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Sweep 23 Oct 2026 · 21:48Z Build v2.1.310 529 read Stable v2.1.308 Latest v2.1.310 Next v2.1.310 Feeds RSS JSON llms.txt llms-full.txt Unofficial
One change · api

Beta changedapi/beta

Nearest release: v2.1.296, published an hour after 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 477
477477 
478478#### Headers
479479 
480- `"anthropic-version": optional string`
481 
482 The version of the Claude API you want to use.
483 
484 Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
485 
480486- `"anthropic-beta": optional array of AnthropicBeta`
481487 
482488 Optional header to specify the beta version(s) you want to use.
from line 949
943949 
944950#### Headers
945951 
952- `"anthropic-version": optional string`
953 
954 The version of the Claude API you want to use.
955 
956 Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
957 
946958- `"anthropic-beta": optional array of AnthropicBeta`
947959 
948960 Optional header to specify the beta version(s) you want to use.
from line 1400
13881400 
13891401#### Headers
13901402 
1403- `"anthropic-version": optional string`
1404 
1405 The version of the Claude API you want to use.
1406 
1407 Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
1408 
13911409- `"anthropic-beta": optional array of AnthropicBeta`
13921410 
13931411 Optional header to specify the beta version(s) you want to use.
from line 7753
77357753 
77367754 - `strict: optional boolean`
77377755 
7738 When true, guarantees schema validation on tool names and inputs
7739 
7740 - `BetaToolTextEditor20250429 object`
7741 
7742 - `type: "text_editor_20250429"`
7743 
7744 - `name: "str_replace_based_edit_tool"`
7745 
7746 Name of the tool.
7747 
7748 This is how the tool will be called by the model and in `tool_use` blocks.
7749 
7750 - `allowed_callers: optional array of "direct" or "code_execution_20250825" or "code_execution_20260120" or "code_execution_20260521"`
7751 
7752 - `"direct"`
7753 
7754 - `"code_execution_20250825"`
7755 
7756 - `
7756 When true,
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