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Document composition function capability advertisement #1041

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Description

@negz

What's Missing?

Crossplane 2.2 adds capability advertisement for composition functions.

Functions have no way to know which protocol features Crossplane supports - when a function uses a newer feature with an older Crossplane, the request is silently ignored. Crossplane now populates meta.capabilities with all supported features. Functions can check for a capability before relying on a feature, and fall back gracefully when absent.

See crossplane/crossplane#7022 for details.

Activity

  1. self-assigned this
    on Jan 17, 2026
  2. added 2 commits that reference this issue on Feb 23, 2026
    49c2d7c
    c755c14
  3. moved this from Backlog to In Review in Crossplane Roadmapon Mar 5, 2026
  4. added a commit that references this issue on May 24, 2026
    e0a1722
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