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

# Overview

> The whole capability surface of the `helix` binary, at a glance — sub-agents, agent mode, goals, monitoring, tracing, Prime, and the rest.

Everything here ships in the binary today. The lifecycle — spec → build → evaluate → diagnose →
optimize — has [its own page](/helix/how-the-loop-works); these are the capabilities around it.

<CardGroup cols={2}>
  <Card title="Sub-agents" icon="users" href="/helix/features/sub-agents">
    Dispatch agents in parallel, then watch and steer them live.
  </Card>

  <Card title="Agent mode" icon="user-gear" href="/helix/agent-mode">
    A lean coding agent on the same harness, without the lifecycle.
  </Card>

  <Card title="Goals" icon="bullseye" href="/helix/features/goals">
    A loop that runs until the goal lands, blocks, or spends its budget.
  </Card>

  <Card title="Monitor" icon="wave-pulse" href="/helix/features/monitor">
    A background watch on a long command, streamed as notifications.
  </Card>

  <Card title="Trace viewer" icon="chart-gantt" href="/helix/features/trace-viewer">
    `/trace` — a read-only walk through your session logs.
  </Card>

  <Card title="Prime" icon="code" href="/helix/modes">
    An agent loop whose only tool is code it writes and runs. Experimental.
  </Card>

  <Card title="Project context" icon="file-lines" href="/helix/features/project-context">
    `AGENTS.md` / `CLAUDE.md`, loaded into every agent's prompt.
  </Card>

  <Card title="Session commands" icon="terminal" href="/helix/sessions#session-commands">
    The slash commands that drive a running session.
  </Card>
</CardGroup>

<Card title="How the loop works" icon="arrows-spin" href="/helix/how-the-loop-works">
  The five lifecycle stages these capabilities serve — and the two rules that keep the loop honest.
</Card>