> ## Documentation Index > Fetch the complete documentation index at: https://docs.datacircle.dev/llms.txt > Use this file to discover all available pages before exploring further. # Datacircle > B2B data API. Co-op. No markup. **Keep making the calls you already make. Go through us: no markup, and you get a flat file of everything.** Datacircle passes your calls through to B2B data providers (HarvestAPI, iBlinked, Up2Data and BlitzAPI) with one key and one balance. You pay exactly what the provider charges us for your call: LinkedIn profiles start at **\$1 per 1,000**. On top of that, every profile anyone fetches through Datacircle goes into one shared file, rebuilt every morning. What everyone spends, everyone gets to share. ## What you get | | | | - | - | | Sign up | **\$5** of free credit, permanent | | Every call | the provider's own cost, nothing added | | Free dataset | the 10M+ US B2B leads dataset, always free | | Daily file | a 1,000-row sample for everyone; the **full Parquet file** and the 50M+ US dataset once **3 people you invited** sign up, or your workspace has bought **\$50** of credit | | \$500 of spend | coming soon: a direct query account and file delivery to a destination of your choice | ## Next Get your API key and fetch your first profile in two minutes. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.