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pleaseai/mcp-dev

Guide for creating high-quality MCP servers with best practices, TypeScript/Python patterns, and evaluation tools

Quality

71%

Does it follow best practices?

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Adds up to 20 points to the overall score

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SecuritybySnyk

Passed

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Overview
Quality
Evals
Security
Files

Quality

Content

56%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The skill has a well-sequenced four-phase process and a sensible progressive-disclosure design, but its execution is undermined by every referenced guide file being absent from the bundle and by a redundant closing reference section. Actionable code lives entirely in the missing files, leaving the body thin on executable detail.

Suggestions

Include the four reference files (mcp_best_practices.md, node_mcp_server.md, python_mcp_server.md, evaluation.md) in the bundle or fix their paths — every link in the body currently points to a nonexistent file, breaking the progressive-disclosure structure.

Remove or consolidate the closing 'Reference Files' section, which repeats the SDK URLs and guide links already presented in Phase 1, to cut duplicated tokens.

Add a minimal executable example inline (e.g., one Zod/Pydantic tool registration with @mcp.tool / server.registerTool) so implementation guidance is not wholly dependent on the external guides.

DimensionReasoningScore

Conciseness

Mostly efficient bullet-style guidance, but the closing 'Reference Files' section duplicates SDK URLs and guide links already given in Phase 1, and some bullets restate basics Claude already knows ('Async/await for I/O operations', 'No duplicated code (DRY principle)', 'Full type coverage'). Not 4 because the duplication and padding are more than minor.

3 / 5

Actionability

Some concrete guidance exists (sitemap URL with .md-suffix trick, 'npx @modelcontextprotocol/inspector', 'npm run build', 'python -m py_compile your_server.py', XML output example), but all actual code examples are delegated to the four reference guide files, none of which exist in the bundle, so key executable detail is missing. Not 4 because the gap is more than minor.

3 / 5

Workflow Clarity

Four clearly sequenced phases (research, implementation, review/test, evaluations) with explicit verification checkpoints in Phase 3 ('Run npm run build', 'Test with MCP Inspector'). Not 5 because there is no explicit fix-and-retry feedback loop and testing detail is delegated to the missing guides; better than 3 because checkpoints are concrete and present.

4 / 5

Progressive Disclosure

The structure is well designed on paper — a lean overview with one-level-deep, clearly signaled references and load timing ('Load During Phase 2', 'Load First') — but all four referenced paths (./reference/mcp_best_practices.md, node_mcp_server.md, python_mcp_server.md, evaluation.md) are missing from the bundle, so the navigation structure does not actually resolve. Not 4 because broken references undermine the file organization.

3 / 5

Total

13

/

20

Passed

Description

73%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong description that clearly defines its niche, uses third person, and includes an explicit 'Use when...' clause with concrete framework names. Main weakness is that the 'what' and 'when' clauses overlap heavily, so trigger phrasing adds little beyond the capability statement.

DimensionReasoningScore

Specificity

The description names the domain ('creating high-quality MCP servers') with 1-2 concrete actions ('enable LLMs to interact with external services through well-designed tools', 'integrate external APIs or services'), but 'high-quality' and 'well-designed' are adjectives rather than additional specific actions, so coverage is not comprehensive as required for 4.

3 / 5

Completeness

Both parts are present: a clear what ('Guide for creating high-quality MCP servers...') and an explicit when ('Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript'). Not 5 because the when-clause largely restates the what-clause rather than adding distinct concrete trigger phrases.

4 / 5

Trigger Term Quality

Good natural keyword coverage: 'MCP servers', 'Model Context Protocol', 'external APIs', 'Python (FastMCP)', 'Node/TypeScript (MCP SDK)' are terms users would actually say. Not 5 because common variations like 'connector', 'expose an API', or 'tool integration' are missing.

4 / 5

Distinctiveness Conflict Risk

Clear niche (MCP server development) with distinct triggers ('MCP', 'Model Context Protocol', 'FastMCP', 'MCP SDK'); minimal conflict risk with other skills.

5 / 5

Total

16

/

20

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

relative_links

Relative link issues: 10 missing

Warning

Total

15

/

16

Passed

Reviewed

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