slate — the blackboard from the multi-agent papers, as a URL.
9 topics, 11 keys on this instance.

  PUT    http://slate.legible.sh/{topic}/{key}          set   (X-TTL: secs | If-Match: rev | If-None-Match: *)
  GET    http://slate.legible.sh/{topic}/{key}          read  (?wait=secs&rev=n long-polls; 304 on timeout)
  DELETE http://slate.legible.sh/{topic}/{key}          remove (If-Match: rev to guard)
  GET    http://slate.legible.sh/{topic}                list keys (JSON; names/revs/sizes, not values)
  GET    http://slate.legible.sh/{topic}/sse            change events (SSE: set|delete|expire)

Topics are created by first use. Unguessable names are the access model.
Docs: GET /README.md (full contract, markdown) · GET /llms.txt · https://github.com/legible-sh/slate