bash-tool changedagents-and-tools/tool-use/bash-tool
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14 Aug 2026
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33url: https://platform.claude.com/docs/en/agents-and-tools/tool-use/bash-tool
44description: Let Claude request shell commands that your application runs in a persistent bash session and returns as tool results.
55featureMetadata:
6 status: ga
6 status: stable
77 zdr:
88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). Client-side tool run in your environment.
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2626 - claude-opus-4-5-20251101
2727 - claude-sonnet-4-5-20250929
2828 supportedPlatforms:
29 Claude API: ga
30 Claude Platform on AWS: ga
31 Amazon Bedrock: ga
32 Amazon Bedrock (InvokeModel): ga
33 Claude Models on Google Cloud (Google managed): ga
34 Microsoft Foundry: ga
29 Claude API: stable
30 Claude Platform on AWS: stable
31 Amazon Bedrock: stable
32 Amazon Bedrock (InvokeModel): stable
33 Claude Models on Google Cloud (Google managed): stable
34 Microsoft Foundry: stable
3535---
3636
3737The bash tool is a [client tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/how-tool-use-works): Claude doesn’t run commands itself. When you include the tool in a request, Claude replies with a `tool_use` block that names the command to run. Your application runs that command in a bash session it owns and returns the output in a `tool_result` block.
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