2026-07-27 Messaging Weekly

Logos Delivery

Messaging API — General Availability

• [Deliverable] Reliability and scale validation with DST

  • achieved:
    • Create a separate binary to allow DST test messaging-client API
    • chore: adjust artifact builds and uploads to contain logosdeliverynode app
  • next:
    • feat(compose): add logosdeliverynode docker-compose stack

• [Deliverable] Test suite for Messaging API

  • achieved:
    • Add in-repo API/e2e test suite (tests-e2e)
    • ci: run docker subset of the API/e2e wrapper tests
  • next:
    • test(e2e): port remaining wrapper tests from the interop repo

• [Deliverable] Create Rate Limit Manager

  • achieved:
    • Move rate-limit-manager to messaging client layer
  • next:
    • feat: enforce the per-epoch rate limit at the send service (RLN-sourced)
    • feat: attach and refresh RLN proofs in the send service (Stream B)

Reliable Channel API — Beta

• Reliable Channel API stabilization and bug fixes
  • achieved:
    • fix(channels): default channels to unencrypted so messages flow
    • fix: report the wire sender’s id in channel_message_received
    • E2E tests: RC05/RC06 Reliable Channel test variants
  • next:
    • fix: stop emitting receive events after channel_close

Support QUIC Transport in Logos Delivery

• [Deliverable] Trial QUIC
  • achieved:
    • fix: dial QUIC before TCP regardless of address list order
  • next:
    • chore: bump nim-lsquic v0.5.1 -> v0.5.6
    • chore: bump libp2p v2.2.0
    • feat: DST scale validation of QUIC transport

Fleet Stability

• [Deliverable] Fleet monitoring dashboards for Logos fleets

  • achieved:
    • group and simplify sonda metrics
    • fix: bound the error label of failed_store_queries
    • refactor(metrics): give every metric a logos_delivery_ prefix
  • next:
    • chore(metrics): sync dashboards from Grafana
    • Update infra-logos dashboards and alerts to the new logos_delivery_ metric prefix

• [Deliverable] Resolve known fleet stability issues

  • next:
    • Bump nim-libp2p to v2.2.0 and replace nat_traversal with libp2p NATConfig

Logos Chat

Chat — Beta

• [Deliverable] Implement full identity model

  • achieved:
    • feat: publish key bundles and accounts via logos delivery - https://github.com/logos-messaging/libchat/pull/184

• [Deliverable] Stabilize and polish API

  • achieved:
    • List Participants in DirectV1 - https://github.com/logos-messaging/libchat/pull/189
    • Enable HNDL protections - https://github.com/logos-messaging/libchat/pull/193

Logos Core

Logos Core Integration — Phase 2

• [Deliverable] Add Reliable Channel API to Logos Core Delivery module
  • achieved:
    • [delivery] feat: add Reliable Channels API support
    • [delivery] feat: expose Store queries via storeQuery
    • [delivery] fix: store node data under the module’s per-instance path
  • next:
    • [delivery] Release logos-delivery-module v0.2.0

Maintenance

• achieved:
  • nim-ffi:
    • Integrate the 0.2 line into master: {.ffi.} shape router, {.ffiExport.}, context recycling
    • feat(codegen): {.ffiConst.} constants and {.ffi.} enums for C/C++/Rust
    • feat(ffi): {.ffiStatic.} for context-independent procs
    • feat(c): CBOR-free transport for non-scalar abi = c procs
    • fix: seq[byte] rides as a CBOR byte string on every backend
  • chore: bump nim-brokers to 3.3.0 and add nim-brokers skill
• next:
  • chore(deps)!: bump nim-ffi to 0.3.0 (per-listener event ABI)
  • chore: replace minprotobuf with nim-protobuf-serialization
  • nocopy message path PoC: 1/3 perf harness, 2/3 WakuMessage as ref object, 3/3 WakuEnvelope decode once
  • ci: pull and publish the Logos Attic cache in nix builds