Smithery

Smithery helps developers discover, publish, and connect Model Context Protocol servers. Its registry brings together tools that let an agent search, query databases, operate browsers, or reach business applications. The connection service manages authentication and sessions so an application does not need a separate integration implementation for every server.

Key Highlights

• Searchable public MCP server and skills catalog
• Managed OAuth and automatic credential refresh
• Encrypted credential storage and connection management
• REST API and CLI for developer workflows
• Server publishing and distribution tools

What Makes It Different

Discovery and managed connections live in the same service. A developer can choose a listed MCP server and connect it to an agent, or publish an integration for others to find. Arcade.dev acquired Smithery in August 2026. Its public registry remains available as a distinct service; acquisition does not turn every listing into an Arcade-built tool.

Features & Capabilities

Explore server descriptions and supported actions before creating a connection. Smithery's managed flow handles OAuth configuration, credential refresh, and session lifecycle. The documentation includes integrations for the Vercel AI SDK and a CLI for using MCP services in development environments.

Publishing distributes an MCP server through the registry and provides observability for the integration. Custom servers can expose external APIs or your own application's functions. The available permissions and actions depend on the chosen server and connected account, so inspect its behavior before giving it access to important data.

User Ratings and Testimonials

Registry use counts indicate activity on a listed integration, rather than an independent satisfaction rating. Compare a server's tools with the documentation of the service it connects to. Test authentication failures, returned data, and permission boundaries instead of treating discovery as a guarantee of integration quality.

Pricing & Value

Free sign-up is available for exploring Smithery and finding an integration. Compare the current account, usage, and hosting terms before running a sustained workload. Include the services your agent will connect to when estimating its operating cost.

An external service behind an MCP server may require its own account or paid API. Access to the registry therefore does not establish that every tool invocation is free.