overview changedrelease-notes/overview
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1515### September 3, 2026
1616
1717* Version 1.30.0 of the `ant` CLI adds `ant apply`, which creates and updates agents, environments, skills, memory stores, and deployments from files in your repository. Describe each resource in a file, run `ant apply`, and approve the plan it prints. Commit the `claude-lock.json` lockfile it writes so that later runs, on your machine or in CI, update the same resources instead of creating new ones. See [Manage resources as code with ant apply](https://platform.claude.com/docs/en/cli-sdks-libraries/cli/apply).
18* [Per-message effort](https://platform.claude.com/docs/en/build-with-claude/effort#change-effort-mid-conversation-beta) changes, in beta, are also available on [Google Cloud](https://platform.claude.com/docs/en/build-with-claude/claude-on-vertex-ai) for Claude Fable 5.1, Claude Mythos 5.1, and Claude Opus 5, with the same `mid-conversation-output-config-2026-07-01` beta header.
1819
1920### September 1, 2026
2021
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