders — XHR, Node HTTP, and fetch — behind a single interface.

• Platform Abstraction

  The shims that let identical calling code run in a browser or on Node.

• Utilities

  Shared helpers for merging config, handling headers, and normalising data.

• Public API

  The surface consumers import: the axios instance, its factory, and exported types.

• Build Tooling

  Bundling and packaging that produce the published browser and Node artifacts.

• Test Suites

  Unit and integration tests covering the request path on both platforms.

• Documentation Examples

  Reference documentation and runnable samples kept in the repository.

• External Services

  Outside endpoints and registries the project reaches beyond its own code.

How this map was generated

JigsawML ingested the public repository, resolved its dependencies, and grouped the code into architectural components using AI agents and a knowledge graph. Nothing here was drawn by hand. The same process runs against private repositories and cloud accounts, and re-runs on every commit so the map never goes stale.

Other open-source architectures

• Flask architectureThe Python micro framework for building web applications
• Hono architectureAn ultrafast web framework built on Web Standards
• Instro architectureAn open-source Python library for scripting and automating test equipment
• Nanoclaw architectureA personal AI agent which runs securely in containers
• Nemoclaw architectureA reference stack for running OpenClaw in OpenShell
• OpenClaw architectureA self-hosted gateway that connects chat apps to AI coding agents
• OpenHands architectureA self-hosted developer control center for coding agents and automations
• Pydantic architectureData validation library for Python
• Pyramid architectureThe Start Small, Finish Big, Stay Finished Framework
• Zod architectureA TypeScript-first validation library