Smithery is a connection platform for AI agents: connect an agent once to the tools and services it needs — with authentication, credentials, and sessions handled for you — and reuse those connections across every chat, workflow, and harness.
Connecting agents to real services usually means rebuilding the same plumbing for every integration: OAuth flows, credential storage, session handling, and retries. Smithery removes that layer. From its CLI, a developer logs in, adds a service such as Notion with a single command, completes one authorization in the browser, and can then list and call that service’s tools immediately. When a request needs authentication, Smithery injects credentials and handles the OAuth dance automatically, and the same connected accounts work across Claude, GPT, and open-source models, in chat agents, background agents, and CLI tools alike. The connection layer is powered by agent.pw, Smithery’s open-source agent vault. On the supply side, tool builders can publish on Smithery to put their services in front of AI agents, with built-in auth and observability showing how their tools are used. Note that Smithery has been consolidating its product line: the site announces that its legacy MCP Proxy and managed identity shut down on October 31, with the Connect platform as the going-forward product.
Smithery is freemium: developers can sign up and start connecting agents to services for free, with paid tiers for heavier usage, more connections, and team needs.
Smithery is for agent builders who are tired of re-implementing authentication for every integration, and for API and tool providers who want their services discoverable and callable by the growing ecosystem of AI agents.