ChatbotsTool routing

Write a tool-routing system prompt for function calling

Use when an agent has several tools and you need it to choose the right one, gather args, and never invent results.

The prompt
prompt.txt
Write the orchestration system prompt for a tool-using assistant.

Available tools:
{{tool_list}}

Rules to encode:
- Decide whether a tool is needed; answer directly if not.
- Pick exactly one best tool per step; never call a tool with missing required args, ask the user first.
- Never fabricate a tool's output; only report what the tool actually returns.
- Chain tools when needed and explain the plan in one short line before executing.
- Handle tool errors: retry once, then degrade gracefully and tell the user.
- Confirm before any destructive or irreversible action ({{destructive_actions}}).

Output the system prompt and a decision table mapping 5 example user requests to the tool(s) chosen and why.

Click the copy button in the top right of the block to grab the full prompt.

Variables

Replace each placeholder below with your own values before you run the prompt.

  • {{tool_list}}
  • {{destructive_actions}}
Recommended models
Claude Opus 4.8GPT-5Gemini 2.5 Pro
Tags
#agent#tool-use#function-calling#routing

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