MCP Servers

Spotlight MCP

Enables AI agents to lint API artifacts (OpenAPI, AsyncAPI, Arazzo) and manage rulesets conversationally via the Model Context Protocol.

Category

README

<p align="center"><a href="https://spotlight-rules.com"><img src="https://raw.githubusercontent.com/api-commons/spotlight-mcp/main/spotlight-rules-logo.png" alt="Spotlight Rules" height="90"></a></p>

Spotlight MCP

A Model Context Protocol server that exposes Spotlight to any AI client — so an agent can lint your API artifacts and work with rulesets conversationally. It runs the same @spotlight-rules/* engine as spotlight-cli, over stdio.

Tools

Tool	What it does
`lint_artifact`	Lint an artifact (`content`, optional `format`, optional `ruleset`) → findings (code, message, severity, path) + counts
`list_rulesets`	The built-in rulesets (`spotlight:oas`, `:asyncapi`, `:arazzo`) and their rules
`list_formats`	The artifact formats Spotlight can lint
`validate_ruleset`	Structurally validate a ruleset (alias, object, or YAML/JSON string)

Use it

npm install
npm start          # speaks MCP over stdio

Claude Desktop / any MCP client

Add to your client's MCP server config (e.g. Claude Desktop claude_desktop_config.json):

{
  "mcpServers": {
    "spotlight": {
      "command": "npx",
      "args": ["-y", "@spotlight-rules/spotlight-mcp"]
    }
  }
}

Then ask: "Lint this OpenAPI with Spotlight and tell me what to fix."

Part of the Spotlight suite

One engine (the CLI), one vocabulary (the spec + its rule tags): spec · cli · api (HTTP) · mcp (AI, this repo) · vscode · validator. Where spotlight-api is the HTTP surface, this is the AI surface.

Part of Spotlight Rules — a project of API Evangelist, maintained openly under API Commons. Apache-2.0.

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