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

# New watermarking and cwt built-in modules

A built-in  [watermarking](doc:watermarking) module is now available to use in your EdgeWorkers functions. You can use it to watermark Over-The-Top (OTT) content delivered in an Adaptive Bitrate (ABR) format. This watermarking solution currently doesn’t support interoperability with partial object caching. Please reach out to your account team if you require partial object caching.

We also added the [cwt](doc:cwt) module that lets you create, sign, and verify CWT tokens. The [watermarking](doc:watermarking) module supports cwt for token verification.