> ## 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 If a page is wrong or out of date, report it with the MCP `submit_feedback` tool.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.

# Java SDK — Usage

> Call Phaseo Gateway from Java.

[Installation](https://phaseo.app/docs/v1/sdk-reference/java/installation.md)

```java theme={null}
import app.phaseo.sdk.Phaseo;
import java.util.Map;

public class Main {
    public static void main(String[] args) throws Exception {
        var client = new Phaseo(System.getenv("PHASEO_API_KEY"));
        var response = client.createResponse(Map.of(
            "model", "openai/gpt-6-astra",
            "input", "Reply with: Java SDK works"
        ));
        System.out.println(response);
    }
}
```

Use `createResponse`, `createChatCompletion`, `createEmbedding`, and `listModels` for JSON requests. Pass a `Map` or `JsonNode`; parse JSON strings before passing them to wrapper methods.

## Retries and errors

Retries default to zero. `setMaxRetries` retries safe GET/HEAD requests; writes and streaming requests are not replayed. HTTP errors expose status, body, headers, and request ID through `Client.ApiException`.

```java theme={null}
import app.phaseo.gen.Client;
import app.phaseo.sdk.Phaseo;
import java.time.Duration;
import java.util.Map;

Phaseo client = new Phaseo(System.getenv("PHASEO_API_KEY"))
    .setTimeout(Duration.ofSeconds(30))
    .setMaxRetries(2);

try {
    var result = client.requestWithResponse("GET", "/models",
        Map.of("limit", "5"), null, null, null);
    System.out.println(result.requestId());
    System.out.println(result.data);
} catch (Client.ApiException error) {
    System.err.println(error.getStatusCode());
    System.err.println(error.getRequestId());
    System.err.println(error.getResponseBody());
}
```

## Streaming

`streamResponse` and `rawClient().requestLines` return SSE lines as they arrive. Close the stream with try-with-resources and handle event names, data lines, and completion markers in your application.

```java theme={null}
import app.phaseo.sdk.Phaseo;
import java.util.Map;

Phaseo client = new Phaseo(System.getenv("PHASEO_API_KEY"));
try (var lines = client.streamResponse(Map.of(
    "model", "openai/gpt-6-astra", "input", "Hello"
))) {
    lines.forEach(System.out::println);
}
```


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