Changes and Releases

Updates on Giant Swarm workload cluster releases, apps, UI improvements and documentation changes.

• Sep 17, 2026 Developer Portal backstage v2.21.3

  Changed

  • (deps) Update dependency @assistant-ui/react-markdown to v0.14.14 in #2436 by @renovate[bot]

  Full Changelog: https://github.com/giantswarm/backstage/compare/v2.21.2...v2.21.3

• Sep 17, 2026 Developer Portal backstage v2.21.2

  Fixed

  • (repositories) The planned pull request reads as two lines in the dry run (Text is inline; the lines ran together) in #2435 by @teemow

  Full Changelog: https://github.com/giantswarm/backstage/compare/v2.21.1...v2.21.2

• Sep 17, 2026 Developer Portal backstage v2.21.1

  Changed

  • (deps) Update ai-sdk packages in #2431 by @renovate[bot]

  Full Changelog: https://github.com/giantswarm/backstage/compare/v2.21.0...v2.21.1

• Sep 17, 2026 AI Agents muster v5.27.1

  Fixed

  • (oauth) Live sessions follow an MCPServer’s auth configuration change; a backend 401 answers auth_required with the sign-in; auth logout –server signs out of one server in #1279 by @teemow

  Full Changelog: https://github.com/giantswarm/muster/compare/v5.27.0...v5.27.1

• Sep 17, 2026 Developer Portal backstage v2.21.0

  Added

  • (repositories) The Create form describes create → scaffold → pull request as the person, offers Generate CircleCI config (gen.ci.generate) with the refusal’s fix as one click, and its dry run carries the reason in #2433 by @teemow

  Full Changelog: https://github.com/giantswarm/backstage/compare/v2.20.1...v2.21.0

• Sep 17, 2026 Developer Portal backstage v2.20.1

  Fixed

  • (agent-platform) Try it sends the model id the ModelConfig sends, not the serving object’s name in #2432 by @teemow

  Full Changelog: https://github.com/giantswarm/backstage/compare/v2.20.0...v2.20.1

• Sep 17, 2026 Developer Portal backstage v2.20.0

  Added

  • (repositories) The Repositories page made usable — tiles, orphan score and decision tracking gone; archived hidden by default; every filter working; the portal’s own UI; the expanded row redesigned in #2429 by @teemow

  Full Changelog: https://github.com/giantswarm/backstage/compare/v2.19.0...v2.20.0

• Sep 17, 2026 AI Agents agent-platform v4.30.2

  Fixed

  • (connectivity) Presets quote their JSON arguments for the llm-d runtime’s shell re-parse; the chart refuses an argument the shell would re-split in #533 by @teemow

  Full Changelog: https://github.com/giantswarm/agent-platform/compare/v4.30.1...v4.30.2

• Sep 17, 2026 Developer Portal backstage v2.19.0

  Added

  • (agent-platform) Models pages call model-manager through muster as the signed-in person, no REST proxy in #2430 by @teemow

  Full Changelog: https://github.com/giantswarm/backstage/compare/v2.18.1...v2.19.0

• Sep 17, 2026 AI Agents klaus-oci v0.0.75

  Fixed

  • (nancy) Remediate nancy findings in #84 by @heraldbot[bot]

  Full Changelog: https://github.com/giantswarm/klaus-oci/compare/v0.0.74...v0.0.75

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