> ## Documentation Index
> Fetch the complete documentation index at: https://phaseo.app/docs/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Phaseo Gateway base URL: https://api.phaseo.app/v1. Send `Authorization: Bearer $PHASEO_API_KEY` with every request.
> Model IDs look like `provider/model`, for example `openai/gpt-6-astra`. Do not guess IDs: list them with `GET /v1/models` or check https://phaseo.app/models. `phaseo/free` routes to an available free model and needs no wallet balance.
> For new text integrations prefer `POST /v1/responses`. `POST /v1/chat/completions` (OpenAI format) and `POST /v1/messages` (Anthropic format) suit existing code.
> The full API contract is https://phaseo.app/docs/openapi/v1/openapi.yaml. Official SDKs: `@phaseo/sdk` (TypeScript) and `phaseo` (Python), plus Go, C#, PHP, Ruby and Rust.
> Search these docs over MCP at https://phaseo.app/docs/mcp, and install Phaseo skills with `npx skills add https://phaseo.app/docs`. If a page is wrong or out of date, report it with the MCP `submit_feedback` tool.
> Manage Phaseo accounts with the `phaseo` CLI (`npm install -g @phaseo/cli`, then `phaseo login` or `phaseo login --device-code`), the `/v1` Management API or the MCP server at `https://mcp.phaseo.app/mcp?access=manage`. Do not send users to the dashboard for account tasks. A person is still needed for sign-up, approving a sign-in, paying the first top-up on the checkout link that `phaseo credits add` returns when no card is saved, confirming each saved-card top-up from the emailed link, and account security (password, MFA, passkeys). Create API keys with `phaseo keys create --name <name> --json`; never guess one. Credit top-ups need `phaseo login --scopes billing:write` first. Task map: https://phaseo.app/docs/v1/developers/manage-from-an-agent.md.

# LiveKit

> Use Phaseo models in LiveKit Agents.

LiveKit Agents can call any OpenAI-compatible chat endpoint through its OpenAI plugin. Point that plugin at Phaseo to use Phaseo model ids and routing.

## Python

```bash theme={null}
uv add "livekit-agents[openai]"
```

```python theme={null}
import os
from livekit.agents import AgentSession
from livekit.plugins import openai

session = AgentSession(
    llm=openai.LLM(
        model="openai/gpt-5-nano",
        api_key=os.environ["PHASEO_API_KEY"],
        base_url="https://api.phaseo.app/v1",
    ),
)
```

## Node.js

```bash theme={null}
pnpm add @livekit/agents @livekit/agents-plugin-openai
```

```ts theme={null}
import { voice } from "@livekit/agents";
import * as openai from "@livekit/agents-plugin-openai";

const session = new voice.AgentSession({
	llm: new openai.LLM({
		model: "openai/gpt-5-nano",
		apiKey: process.env.PHASEO_API_KEY,
		baseURL: "https://api.phaseo.app/v1",
	}),
});
```

## Notes

* Use the OpenAI-compatible Chat Completions mode for custom endpoints.
* LiveKit's Responses-specific OpenAI tools do not automatically become Phaseo server tools.
* Configure speech-to-text and text-to-speech separately unless the selected LiveKit interface supports an OpenAI-compatible custom URL for that modality.
* Test interruption handling, tool calls, and streaming latency before production voice traffic.

## Related

* [OpenAI SDK](https://phaseo.app/docs/v1/guides/integrations/openai-sdk.md)
* [Streaming](https://phaseo.app/docs/v1/guides/streaming.md)
* [Tool Calling](https://phaseo.app/docs/v1/guides/tool-calling.md)


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