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

# Reference

> Formal technical documentation for the ISCL API, schemas, configuration, and error codes.

## What you will learn

This section provides reference material for developers integrating with or operating Clavion. It is organized for lookup, not for learning -- see [Concepts](/concepts/index) for explanations and [Guides](/guides/index) for walkthroughs.

<CardGroup cols={2}>
  <Card title="REST API" icon="server" href="/reference/rest-api">
    All endpoints with request/response schemas and curl examples.
  </Card>

  <Card title="TxIntent Schema" icon="code" href="/reference/txintent-schema">
    The declarative transaction format used by all adapters.
  </Card>

  <Card title="SkillManifest Schema" icon="puzzle-piece" href="/reference/skillmanifest-schema">
    Skill packaging format for the sandbox registry.
  </Card>

  <Card title="Configuration" icon="gear" href="/reference/config-reference">
    Environment variables, PolicyConfig, and programmatic options.
  </Card>
</CardGroup>

<Card title="Error Codes" icon="triangle-exclamation" href="/reference/error-codes">
  HTTP error shapes, status codes, and recovery guidance for every endpoint.
</Card>

## Base URL

All API endpoints are served at:

```text theme={null}
http://127.0.0.1:3100
```

The API is bound to localhost only. See [ADR-004](/concepts/architecture) for the rationale.

## Authentication

No authentication is required. Access control is enforced by the localhost binding (only local processes can connect) and the approval token mechanism (fund-affecting operations require human confirmation).