Generates TypeScript client code using Axios for HTTP requests from OpenAPI specifications.
Generates Python data models with Pydantic validation from OpenAPI specifications.
Generates Python client code (using httpx or pydantic) from OpenAPI specifications.
Generates TypeScript React Query hooks for data fetching from OpenAPI specifications.
Generates Rust client code with Serde serialization and Reqwest HTTP client from OpenAPI specifications.
Generates TypeScript type definitions and client code (fetch, axios, react-query) from OpenAPI specifications.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@OpenAPI Sync MCP Generate TypeScript types from https://petstore.swagger.io/v2/swagger.json"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
A high-performance MCP server for OpenAPI specifications. Parse, diff, track dependencies, and generate code - all from your AI assistant.
Built with Rust for speed and minimal resource usage.
Dependency Graph - Know which endpoints break when you change a schema
Smart Diff - Detect breaking changes before they hit production
Paginated Parsing - Handle massive specs without overwhelming context
24h Cache - Fast repeated queries with HTTP cache support
Multi-target Codegen - TypeScript, Rust, Python from one spec
Related MCP server: OpenAPI Schema Explorer
npm install -g @jhlee0409/openapi-sync-mcpAdd to ~/.claude/settings.json:
{
"mcpServers": {
"oas": {
"command": "openapi-sync-mcp"
}
}
}Tool | Description |
| Parse and validate OpenAPI spec (with pagination) |
| Find affected endpoints when a schema changes |
| Compare two spec versions, detect breaking changes |
| Check cache status |
| Generate TypeScript/Rust/Python code |
typescript-types · typescript-fetch · typescript-axios · typescript-react-query · rust-serde · rust-reqwest · python-pydantic · python-httpx
# npm (recommended)
npm install -g @jhlee0409/openapi-sync-mcp
# Cargo
cargo install openapi-sync-mcp
# Or download from GitHub ReleasesServer not responding?
chmod +x openapi-sync-mcp
echo '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}' | openapi-sync-mcpCache issues?
Delete .openapi-sync.cache.json or use use_cache: false.
cargo test # Run tests
cargo fmt --check # Check formatting
cargo clippy # LintMIT
claude-plugins - Plugin commands (/oas:*) for enhanced workflow
This server cannot be deployed
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