Coding Vendor library

Sample prompt for maximum parallel efficiency

Agents that should run independent tool calls in parallel

For
Claude
Source
Anthropic prompt engineering guide
Checked
Oct 2, 2026

The prompt

Copied verbatim from the vendor library
If you intend to call multiple tools and there are no dependencies between the tool
calls, make all of the independent tool calls in parallel. Prioritize calling tools
simultaneously whenever the actions can be done in parallel rather than sequentially.
For example, when reading 3 files, run 3 tool calls in parallel to read all 3 files into
context at the same time. Maximize use of parallel tool calls where possible to increase
speed and efficiency. However, if some tool calls depend on previous calls to inform
dependent values like the parameters, do NOT call these tools in parallel and instead
call them sequentially. Never use placeholders or guess missing parameters in tool
calls.
How to use this prompt: fill the variables, run it in Claude, check the resultYOU FILL INReady to runPaste the prompt as isNo variables to replaceTHE PROMPTClaude111 words · 9 linessource: vendor libraryYOU GETThe resultAgents that should run independen…check the result against the tipscopy, paste, run in Claudefill → run → check · prompts are copied word for word from their source
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