# NEXUS AI Gateway

NEXUS AI provides an AI Gateway for model traffic. The gateway supports OpenAI-compatible and Anthropic-compatible interfaces, provider routing, failover, model aliases, usage tracking, budgets, rate limits, and guardrails where configured.

## Interfaces

The documented gateway interfaces include:

- OpenAI-compatible requests under `/v1`;
- Anthropic-compatible requests under `/v1/messages`; and
- an MCP gateway for aggregating configured MCP servers.

Configured providers can include Anthropic, OpenAI, Google Gemini, xAI Grok, OpenRouter, and other OpenAI-compatible endpoints where enabled. Provider keys remain in the gateway rather than application source.

## Credentials

Provider keys are stored and used by the gateway. Agents should not place provider credentials in application source code or send them to this public documentation service.

## Availability

Gateway features, providers, budgets, and routing policies depend on the NEXUS deployment and organization configuration. Inspect the authenticated gateway configuration before relying on a provider or model alias.

## Related resources

- [Security](/docs/security.md)
- [MCP](/docs/mcp.md)
- [NEXUS AI Gateway](https://nexusai.run/ai-gateway)