io.github.lazymac2x/claude-skill-validator

Official4 toolsLive

by lazymac2x

Cloudflare Workers MCP server: claude-skill-validator

Cloudflare Workers MCP server named claude-skill-validator. It provides REST and MCP access, using JSON-RPC 2.0. The service is described as “Cloudflare Workers MCP server: claude-skill-validator,” and is available live at api.lazy-mac.com/claude-skill-validator.

🛠️ Key Features

Cloudflare Workers deployment
REST support
MCP via JSON-RPC 2.0
Tool count: 4

🚀 Use Cases

Validate Claude-related “skills” through an API endpoint
Access the same backend via REST or MCP (JSON-RPC 2.0)

⚡ Developer Benefits

JSON-RPC 2.0 interface for MCP clients
REST endpoint at api.lazy-mac.com/claude-skill-validator

⚠️ Limitations

Based on the provided excerpt only: no additional tool names, inputs, outputs, or schema details are specified.

Captured live from the server via tools/list.

validate_skill

Fully validate a Claude SKILL.md file — frontmatter rules, body quality, security scan, tool collision check. Returns score (0–100), gate (pass/review/fail), and structured errors/warnings.

Parameters3

skill_md	string	required	Full contents of the SKILL.md file including --- frontmatter ---
tools	array	optional	Optional override tool list if not declared in frontmatter
allowed_tools	array	optional	Optional whitelist; non-listed tools will produce errors

Raw schema

{
  "type": "object",
  "properties": {
    "skill_md": {
      "type": "string",
      "description": "Full contents of the SKILL.md file including --- frontmatter ---"
    },
    "tools": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Optional override tool list if not declared in frontmatter"
    },
    "allowed_tools": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Optional whitelist; non-listed tools will produce errors"
    }
  },
  "required": [
    "skill_md"
  ]
}

lint_frontmatter

Parse and validate only the YAML frontmatter of a Claude Skill. Returns parsed fields and any rule violations. Use during iterative authoring.

Parameters1

yaml

string

required

Raw YAML content without --- delimiters (just key: value lines)

Raw schema

{
  "type": "object",
  "properties": {
    "yaml": {
      "type": "string",
      "description": "Raw YAML content without --- delimiters (just key: value lines)"
    }
  },
  "required": [
    "yaml"
  ]
}

scan_security

Scan a Claude Skill for dangerous shell commands, hardcoded secrets, or prompt-injection phrases. Returns findings with excerpts.

Parameters1

skill_md

string

required

The skill text to scan for security issues

Raw schema

{
  "type": "object",
  "properties": {
    "skill_md": {
      "type": "string",
      "description": "The skill text to scan for security issues"
    }
  },
  "required": [
    "skill_md"
  ]
}

score_skill

Run full validation and return a 0–100 score plus a ship gate (pass/review/fail). Minimal payload suitable for CI/CD pipelines.

Parameters3

skill_md	string	required	Full SKILL.md contents
tools	array	optional
allowed_tools	array	optional

Raw schema

{
  "type": "object",
  "properties": {
    "skill_md": {
      "type": "string",
      "description": "Full SKILL.md contents"
    },
    "tools": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "allowed_tools": {
      "type": "array",
      "items": {
        "type": "string"
      }
    }
  },
  "required": [
    "skill_md"
  ]
}

Install

Tools (4)

validate_skilllint_frontmatterscan_securityscore_skill

Remote endpoint

Streamable HTTP

Hosted server - connect over the network, no local install.

url

https://api.lazy-mac.com/claude-skill-validator/mcp

Add to VS Code Add to Cursor

claude_desktop_config.json

json

{
  "mcpServers": {
    "claude-skill-validator": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://api.lazy-mac.com/claude-skill-validator/mcp"
      ]
    }
  }
}

Desktop config is stdio-only; this bridges via mcp-remote. Native remote: Settings > Connectors.

io.github.lazymac2x/claude-skill-validator

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

validate_skill

lint_frontmatter

scan_security

score_skill

claude-skill-validator-api

Install

Remote endpoint

Related servers