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3636 <Step title="canUseTool callback">
3737 If not resolved by any of the above, call your [`canUseTool` callback](/docs/en/agent-sdk/user-input) for a decision. In `dontAsk` mode, this step is skipped and the tool is denied.
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39 In the TypeScript SDK, if you set [`permissionPrompts: 'none'`](/docs/en/agent-sdk/typescript#options), your callback isn't called at this step. A [`PermissionRequest` hook](/docs/en/hooks#permissionrequest) still gets a chance to decide, and if it doesn't, Claude Code denies the call. The option requires Claude Code v2.1.259 or later.
3840 </Step>
3941</Steps>
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