# ATLAS

ATLAS is ilionx's AI gateway and monitoring platform. Your teams call one gateway through an OpenAI-compatible or Anthropic-compatible address. ATLAS routes each request to the right model provider.

- **One gateway for every model.** SDKs and coding tools such as Claude Code work with a base-URL change against `https://<atlas-host>/gateway/openai/v1` or `https://<atlas-host>/gateway/anthropic`.
- **Spend under control.** ATLAS checks budgets before a request reaches the provider.
- **Everything is auditable.** Every authenticated request leaves an immutable record.

For the full rationale, see [Why ATLAS](https://docs.atlas.ilionx.dev/concepts/why-atlas.md).

## Start here

| If you want to           | Go to                                                                                                                   | You will                                                                                       |
| ------------------------ | ----------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------- |
| Evaluate ATLAS           | [Why ATLAS](https://docs.atlas.ilionx.dev/concepts/why-atlas.md), then the [concepts](https://docs.atlas.ilionx.dev/concepts.md)                                              | See how requests flow, what is recorded, how spend is capped and which providers work.         |
| Make a first call        | [Quickstart](https://docs.atlas.ilionx.dev/getting-started/quickstart.md)                                                                             | Sign in, create an API key and make a first model call in about five minutes.                  |
| Set up your organisation | [Set up your first organisation](https://docs.atlas.ilionx.dev/getting-started/first-organisation.md), then the [Admin guides](https://docs.atlas.ilionx.dev/guides/admin.md) | Go from an empty organisation to a first request, then add people, budgets and single sign-on. |
| Connect your tools       | [User guides](https://docs.atlas.ilionx.dev/guides/user.md)                                                                                     | Connect Claude Code, opencode, an IDE or any compatible client with your API key.              |
| Fix a problem            | [Troubleshooting](https://docs.atlas.ilionx.dev/guides/troubleshooting.md)                                                                            | Find the cause of an error from what you see.                                                  |
| Look something up        | [Reference](https://docs.atlas.ilionx.dev/reference.md) and the [glossary](https://docs.atlas.ilionx.dev/reference/glossary.md)                                               | Find the gateway API, API keys, roles, permissions, budgets and error codes.                   |