> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://akamai.ferndocs.com/edge-workers/esi-support-for-edgeworkers/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://akamai.ferndocs.com/_mcp/server.

# ESI support on the enhanced TLS network

You can now configure an EdgeWorkers function to execute via an [ESI (Edge Side Includes)](https://techdocs.akamai.com/property-mgr/docs/esi-edge-side-includes) fragment request on the enhanced TLS network. 

To execute EdgeWorkers from an ESI fragment, add the  `PMUSER_ENABLE_EW_ESI_FRAG` [user-defined variable](https://techdocs.akamai.com/property-mgr/docs/user-defined-vars) to your rule and set it to `true`. The name of the variable must be UPPERCASE.

> 📘 
> 
> The user-defined variable is not required if you are using the Standard TLS delivery method. ESI is supported on the standard TLS network.