generated: '2026-09-19'
method: searched
source: https://github.com/Vortx-AI/emem/blob/main/CHANGELOG.md
description: >-
  Structured capture of emem's dated changelog. The provider keeps a Keep a Changelog file in
  the source repository with semantic versions; GitHub releases are cut per version, the npm
  and PyPI clients and the MCP registry entry are versioned in lock-step (2.4.0 on 2026-09-09),
  and /v1/deprecations serves the machine-readable deprecation table. Only the recent window is
  recorded here; the live file is the source of truth (22 versions back to 0.0.2).
docs: https://github.com/Vortx-AI/emem/blob/main/CHANGELOG.md
versioning:
  scheme: semver (Keep a Changelog format)
  current: 2.4.0
  current_dated: '2026-09-07'
  release_tag: v2.4.0 (GitHub release 2026-09-09)
  deprecations_endpoint: https://emem.dev/v1/deprecations
  detail: lifecycle/emem-dev-lifecycle.yml
  cadence: roughly one minor release every one to two weeks since 1.0.0 (2026-07-09)
entries:
- version: 2.4.0
  date: '2026-09-07'
  latest: true
  sections: {Added: 16, Changed: 18}
  breaking: []
  highlights:
  - Federation a stranger can join - docker-compose.yml one-command node, scripts/verify_node.py join-bar check, witness job and DNS _emem-node TXT verification
  - GET /.well-known/did.json (did:web document) and GET /.well-known/emem-agents.json (organisation vouching document)
  - cid_v1 beside fact_cid so IPFS / Filecoin / ATProto tooling can address a fact without rehashing
  - A2A protocolVersion corrected to a released version (it had claimed 1.2.0, which A2A never shipped)
  - Fact index moved from sled to redb; flush coalescing and write watchdog
- version: 2.3.0
  date: '2026-08-26'
  sections: {Added: 13, Changed: 9, Fixed: 9, Removed: 1}
  breaking: []
  highlights:
  - Write enlistment ladder T0-T5; reads stay free at every rung
  - Perception plane so a place question is not answered from orbit while a camera is watching the street
  - Google Analytics, the consent banner and the emem_consent cookie removed
  - Fixed - a write that could not be persisted reported success; consistency proof folded subtree roots
- version: 2.2.0
  date: '2026-08-18'
  sections: {Added: 12, Changed: 4, Security: 1, Fixed: 15}
  breaking: []
  highlights:
  - Agent surface usable without a human deciding which document to read (intent registry, capability manifest)
  - Security - h2 updated to 0.4.16 for RUSTSEC-2026-0258
  - Fixed - "every message signed" overclaim corrected (499 of 545 channel notes carried a signature)
- version: 2.1.0
  date: '2026-08-10'
  sections: {Added: 1, Changed: 3, Fixed: 5}
  breaking: []
  highlights:
  - Nine token shapes consolidated; FactCid schema fixed to accept the fact_cids the responder serves
- version: 2.0.0
  date: '2026-08-05'
  sections: {BREAKING: 5}
  breaking:
  - Receipt preimage changed (v2 binds the inclusion proof); a verifier hardcoded to v1 rejects every receipt signed from here on - shipped as a major for that reason. v0/v1 receipts still verify under their own rules.
  highlights:
  - Polygon aggregates made order-independent; MCP resource templates that refused reads fixed
- version: 1.4.0
  date: '2026-07-31'
  breaking: []
- version: 1.0.0
  date: '2026-07-09'
  breaking: []
  highlights:
  - First 1.x; wire format, receipt preimage and address space declared settled for the 1.x line