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

# Resources

> Reference material, changelogs and help for building on Eco: supported chains and tokens, contract addresses, the glossary, the docs, API and Sauce SDK changelogs, the FAQ, security and audits, and support channels.

## Reference

<CardGroup cols={2}>
  <Card title="Supported chains and tokens" icon="link" href="/resources/supported-chains-tokens">
    Discover chains and tokens with `GET /v1/chains` and `GET /v1/tokens`.
  </Card>

  <Card title="Contract addresses" icon="file-contract" href="/resources/contract-addresses">
    Deployed Routes contracts per chain. Sauce addresses are under [Architecture and deployments](/programmable-transactions/sauce/architecture-and-deployments#deployments).
  </Card>

  <Card title="Intent types" icon="route" href="/resources/intent-types">
    The route shapes a quote can contain and how to read `steps[]`: Eco solver fill, pre- and post-bridge swaps, CCTP burn and mint. Execution and tracking considerations.
  </Card>

  <Card title="Glossary" icon="book" href="/concepts/glossary">
    Definitions of terms used in the docs.
  </Card>
</CardGroup>

## Changelog

<CardGroup cols={3}>
  <Card title="Docs and platform" icon="newspaper" href="/resources/changelog/docs">
    Navigation, product and coverage changes, newest first.
  </Card>

  <Card title="API" icon="code" href="/resources/changelog/api">
    The v1 reference, wire format, key policy, quote signatures, Gateway paths.
  </Card>

  <Card title="Sauce SDK" icon="flask" href="/resources/changelog/sauce-sdk">
    npm releases of the compiler and SDK, engines and Kitchens 1.0.0.
  </Card>
</CardGroup>

## Help

<CardGroup cols={3}>
  <Card title="FAQ" icon="circle-question" href="/resources/faq">
    Keys, fulfillment time, refunds, chains, Solana, Sauce, deposit addresses, agents.
  </Card>

  <Card title="Security and audits" icon="shield-check" href="/resources/security">
    Routes and Sauce security properties, the Cantina portfolio, key handling, reporting.
  </Card>

  <Card title="Support and community" icon="life-ring" href="/resources/support">
    Discord, contact addresses, public repositories, social channels.
  </Card>
</CardGroup>

## Elsewhere in the docs

| Looking for | Go to |
| - | - |
| Endpoint-by-endpoint contract | [API reference](/api-reference/introduction) |
| Every export of the Sauce packages | [SDK reference](/sdk-reference/sauce/overview) |
| Working guides and complete programs | [Cookbook](/cookbook/overview) |
| Agent skills, MCP server, llms.txt | [Build with AI agents](/get-started/build-with-agents) |
| Audit reports and bounty information | [Cantina portfolio](https://cantina.xyz/portfolio/f4ef1cd6-860e-4f58-82de-09751baea324) |