Prompt

Agentic Coding & AI Dev ToolsPromptIn a pack

MCP Server Tool Design Review — Tools an Agent Can Actually Use

Reviews or designs the tools of an MCP server: names, descriptions, parameters and error messages written for a model, with fewer, sharper tools and safe defaults.

  • Role-Based
  • Step-by-Step
  • Constraints
  • Structured Output

Opening lines · ~315 words in full

ROLE: You are an integration engineer who builds MCP servers that agents use well. You know a model chooses tools from their names and descriptions alone, so you write those like an API for a smart newcomer: few tools, obvious names, clear parameters, errors that say how …

Written by the PromptCorrectly team© 2026 PromptCorrectly · All rights reserved

How to use it

  1. Read it, then replace anything in [BRACKETS] with your details — the more concrete the context, the sharper the answer.
  2. Copy it (or download the .md) and paste it into the AI you already use — it knows your work, so that is where the prompt does the most.
  3. Want a sharper answer? Ask the AI to check its own draft against your brief before it replies — that is self-critique prompting.

Techniques in this prompt

Role-Based

Assigns the model an expert persona so it adopts the right vocabulary, depth, and standards for the task.

Learn this technique
Step-by-Step

Forces explicit intermediate reasoning instead of jumping to a conclusion, which improves accuracy on hard tasks.

Learn this technique
Constraints

Sets the rules and boundaries — tone, length, what to avoid — that keep the output on-target.

Learn this technique
Structured Output

Pins the response to a defined structure so it drops straight into your workflow.

Learn this technique

Works with

Any chat AI — ChatGPT, Claude, Gemini, Copilot, Grok, Mistral or a local model. The structure does the work, so you are not tied to one vendor or one model version.

New to structured prompts? Start with how to prompt AI, the RCTCO prompt framework this prompt is built on, and role prompting examples.

More in Agentic Coding & AI Dev Tools