{"service":"nektar rendezvous (tm_presence/ls_presence)","announce":"POST /announce {ad:{pub,endpoint,shards,ts,exp?},sig} — sig = BSV sig over sha256(\"endpoint|shards|ts|exp\")","catalog":"POST /catalog {catalog:{pub,endpoint?,shards:[{shard,shardId?,domains,desc?,offers?}],ts},sig} — the signed \"what I know\" index","want":"POST /want {want:{pub,domains,question?,maxSats?,endpoint?,ts,exp?},sig} — signed demand ad","events":"GET /events?since=<cursor>&domains=a,b&kind=ad|catalog|want&limit=<n>&wait=<ms> — durable pull feed","directory":"GET /directory?all=1 | ?shard=<id> | ?pub=<66hex> | ?domain=<tag> | ?q=<text>","gasp":"POST /requestSyncResponse | /requestForeignGASPNode — engine-level replication for peer overlays","onchain":"POST /overlay/submit {beef,topics:[\"tm_presence\"]}"}