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IntroductionWhy ExpandQuickstartAuthenticationConnect your agent (MCP)

Products

OverviewFetching a URLBatched Fetch
API reference

SDKs & tools

TypeScript SDK
MCP tools & resourcesDocs for agents

Reference

API referenceErrors & retriesPricing & UsageLimitsConcurrency tiersFAQ
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Get started

IntroductionWhy ExpandQuickstartAuthenticationConnect your agent (MCP)

Products

OverviewFetching a URLBatched Fetch
API reference

SDKs & tools

TypeScript SDK
MCP tools & resourcesDocs for agents

Reference

API referenceErrors & retriesPricing & UsageLimitsConcurrency tiersFAQ

Get started with Expand

Send a page URL and get Markdown with tables and icons intact, plus the page's hidden JSON as State JSON. Each Markdown line links to its source. Set up your agent, or run your first Fetch from the CLI, the TypeScript SDK, or the API.

Expand Fetch is an API for agents that read the web. You send a URL. Expand opens it in a real browser, and our model Iris looks at the rendered page instead of guessing from the HTML. You get the page back as Markdown with tables, icons, and layout intact, plus the page's hidden JSON as State JSON. Every line links back to the spot on the page it came from, so you always know what your agent read.

Why Expand explains what ordinary Markdown tools drop, and how Expand keeps it.

One-prompt setup

Paste it into your coding agent. It installs Expand and connects it to every agent on your machine.

Set it up by hand
fxClaude CodeCodexCursorOpenCodedetected automatically

Prefer code? The Quickstart runs your first Fetch from the CLI, the TypeScript SDK, or the API.

Building blocks

Fetch is one API, and everything else runs on it. Iris and X-Ray work on browser pages. The Wayback Machine keeps a replayable Snapshot of each browser page you fetch, and Highlights finds the snippets in a page that answer a question. Crawl runs Fetch over a whole site, and WebSync keeps running it to catch changes.

Expand Fetch
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On This Page

Building blocks
Send a URL. Get Markdown, plus State JSON and a replayable Snapshot for browser pages.
IrisThe vision model for browser pages. It writes the page as clean Markdown.X-RayThe data behind a browser page, as State JSON next to the Markdown.Wayback MachineSave a browser page as a Snapshot you can replay, cite, and read again.HighlightsRanked, cited snippets that answer a question about a page.

Built on Fetch

CrawlCapture the pages Crawl finds on a site.WebSyncA crawl that keeps going and streams each change.