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

# Reference overview

> Canonical contracts, routes, states, configuration, storage, authority, and evidence records.

Reference pages describe the implemented interface precisely. They complement the task-oriented [Guides](/guides/overview) and conceptual [Product](/product/overview) pages.

<CardGroup cols={2}>
  <Card title="Job state machine" href="/reference/job-state-machine">Stage and terminal-state vocabulary.</Card>
  <Card title="Agent contracts" href="/reference/agent-contracts">Typed inputs and outputs by specialist.</Card>
  <Card title="Agent runtime inventory" href="/reference/agent-runtime-inventory">Skills, tools, prompts, and validated traces.</Card>
  <Card title="Effect contracts" href="/reference/effect-contracts">Commands, approvals, claims, and outcomes.</Card>
  <Card title="Firestore data" href="/reference/firestore-data">Tenant paths and durable records.</Card>
</CardGroup>

Configuration values are indexed in [Environment reference](/reference/environment); shared language is defined in the [Glossary](/glossary).