hermes-agent/website/docs
Teknium 5854aad8b5
feat(gateway): durable delivery-obligation ledger for final responses (#67181)
A final response generated but not confirmed-delivered was the one
artifact the gateway could lose without a trace: crash or planned
restart between finalize and platform ACK dropped it silently, and the
resume path re-ran the whole turn at full cost (#58818 P1, #41696,
#63695's gateway half).

gateway/delivery_ledger.py records each outbound final response in
state.db (same conventions as the async-delegation ledger: WAL, owner
pid + process-start-time liveness, bounded retention):

  pending -> attempting -> delivered | failed
  startup sweep on dead-owner rows -> redeliver | abandoned

Contract (the lessons from the closed delivery-outbox attempt #61790):
- obligation recorded BEFORE the first send attempt; cleared only on
  SendResult.success (destination acceptance, #51184)
- ambiguity is labeled, never silently retried: rows that were mid-send
  when the process died redeliver with a visible '♻️ Recovered reply —
  may be a duplicate' prefix (honest at-least-once)
- stable ids from session_key + inbound message id + content, so
  distinct threads/topics can never collide
- poison rows bounded: 3 attempts / 24h freshness -> abandoned; claim
  atomically re-stamps ownership so racing sweeps can't double-claim
- redelivery clears resume_pending for the session so the resume path
  never re-runs a turn whose answer the ledger already holds
- best-effort everywhere: ledger failure can never block or delay a send
- slash-command/ephemeral/empty responses are not recorded; cron and
  proactive delivery stay on DeliveryRouter (separate subsystem)

Config: gateway.delivery_ledger (default on; no version bump needed).

Validation: 30 ledger+producer tests; 352 blast-radius gateway tests
green; cross-process E2E (record in process A, kill it mid-send, claim
+ marker + redeliver in a fresh process B against the same state.db).
2026-07-19 00:45:32 -07:00
..
developer-guide docs(desktop): document the desktop plugin SDK (@hermes/plugin-sdk) (#67301) 2026-07-19 04:02:17 +00:00
getting-started fix(update): consolidate pre-update backups into one gated mechanism (#65754) 2026-07-16 08:47:25 -07:00
guides docs(delegation): align guidance with current contract 2026-07-17 15:55:49 -07:00
integrations docs: fix 25 documentation/code inconsistencies (audit round 3) 2026-07-16 04:47:40 -07:00
reference fix(gateway): recover Discord websocket and event-loop stalls 2026-07-18 20:01:55 +05:30
user-guide feat(gateway): durable delivery-obligation ledger for final responses (#67181) 2026-07-19 00:45:32 -07:00
index.mdx feat(docs): clarify platform support 2026-06-26 11:37:56 -07:00
user-stories.mdx docs(website): add User Stories and Use Cases collage page (#18282) 2026-04-30 23:56:59 -07:00