Runtime Service API Versioning

Stability Labels

• stable: backward-compatible within the current major version.
• experimental: can change in minor versions; verify release notes before upgrades.

These two labels are the whole vocabulary. The same list is written out again as the chapter's Stability Legend, and scripts/check-runtime-services-index.mjs holds both legends — and every page's Stability bullet — to one definition, so the two lists cannot drift apart. Adding a label means extending that definition in the same change that says what it promises, in both places.

Breaking-Change Tracking

When a runtime service API changes in a breaking way:

1. Update the relevant page in this chapter.
2. Add a changeset entry under .changeset/ — changesets generates each package's CHANGELOG.md from these entries. (The root CHANGELOG.md is retained for historical entries and is not hand-edited.)
3. Record migration guidance and affected methods in the per-major release page under content/docs/releases/.

Current Matrix