Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
One change · api

define-tools changed

agents-and-tools/tool-use/define-tools

Nearest release: v2.1.267, published 4 hours before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

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From line 19 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits6to this page, all time

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2020| Parameter | Description |
2121| ---------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
22| `name` | The name of the tool. Must match the regex `^[a-zA-Z0-9_-]{1,64}$`. |
22| `name` | The name of the tool. Must match the regex `^[a-zA-Z0-9_-]{1,128}$`. |
2323| `description` | A detailed plaintext description of what the tool does, when it should be used, and how it behaves. |
2424| `input_schema` | A [JSON Schema](https://json-schema.org/) object defining the expected parameters for the tool. |
2525| `input_examples` | (Optional) An array of example input objects to help Claude understand how to use the tool. See [Providing tool use examples](https://platform.claude.com/docs/en/agents-and-tools/tool-use/define-tools#providing-tool-use-examples). |