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PROMPT SPACE
T
FreeUniversal

tool-use-coach

Turn erratic AI tool calls into a reliable, verified, and safe execution strategy.

skill install https://www.promptspace.in/skills/tool-use-coach

What it does

Tool Use Coach transforms haphazard AI tool execution into a structured, reliable workflow. It forces agents to plan, verify, and use the principle of least privilege when selecting tools. Instead of your agent "hallucinating" tool calls or performing redundant actions, this skill implements a strict protocol for evidence-based tool use.

Why use this skill

Prompting an AI to "use tools" often leads to inefficient loops or risky, irreversible actions. This skill provides a developer-centric framework that emphasizes:

  • Tool Minimalalism: Choosing the smallest, safest tool for the job.
  • Verification First: Treating tool output as claims that must be validated against the goal.
  • Risk Mitigation: Preventing chained irreversible actions without intermediate checks.
  • Failure Recovery: Implementing systematic fallback patterns when a tool call fails.

Supported Workflows

Designed for integration with any tool-enabled agent (like Claude Code, Cursor, or custom MCP setups), it provides a compact planning rubric and recovery patterns that work across search, edit, and execution toolsets.

Use cases

  • Reduce redundant and expensive API or tool calls during execution
  • Generate a step-by-step verification plan for high-risk state changes
  • Implement 'least powerful tool' logic to improve agent safety and speed
  • Recover gracefully from failed tool calls with structured fallback logic

Example

Prompt

Plan a safe sequence of tool calls to refactor this auth module and verify the fix.

Output

Proposed Plan:
1. 'ls -R' to locate the target config (Avoids heavy grep).
2. 'sed' for the specific line fix (Safer than overwriting file).
3. 'npm test' to verify the fix hasn't broken the build.
Reason: Minimizes side effects and ensures state change is validated.

Frequently asked questions

This skill provides a structured protocol and rubric that enforces planning and verification, preventing agents from making redundant, hallucinated, or risky tool calls during complex tasks.
tool-use-coach — AI Agent Skill | PromptSpace