Like, it's not clear to me what problem it solves.
It's described as "The complete SDK for Chat, Commenting, and Notifications" yet I've read the entire readme and it isn't clear which languages it has client-SDKs for, if any.
If my boss came to me and said, "Can you evaluate Cord for a chat and notification back-end" I'd return a quick message ruling it out on the basis of there being no documentation, no example integrations, no obvious client SDK packages, etc.
It's also hardly zero-friction just getting it running. It needs both Node/NPM and docker.
Why? Either ship me the NPM packages, or point me to a docker command I can run. If it's containerised, why does it need NPM? If it's shipped as NPM/source, why does it insist I deploy with docker?
Show me some simple code examples so I can see how easy it is to get a chat client running, don't give "broken" links to docs and APIs that would only work if I'm already running your software, I'm unlikely to get that far without browsing the API and docs.