[Agents] Document AI SDK v6 and v7 support

[cjol]

Summary

This PR documents dual AI SDK v6 and v7 support across the Agents SDK packages. It adds compatible peer-major guidance to Think and an Agents changelog entry.

Related: cloudflare/agents#1922

Screenshots (optional)

Documentation checklist

• Is there a changelog entry (guidelines)? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to RSS feeds, the Discord, and X.
• The change adheres to the documentation style guide.

[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/product-owners
/src/content/docs/agents/	@irvinebroque, @rita3ko, @elithrar, @cloudflare/product-owners, @cloudflare/ai-agents, @cloudflare/dev-plat-leads

[github-actions]

Preview URL: https://554c83bb.preview.developers.cloudflare.com
Preview Branch URL: https://docs-think-ai-sdk-v6-v7-compat.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/changelog/post/2026-07-23-ai-sdk-v6-v7-support/	https://docs-think-ai-sdk-v6-v7-compat.preview.developers.cloudflare.com/changelog/post/2026-07-23-ai-sdk-v6-v7-support/
https://developers.cloudflare.com/agents/harnesses/think/	https://docs-think-ai-sdk-v6-v7-compat.preview.developers.cloudflare.com/agents/harnesses/think/

[cloudflare-docs-bot]

Review

⚠️ 1 warning found in commit 554c83b.

👉 Fix in your agent 👈

Fix the following review findings in PR #32245 (https://github.com/cloudflare/cloudflare-docs/pull/32245).

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---

## Code Review

### Warnings (1)

#### CR-6ea664fa4a89 · Incomplete install command
- **File:** `src/content/docs/agents/harnesses/think/index.mdx` line 35
- **Issue:** The PackageManagers command lists `@cloudflare/think @cloudflare/ai-chat agents ai @cloudflare/shell zod workers-ai-provider` but does not include `@ai-sdk/react`, while line 37 instructs users to keep `ai` and `@ai-sdk/react` on matching major versions. A reader running the shown command will not install the `@ai-sdk/react` package that the compatibility guidance says is required.
- **Fix:** Add `@ai-sdk/react` to the install command with an appropriate version constraint, or split into separate v6/v7 PackageManagers examples showing the exact compatible package combinations.

Code Review

This code review is in beta and may not always be helpful — use your judgment.

Warnings (1)

File

Issue

agents/harnesses/think/index.mdx line 35

Incomplete install command — The PackageManagers command lists @cloudflare/think @cloudflare/ai-chat agents ai @cloudflare/shell zod workers-ai-provider but does not include @ai-sdk/react, while line 37 instructs users to keep ai and @ai-sdk/react on matching major versions. A reader running the shown command will not install the @ai-sdk/react package that the compatibility guidance says is required. Fix: Add @ai-sdk/react to the install command with an appropriate version constraint, or split into separate v6/v7 PackageManagers examples showing the exact compatible package combinations.

Conventions

_{No convention issues found.}

Style Guide Review

_{No style-guide issues found.}

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