openapi-mcp
Openapi MCP
Documentation
OpenAPI MCP Server
An MCP server that lets LLMs inspect and interact with OpenAPI specifications.
Features
- Load OpenAPI specs from URL or file (OpenAPI 2.0 & 3.x)
- List and search endpoints
- Get request/response schemas (fully dereferenced)
- Validate payloads against schemas
- Generate sample request payloads
- Generate TypeScript types from schemas
- Extract authentication schemes
Installation
Via npm (recommended)
npm install -g @blackkspydo/openapi-mcpOr run directly with npx:
npx --yes @blackkspydo/openapi-mcpFrom source
git clone https://github.com/blackkspydo/openapi-mcp.git
cd openapi-mcp
bun install
bun run buildUsage
With Claude CLI
claude mcp add openapi-mcp -- npx --yes @blackkspydo/openapi-mcpWith Claude Desktop
Add to `~/Library/Application Support/Claude/claude_desktop_config.json`:
{
"mcpServers": {
"openapi-mcp": {
"command": "npx",
"args": ["--yes", "@blackkspydo/openapi-mcp"]
}
}
}Or if installed globally:
{
"mcpServers": {
"openapi-mcp": {
"command": "openapi-mcp"
}
}
}Standalone
openapi-mcp
# or
npx --yes @blackkspydo/openapi-mcpAvailable Tools
| Tool | Description |
|---|---|
| `load_spec` | Load an OpenAPI spec from URL or file |
| `list_endpoints` | List all endpoints with optional filtering |
| `search_endpoints` | Search endpoints by keyword |
| `get_endpoint_details` | Get full details for an endpoint |
| `get_request_schema` | Get request body schema |
| `get_response_schema` | Get response schema by status code |
| `validate_payload` | Validate JSON against schema |
| `generate_sample` | Generate sample request payload |
| `generate_typescript_types` | Generate TypeScript interfaces from schemas |
| `generate_curl` | Generate ready-to-use cURL command |
| `get_auth_schemes` | Get security schemes |
| `get_servers` | Get available API servers |
Example
You: Load the Petstore API spec from https://petstore.swagger.io/v2/swagger.json
You: List all POST endpoints
You: Generate TypeScript types for the Pet schema
You: Generate a cURL command for POST /pet
You: Generate a sample request for POST /petLicense
MIT
Frequently asked questions
What is openapi-mcp?
openapi-mcp is Openapi MCP
How do I install openapi-mcp?
Open the GitHub repository and follow its README. Most MCP servers are added to your client's MCP config, then called by your agent.
Is openapi-mcp open source?
Yes — it is hosted on GitHub at https://github.com/blackkspydo/openapi-mcp and has 3 stars.
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