2026-08-17 Messaging Weekly

Highlights

• Logos Delivery:
  • logos.dev preset moved to cluster-id 3 to allow testing potentially breaking changes without affecting Testnet
  • large e2e test push — wrapper tests, channel delivery tests and orphaned suites ported and revived
• Logos Integrations:
  • delivery module journey published at v0.2.0 with the Reliable Channel API
  • chat-module procedure updated to v0.2.2 with group conversations

Logos Delivery

Messaging API — General Availability

• [Deliverable] Reliability and scale validation with DST

  • achieved:
    • feat(compose): add logosdeliverynode docker-compose stack
  • next:
    • chore(docker): rename compose folder and fix review follow-ups from #4057

• [Deliverable] Test suite for Messaging API

  • achieved:
    • test(e2e): port remaining wrapper tests from the interop repo
    • test(e2e): port the channel delivery tests
  • next:
    • test: revive three orphaned sharding suites
    • test: revive eight more orphaned suites
    • ci(e2e): point the S11/S25 store peers at the built image too

• [Deliverable] Integrate Mix into Messaging API

  • next:
    • feat: logos testnetv02 mix

Reliable Channel API — Beta

• Reliable Channel API stabilization and testing

  • achieved:
    • Channel API RC10-RC12 interop tests
    • Channel API RC13 interop tests
  • next:
    • bug: re-opening a closed Reliable Channel crashes the node

• [Deliverable] Provide documentation on the Reliable Channel API

  • achieved:
    • docs: add the Reliable Channel API to the delivery module journey

RLN on Logos Blockchain

• [Deliverable] Implement pluggable RLN membership interface
  • next:
    • Add RLN api folder structure and consumer-facing interface

Fleet Stability

• [Deliverable] Resolve known fleet stability issues
  • achieved:
    • fix(networks): move logos.dev preset to cluster-id 3 — delivery-module builds were isolated from the live fleet after it migrated (#4114)
  • next:
    • fix: partition messages_lookup to stop the index bloat
    • chore(archive): deprecate capacity retention policy

Logos Chat

Chat — Beta

• [Deliverable] Stabilize and polish API
  • achieved:
    • Add Delivery notifications - https://github.com/logos-messaging/libchat/pull/204
    • Update ChatCLI to support InboxV2 - https://github.com/logos-messaging/libchat/pull/205
    • chore: add cargo-deny for supply-chain, license, and advisory linting - https://github.com/logos-messaging/libchat/pull/215

Logos Core

Logos Core Integration — Phase 3

• Logos Core modules — packaging and documentation
  • achieved:
    • [chat] docs: update to chat_module v0.2.2
    • [chat] docs: add group conversations to the chat-module procedure

Maintenance

• achieved:
  • ci: pull and publish the Logos Attic cache in nix builds
  • fix(ci): nightly pre-release and release-assets fixes
  • fix(ffi): event listeners lifetime
• next:
  • Rework logging to be useful
  • fix(ci): daily build times out
  • FFI C bindings are never generated: genBindings() writes nothing without —experimental:vmopsDanger
  • mobile and desktop platform support:
    • fix: android support,
    • fix: ios support
    • feat(nix): cross-compile for Windows