# Quickstart

Modelink is a model gateway: one API key lets you call models from many providers inside the client you already use.

This page maps out the route. Three steps and you are running.

::: tip Access Note
Some content on this site or related services may require a proxy before access works reliably. Use the default `api.aigoo.xyz` endpoint for API requests; the former mainland acceleration endpoint is deprecated.
:::

::: details For AGENTS
For bulk Markdown reads, use [markdown-sitemap.xml](https://docs.aigoo.xyz/markdown-sitemap.xml). For a single page, append `.md` to any documentation URL that does not end with `/`, for example `/en/docs/quickstart.md`.
:::

## Three Steps

| Step | What to do | Where |
| --- | --- | --- |
| 1 | Top up or subscribe to get inference credits | [Top-up/Subscription](https://api.aigoo.xyz/purchase) · [Billing](/en/docs/modelink/billing) |
| 2 | Create an API key and pick a group | [Create API Key](/en/docs/modelink/create-apikey) |
| 3 | Enter the key and endpoint in your client | See the selection below |

Prices shown in the model marketplace are the final billing prices; no extra conversion is needed.

## Pick Your Client

<DocsTabs default-tab="agent">
  <DocsTab title="Agent" name="agent">

Best for terminal workflows, programming tasks, or users who want AI Agent assistance while developing.

Start with [CC-Switch](/en/docs/agents/cc-switch). It manages API keys and provider settings in one place, so you do not have to edit environment variables by hand. Then follow the guide for your client:

| Client | Best for | Guide |
| --- | --- | --- |
| Codex | OpenAI's official CLI and desktop app | [Guide](/en/docs/agents/codex) |
| ZCode | Desktop AI coding agent with custom model providers | [Guide](/en/docs/agents/zcode) |
| Codex++ | Adds extra capabilities on top of Codex | [Guide](/en/docs/agents/codex-plus-plus) |
| Hermes | Lightweight terminal agent | [Guide](/en/docs/agents/hermes) |

  </DocsTab>

</DocsTabs>

## Going Further

Once things work, these may be useful:

- [Fast Mode](/en/docs/modelink/fast-mode) - force the high-priority tier at the key level
- [Team](/en/docs/modelink/team) - share the owner's balance while everyone keeps their own keys

## Troubleshooting

- [FAQ](/en/docs/faq) - connection drops, model detection, and other common questions
- [API Endpoints](/en/docs/modelink/endpoints) - choosing an endpoint and migrating from deprecated routes
- [Usage Policy](/en/docs/tos/usage-policy) - what gets accounts banned