Carmine Cella

What a request costs, what each error means, and where to look when something is down.

Billing, errors and status

What each call costs, when you are charged, and when you are refunded.

Every error code the API returns, what it means, and whether to retry.

Where to look when the API misbehaves, and how to check it from your own monitoring.

Scrape one page, batch many URLs, map or crawl a whole site, and use DataFuel from AI agents.

Fetch one URL with POST /task, choose the output format, extract only what you need, and know when to switch on the browser.

Queue many known URLs in one job, poll its progress and collect the per-URL results.

Get a deduplicated list of a site's URLs for one credit, before you decide what to scrape.

Follow links from a start URL, scrape every page, and keep the cost under control with limits and path filters.

Every result carries metadata next to the content. Check it before you trust the data.

Resend a request after a dropped connection without being charged twice.

Connect Claude Code, Cursor or any MCP client to the DataFuel MCP server, or hand an agent the skill file.

Get an API key, make a first request and pick the right endpoint.

Get an API key, check your balance and scrape one page in under five minutes.

How the X-API-Key header works, where keys come from, how to rotate one, and what your account limits are.

Task, job, map or crawl. Pick by the shape of the work, not by the size of the site.