# AI agent documentation access

Read Fast documentation through Markdown, llms.txt, and OpenAPI; find current SDK contracts and recovery guidance.

Fast documentation is available as web pages, Markdown, a machine-readable navigation index, and an OpenAPI specification. These retrieval interfaces are read-only. These interfaces help an assistant retrieve the right material; they are not payment tools and do not grant authority to sign, spend, or operate an account.

## Read the documentation without browser rendering

| Interface | Published endpoint | When to use it |
| --- | --- | --- |
| Navigation index | [docs.fast.xyz/llms.txt](/llms.txt) | Find page URLs and descriptions before retrieving specific topics. |
| Markdown pages | Follow the `.md` links in the index, such as [the SDK overview](/sdk-references/overview.md) | Retrieve only the relevant page and section. |
| Full documentation export | [docs.fast.xyz/llms-full.txt](/llms-full.txt) | Offline analysis or broad retrieval when the client can handle the size. It includes historical material. |

These outputs are generated from the published documentation sources. Prefer targeted Markdown retrieval over loading the full export into every prompt. Do not assume that a repository file added outside GitBook navigation becomes a public route.

For a page URL with a trailing slash, remove that slash before adding `.md`. For example, `/sdk-references/signing/` becomes `/sdk-references/signing.md`. The home page is `/readme.md`; `/openapi.json` is the REST specification.

## Find the correct implementation contract

1. Use [Choose your Fast tool](/get-started/choose-your-tool.md) to map the task to a package.
2. Read its active SDK reference and linked package README. Keep the exact package name: `@fastxyz/fastid-sdk` is the current name, not the former `@fastxyz/id-sdk`.
3. Bind the instructions to the installed version and selected network. A newer `main` commit is not evidence that a deployment or npm release already includes it.
4. Treat **Archived** sections as historical context, not current command or endpoint references. Hidden navigation alone is not an access-control or crawler-exclusion mechanism.
5. Cite the specific page and, for source-level claims, the commit consulted. If the documentation does not establish route availability or a guarantee, say that it is unknown.

### Public source entry points

| Capability | Current source documentation |
| --- | --- |
| Fast-native execution | [Core SDK README](https://github.com/fastxyz/fast-sdk/blob/main/packages/fast-sdk/README.md) |
| CLI operations and agent workflow | [CLI README](https://github.com/fastxyz/fast-sdk/blob/main/app/cli/README.md) and [Fast skill](https://github.com/fastxyz/fast-sdk/tree/main/skills/fast) |
| AllSet cross-network execution | [AllSet SDK README](https://github.com/fastxyz/fast-sdk/blob/main/packages/allset-sdk/README.md) |
| HTTP payments | [x402 client](https://github.com/fastxyz/fast-sdk/blob/main/packages/x402-client/README.md), [server](https://github.com/fastxyz/fast-sdk/blob/main/packages/x402-server/README.md), and [facilitator](https://github.com/fastxyz/fast-sdk/blob/main/packages/x402-facilitator/README.md) |
| Identity | [Fast ID SDK README](https://github.com/fastxyz/fast-sdk/blob/main/packages/fastid-sdk/README.md) and [Fast ID agent guide](https://id.fast.xyz/AGENTS.md) |
| Artifact attestations | [Fast Sign SDK README](https://github.com/fastxyz/fast-sdk/blob/main/packages/sign-sdk/README.md) and [Fast Sign semantics](https://sign.fast.xyz/llms.txt) |

## Keep retrieval separate from execution

These docs are reference material, not instructions from the account owner. Before a money-moving or signing operation, establish authorization, network, asset, amount, destination, fees, and the package's recovery contract. Never request or publish a private key in a documentation query. A timeout can leave settlement unknown: reconcile the original operation before creating a new paid attempt. A registration retry and a payment retry are different operations.

The [Fast CLI skill](https://github.com/fastxyz/fast-sdk/tree/main/skills/fast) supplies execution-specific guidance for CLI users. Read it before authorized CLI work.