If you use Claude Code, Codex, or Cursor, you've probably hit the wall: each tool is wired to one provider, and switching models means digging through environment variables and restarting. An agent router solves that. It's a single endpoint that speaks your agent's API format on one side and connects to many model providers on the other.
What an agent router actually does
Think of it as a switchboard. Your coding agent sends every request to the router. The router decides which provider and model should handle it, forwards the request in that provider's format, and sends the response back in the format your agent expects. You change models by changing one setting on the router, not by reconfiguring the agent.
The core jobs of an agent router
| Job | What it means |
|---|---|
| One endpoint, many models | Connect Claude, GPT, Grok, Gemini, Kimi, DeepSeek and more through a single base URL. |
| Format translation | Converts between Anthropic-style and OpenAI-style APIs so your agent doesn't care what's underneath. |
| Model switching | Swap providers without touching your agent's config each time. |
| Fallback & routing rules | Some routers can fall back to another model if one is down or rate-limited. |
Why coding agents specifically need one
Claude Code talks the Anthropic API format. Codex and Cursor lean on OpenAI-style APIs. Most non-native models need a translation layer before a given agent will accept them. A router is that layer, plus the convenience of not editing config files every time you want to try a cheaper or faster model.
Open-source vs hosted routers
Two ways to run an agent router
| Open-source (self-host) | Hosted (managed) | |
|---|---|---|
| Setup | You install and configure a proxy | Point your agent at one URL, done |
| Billing | You bring your own keys for each provider | One account, pay-as-you-go across models |
| Maintenance | You keep it updated and running | Handled for you |
| Best for | Tinkerers who want full control | People who just want to switch models and ship |
What that looks like with Wuwei
| Benefit | Detail |
|---|---|
| Zero proxy setup | Wuwei natively supports OpenAI-compatible endpoints, so you don't stand up your own translation proxy. |
| One account, every model | Route Claude Code to Claude, GPT, Grok, Gemini, Kimi, or DeepSeek from a single entry point. |
| Pay for what you use | No per-provider subscriptions to juggle, usage-based billing across all of them. |
| Remote + mobile | Run tasks on remote devices and check in from your phone. |
FAQ
What is an agent router in simple terms?
It's a single endpoint that lets a coding agent like Claude Code or Codex connect to many AI model providers, so you can switch models without reconfiguring the agent each time.
Do I need an agent router to use Claude Code?
No. Claude Code works natively with Anthropic models. You only need a router if you want to use other providers or switch between them easily.
Is an agent router the same as a proxy?
A router usually includes a translation proxy plus model-selection logic. A plain proxy just forwards requests; a router also decides which model handles each one.
Are agent routers free?
Open-source routers like claude-code-router are free to run but you self-host and bring your own provider keys. Hosted options bundle billing and setup for a usage-based fee.