feat(provider/anthropic): Anthropic web search

[axel-rock]

Background

Anthropic just announced the availability of web search in their API. This feature is really exciting to me.

Summary

Added support for what is presented in the documentation.

Verification

I currently just got it to work:

const gen = await generateText({
	model,
	prompt,
	tools: {
		web_search: anthropic.tools.webSearch_20250305({
			max_uses: 2,
		}),
	},
	maxSteps: 3
})

Tasks

• Get the basic feature to work
• Make sure the output from the server is correctly mapped in the SDK response
• Check types and schema validations (some have been done very quickly to get it to work late at night)
• Tests have been added / updated (for bug fixes / features)
• Documentation has been added / updated (for bug fixes / features)
• A patch changeset for relevant packages has been added (for bug fixes / features - run pnpm changeset in the project root)
• Formatting issues have been fixed (run pnpm prettier-fix in the project root)

Disclaimer

I've only contributed to documentation before, I hope this will help. And I'd also understand if it doesn't, I really don't mind if this gets closed for any reason.

I don't know how to write tests my self, must admit these have been wrote by Gemini.

[axel-rock]

I am not sure how to run the documentation website locally, and check how this table looks with an extra column added to it:

[samdenty]

I am not sure how to run the documentation website locally, and check how this table looks with an extra column added to it:

I think we have another repo that we have to sync it to, I'm not too sure on the process here cc @lgrammel

[samdenty]

maybe we could add a JSDoc comment pointing to https://docs.anthropic.com/en/docs/build-with-claude/tool-use/web-search-tool#errors

[samdenty]

also I know we like to add examples to make it easy to try out something (helps with future testing as well), maybe it would make sense to add one in examples/ai-core?

[axel-rock]

also I know we like to add examples to make it easy to try out something (helps with future testing as well), maybe it would make sense to add one in examples/ai-core?

Thank you for your quick feedback, I'll look into into it tomorrow

[axel-rock]

also I know we like to add examples to make it easy to try out something (helps with future testing as well), maybe it would make sense to add one in examples/ai-core?

I added that part, it works pnpm tsx src/tools/anthropic-web-search.ts from the examples folder