> For the complete documentation index, see [llms.txt](https://docs.stacksync.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.stacksync.com/two-way-sync/api-proxy.md).

# API Proxy

- [Salesforce API Proxy Guide](https://docs.stacksync.com/two-way-sync/api-proxy/salesforce.md): The easiest Salesforce API proxy you’ll ever use. Perform real-time operations without connected apps, tokens, or complex Salesforce setup.
- [HubSpot](https://docs.stacksync.com/two-way-sync/api-proxy/hubspot.md): The simplest HubSpot API you have ever seen!
- [Attio](https://docs.stacksync.com/two-way-sync/api-proxy/attio.md): The simplest Attio API you have ever seen!
- [Pipedrive](https://docs.stacksync.com/two-way-sync/api-proxy/pipedrive.md): The simplest Pipedrive API you have ever seen!
- [Airtable API Proxy Overview](https://docs.stacksync.com/two-way-sync/api-proxy/airtable.md): Overview of the Airtable API proxy and how Stacksync enables secure, simplified access to Airtable data.