parallel-tool-use

 }
 ```
 
+The [computer use tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool#batch-actions) and the [browser use tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool#batch-actions) are stricter. When Claude returns several of their member tool calls in one turn (a batch action), run them sequentially in the order they appear and stop at the first failure; each tool defines the exact text to return for the calls you skip.
+
 ## Test parallel tool calls
 
 <Note>

 
 **4. Calls in a batch appear to depend on each other**
 
-Execution order is your choice. If your tools have ordering dependencies, running the batch sequentially and stopping on the first failure is a valid strategy: return `is_error: true` for any call you didn't run. If you run in parallel and a call fails because its prerequisite hadn't completed, return `is_error: true` with the natural error message. Claude will reissue the call on the next turn. To reduce dependent calls appearing together, add this to your system prompt: "Only batch tool calls that are independent of each other."
+Execution order is your choice. If your tools have ordering dependencies, running the batch sequentially and stopping on the first failure is a valid strategy (and the required one for the [computer use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/computer-use-tool#batch-actions) and [browser use](https://platform.claude.com/docs/en/agents-and-tools/tool-use/browser-use-tool#batch-actions) tools): return `is_error: true` for any call you didn't run. If you run in parallel and a call fails because its prerequisite hadn't completed, return `is_error: true` with the natural error message. Claude will reissue the call on the next turn. To reduce dependent calls appearing together, add this to your system prompt: "Only batch tool calls that are independent of each other."
 
 ## Next steps