generated: '2026-09-19'
method: searched
source: https://github.com/getambr/ambr/blob/master/CHANGELOG.md
docs: https://github.com/getambr/ambr/blob/master/CHANGELOG.md
description: >-
  Ambr keeps a dated CHANGELOG.md in its public repository (getambr/ambr; "follows Keep a Changelog 1.1.0
  and SemVer"). There is no changelog page on ambr.run or getamber.dev (/changelog 404 on both). The
  platform version in the changelog matches the live surface: /api/health and the agent card both report
  0.3.4. A second, older CHANGELOG at site/CHANGELOG.md covers v0.1.0 (2026-04-03) and v0.2.0 (2026-04-08)
  of the site itself. Entries below are the top-level file's release headings with the API-relevant
  highlights; the file is the source of truth.
versioning:
  scheme: SemVer platform releases; REST path /api/v1; contract format URN ricardian-v1
  current: 0.3.4
  current_date: '2026-04-23'
  detail: lifecycle/getamber-dev-lifecycle.yml
  note: >-
    The repository was last pushed 2026-09-05 but the newest changelog heading is 0.3.4 (2026-04-23);
    later changes (e.g. the p2-power-of-attorney template, the public /:id/status validity endpoint and
    the revoke endpoint now on the developers page) are not yet recorded in the changelog.
entries:
- version: 0.3.4
  date: '2026-04-23'
  latest: true
  breaking: []
  additions:
  - Legibility Principle clause added across MCP tool descriptions, the A2A card extensions and llms.txt
  - Public spec page /spec/ricardian-v1 (URN urn:ambr:ricardian-v1, MIT)
  - Extended A2A agent card — platformVersion, releasedAt, apiVersion, additionalInterfaces (MCP + /api/health), pricing.source, compliesWith, implementsSpec, extensions io.ambr.governance
  - server.json static MCP discovery config alongside agent.json
  changes:
  - llms.txt Key Pages expanded (MCP, health, spec, founders); pricing aligned to /api/v1/pricing
- version: 0.3.3
  date: '2026-04-23'
  breaking: []
  additions:
  - Public /status page on ambr.run (7 service dots, cNFT card, 30s refresh)
  - contracts/deployments/base.json with the live AmbrContractNFT address
  changes:
  - /api/health public response now per-service status strings + cnft block, CORS *
  - Contract-generation prompts reframed around eIDAS Art. 26 / UCTA s. 11 / GDPR Art. 5 reference language; "compliant with" wording removed from public copy
  - A2C pricing aligned to $0.20 across a1/a2/a3
- version: 0.3.0
  date: '2026-04-20'
  breaking: []
  additions:
  - MCP x402 payment wiring — paid tools without an API key now return machine-readable x402 payment instructions instead of dead-end JSON-RPC errors
  - Dashboard billing panel; Stripe live integration (Personal/Business plans, credit packs)
- version: 0.2.0
  date: '2026-04-10'
  breaking: []
  additions:
  - Bilateral amendments (proposal -> counterparty accept/reject -> new version with new hash)
  - Paired cNFTs (one per party) for active contracts
  - EU AI Act Article 14 oversight — oversight_threshold_usd on parent delegation contracts
  - Security hardening — MCP discovery caching, debug endpoint admin auth, rate limiter
- version: 0.1.0
  date: '2026-03-23'
  breaking: []
  additions:
  - Initial public release — Ricardian contract engine, 6 templates, Reader Portal, REST API, A2A well-known endpoint + agent card, MCP server (6 tools), x402 middleware, API key tiers, cNFT minting on Base L2