[Agents] Changelog: Agents SDK v0.8.0

[whoiskatrin]

Summary

• Adds changelog entry for Agents SDK v0.8.0 release (cloudflare/agents#1140)

Changes covered

• Readable state property on useAgent and AgentClient
• Idempotent schedule() — cron by default, opt-in for delayed/date types
• Typed AgentClient with call inference and stub proxy
• Zod 4 required, ai runtime dependency removed from core
• @cloudflare/ai-chat turn serialization and duplicate message fixes
• keepAlive() / keepAliveWhile() promoted out of experimental
• @cloudflare/codemode TanStack AI integration

[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/content/changelog/	@cloudflare/pm-changelogs, @cloudflare/pcx-technical-writing

[threepointone]

couple of removals, but otherwise lgtm

[github-actions]

Preview URL: https://be945ccf.preview.developers.cloudflare.com
Preview Branch URL: https://changelog-agents-sdk-v0-8-0.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/changelog/2026-03-23-agents-sdk-v080/	https://changelog-agents-sdk-v0-8-0.preview.developers.cloudflare.com/changelog/2026-03-23-agents-sdk-v080/

[whoiskatrin]

/bonk fix the build

[ask-bonk]

Addressing threepointone's feedback with specific suggestions:

[ask-bonk]

Posted 2 review suggestions on PR #29216:

1. Addressed threepointone's feedback: Removed the section header "## Zod 4 required, ai runtime dependency removed" and replaced it with just the Zod requirement line (since the ai runtime removal isn't a real breaking change).

2. Style guide compliance: Changed the npm install command to use the PackageManagers component instead of a bare code fence.

The changelog is well-structured otherwise — proper frontmatter, correct TypeScriptExample usage throughout, and no MDX syntax issues.

github run