Follow Discord
Sweep 10 Nov 2026 · 02:18Z Build v2.1.322 539 read Stable v2.1.311 Latest v2.1.322 Next v2.1.322 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Developer Platform 11 Nov 2026
One change · api

parallel-tool-use changedagents-and-tools/tool-use/parallel-tool-use

Recorded here
Lines+10added
Lines−10removed
From line 25 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits18to this page, all time

The whole hunk

from line 25, old and new numbered
/
lines
from line 25
2525 - claude-sonnet-4-5-20250929
2626 supportedPlatforms:
2727 Claude API: stable
28 Claude Platform on AWS: stable
2928 Amazon Bedrock: stable
30 Amazon Bedrock (InvokeModel): stable
29 Amazon Bedrock (bedrock-runtime): stable
30 Claude Platform on AWS: stable
3131 Claude Models on Google Cloud (Google managed): stable
3232 Microsoft Foundry: stable
3333---
from line 63
6363 
6464<CodeGroup exclude="shell">
6565 <CodeGroupItem language="cURL">
66 This end-to-end test needs more logic than a single shell command. Use the [Claude SDK](https://platform.claude.com/docs/en/cli-sdks-libraries/overview) to run it. The request it sends is a standard tool use request with two tools defined.
66 This end-to-end test needs more logic than a single shell command. Use the [Anthropic SDK](https://platform.claude.com/docs/en/cli-sdks-libraries/overview) to run it. The request it sends is a standard tool use request with two tools defined.
6767 </CodeGroupItem>
6868 
6969 <CodeGroupItem language="CLI">
70 This end-to-end test needs more logic than a single shell command. Use the [Claude SDK](https://platform.claude.com/docs/en/cli-sdks-libraries/overview) to run it.
70 This end-to-end test needs more logic than a single shell command. Use the [Anthropic SDK](https://platform.claude.com/docs/en/cli-sdks-libraries/overview) to run it.
7171 </CodeGroupItem>
7272 
7373 ```python Python
from line 1158
11581158 
11591159### Exactly one tool call
11601160 
1161When the `tool_choice` type is `any` or `tool`, setting `disable_parallel_tool_use: true` means Claude calls exactly one tool. Claude Fable 5.2, Claude Mythos 5.2, Claude Opus 5.5, Claude Sonnet 5.5, Claude Fable 5.1, and Claude Mythos 5.1 don’t support these `tool_choice` types (see [Forcing tool use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/define-tools#forcing-tool-use)). The following example uses `any`. The same field works with `tool`:
1161When the `tool_choice` type is `any` or `tool`, setting `disable_parallel_tool_use: true` means Claude calls exactly one tool. Claude Fable 5.2, Claude Mythos 5.2, Claude Fable 5.1, Claude Mythos 5.1, Claude Opus 5.5, and Claude Sonnet 5.5 don’t support these `tool_choice` types (see [Forcing tool use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/define-tools#forcing-tool-use)). The following example uses `any`. The same field works with `tool`:
11621162 
11631163<CodeGroup>
11641164 ```bash cURL
from line 1479
14791479 
14801480<CodeGroup exclude="shell">
14811481 <CodeGroupItem language="cURL">
1482 To measure parallel tool use, your code analyzes the responses that it already collected. This needs more logic than a single shell command. Use the [Claude SDK](https://platform.claude.com/docs/en/cli-sdks-libraries/overview) for this.
1482 To measure parallel tool use, your code analyzes the responses that it already collected. This needs more logic than a single shell command. Use the [Anthropic SDK](https://platform.claude.com/docs/en/cli-sdks-libraries/overview) for this.
14831483 </CodeGroupItem>
14841484 
14851485 <CodeGroupItem language="CLI">
1486 To measure parallel tool use, your code analyzes the responses that it already collected. This needs more logic than a single shell command. Use the [Claude SDK](https://platform.claude.com/docs/en/cli-sdks-libraries/overview) for this.
1486 To measure parallel tool use, your code analyzes the responses that it already collected. This needs more logic than a single shell command. Use the [Anthropic SDK](https://platform.claude.com/docs/en/cli-sdks-libraries/overview) for this.
14871487 </CodeGroupItem>
14881488 
14891489 ```python Python
from line 1631
16311631* Availability: On by default
16321632* Usage: To turn it off, set `disable_parallel_tool_use: true` inside `tool_choice`.
16331633 
1634| Status | Cloud platforms |
1635| --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
1636| Available | Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Amazon Bedrock (InvokeModel)](https://platform.claude.com/docs/en/build-with-claude/claude-on-amazon-bedrock-legacy), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) |
1634| Status | Cloud platforms |
1635| --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
1636| Available | Claude API, [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Amazon Bedrock (bedrock-runtime)](https://platform.claude.com/docs/en/build-with-claude/claude-on-amazon-bedrock-legacy), [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) |
16371637 
16381638#### [Managed Agents](https://platform.claude.com/docs/en/managed-agents/overview)
16391639 
Feedback