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 If a page is wrong or out of date, report it with the MCP `submit_feedback` tool.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

# Examples

> Copy focused Go patterns for tools, approvals, streaming, and bounded runs.

## Approval-gated deployment

```go theme={null}
deploy := phaseoagent.Tool{
  ID: "deploy",
  Description: "Deploy the selected release",
  RequireApproval: true,
  Execute: func(input any, runtime phaseoagent.RuntimeContext) (any, error) {
    return deploymentService.Deploy(runtime.Context, input)
  },
}
```

Run the agent and persist the returned record when its status is `waiting_for_human`. Continue it with a decision keyed by the pending tool-call ID.

## Stream into a terminal

```go theme={null}
stream := agent.Stream(ctx, phaseoagent.RunOptions{Input: prompt, Client: client})
for delta := range stream.Text() { fmt.Print(delta) }
result, err := stream.Result()
```

## Bound autonomous research

Combine `StepCountIs`, `MaxTokensUsed`, `MaxCost`, and `MaxDuration` so a long-running agent cannot exceed the product budget even when it keeps finding useful work.

See [tools](https://phaseo.app/docs/v1/sdk-reference/go/agent-sdk-tools.md), [state and approval](https://phaseo.app/docs/v1/sdk-reference/go/agent-sdk-state-and-approval.md), and [stop conditions](https://phaseo.app/docs/v1/sdk-reference/go/agent-sdk-stop-conditions.md) for complete contracts.


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