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 If a page is wrong or out of date, report it with the MCP `submit_feedback` tool.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

# Outputs and retries

> Validate final output, retry model calls, and inspect completed PHP runs.

Use output validation when downstream PHP code requires a predictable shape. Model retries cover transient request failures; keep retries for side-effecting tools inside the tool itself and make them idempotent.

## Configure retries

```php theme={null}
$agent = AgentSdk::createAgent(new AgentDefinition(
    id: "research-agent",
    model: "openai/gpt-5.4-nano",
    modelRetry: new ModelRetryConfig(
        maxRetries: 3,
        baseDelayMs: 500,
        maxDelayMs: 4000
    )
));
```

The run result contains its status, steps, messages, normalized usage, stop reason, and final output. Inspect these fields instead of treating the final text as the complete execution record.

```php theme={null}
$result = $agent->run(input: $prompt, client: $client);

echo $result->output;
echo $result->run->status;
echo $result->usage["total_tokens"];
echo $result->usage["cost"];
```

Use [stop conditions](https://phaseo.app/docs/v1/sdk-reference/php/agent-sdk-stop-conditions.md) to enforce budgets and [errors and troubleshooting](https://phaseo.app/docs/v1/sdk-reference/php/agent-sdk-observability.md) to choose recoverable failure behavior.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.