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nuno-morais

Prompt Enhancer MCP

by nuno-morais

score_prompt

Evaluate a prompt's clarity, specificity, structure, guardrails, and token efficiency with a 1-5 score. Optionally compare two prompts to get per-dimension deltas and a verdict.

Instructions

Judge-grades a prompt 1-5 on clarity, specificity, structure, guardrails, and token efficiency. Pass 'baseline' to compare two prompts and get per-dimension deltas and a verdict.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
modelNoOverride for the judge model
engineNoThe underlying LLM engine to use
promptYesThe prompt to score
baselineNoOptional second prompt; switches to comparison mode (baseline vs prompt)
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It mentions scoring dimensions, comparison mode, and output (deltas/verdict) but lacks details on side effects, auth, or rate limits. For a non-destructive scoring tool, this is adequate but not comprehensive.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two sentences, efficient and front-loaded with the core purpose. Every sentence adds value with no redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema is provided, so the description should clarify return format. It mentions grades 1-5 and deltas/verdict for comparison, but lacks specifics on output structure (e.g., JSON with per-dimension scores). For a tool with 4 parameters and no output schema, this is a notable gap.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so baseline is 3. The description adds context about the baseline parameter switching to comparison mode and mentions per-dimension deltas and verdict, which enriches understanding beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool grades a prompt on five specific dimensions with a 1-5 scale and has a comparison mode with baseline. It distinguishes itself from siblings like lint_prompt or optimize_prompt by focusing on scoring.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for scoring prompts but does not explicitly advise when to use this tool over siblings. No when-not-to-use or alternative guidance is provided.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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