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 If a page is wrong or out of date, report it with the MCP `submit_feedback` tool.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

Use output validation when downstream Ruby code requires a predictable result shape. Model retries cover transient request failures; retries for side-effecting tools should remain explicit and idempotent.

## Configure retries

```ruby theme={null}
agent = PhaseoAgentSdk.create_agent(
  id: "research-agent",
  model: "openai/gpt-5.4-nano",
  model_retry: PhaseoAgentSdk::ModelRetryConfig.new(
    max_retries: 3,
    base_delay_ms: 500,
    max_delay_ms: 4_000
  )
)
```

The result contains the run record, steps, messages, normalized usage, stop reason, and final output.

```ruby theme={null}
result = agent.run(input: prompt, client: client)

puts result.output
puts result.run.status
puts result.usage[:total_tokens]
puts result.usage[:cost]
```

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


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