Smithery
What is Smithery?
Smithery is a platform for developers and teams building agentic products that connects AI agents to tools and services so they can act on real workflows instead of stopping at chat. It includes Authentication Handling, Command Line Tool, Cross-runtime Connections, Open Source Software, Publishing Tools, RPCs, Namespaces, and Managed OAuth. Its catalog includes Gmail, Brave Search, Google Sheets, Notion, GitHub, and Slack, with customers like OpenAI, Google, Microsoft, GitHub, Slack, and Notion. Plans run Free, Pro at $20/month, and Enterprise custom.
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At a glance
- Smithery is best for AI product teams who need agents to connect securely to external tools.
- Free; Pay as you Go $10/mo; Custom
- Yes — Public API for integrating with various AI models and services.
What does Smithery do?
Smithery is a platform for connecting AI agents to tools and services so they can act on real workflows instead of stopping at chat. It is aimed at developers and teams building agentic products that need authentication, credentials, sessions, and reusable connections handled for them. The core problem it solves is the plumbing between models and external systems. Smithery supports MCP servers, a CLI, RPCs, namespaces, managed OAuth, persistent connections, and publishing tools for distribution. Its catalog includes integrations such as Gmail, Brave Search, Google Sheets, Notion, GitHub, and Slack. It also offers a public API for integrating with various AI models and services, and its open-source Connect layer is powered by agent.pw.
Why use Smithery?
- Connect once and reuse the same accounts across multiple models, chat agents, background agents, and CLI workflows.
- Built-in Managed OAuth and credential injection reduce the amount of auth plumbing teams need to maintain.
- The catalog includes high-use integrations like Gmail, Brave Search, Google Sheets, Notion, GitHub, and Slack.
- Publishing and observability are part of the platform, so tool builders can ship MCP servers and inspect usage.
- The open-source agent.pw foundation gives teams a clearer path for self-directed connection handling.
Who is Smithery for?
- AI product engineers who need agents to authenticate and call external services reliably.
- Platform teams who want reusable connections across chat, CLI, and background agents.
- Founders building agent workflows who need a large catalog of ready-made MCP tools.
- Automation builders who need Gmail, Notion, or search integrations without custom auth plumbing.
What are Smithery's key features?
Authentication Handling
Handles OAuth flows, credential injection, and retries so agents can access external tools without custom auth code.
Command Line Tool
Lets you add MCP tools, list available tools, and call RPCs from the terminal for fast agent setup.
Cross-runtime Connections
Carries connected accounts across Claude, GPT, open-source models, chat agents, background agents, and CLI tools.
Open Source Software
Smithery Connect is powered by agent.pw, an open-source agent vault that supports reusable connection handling.
Publishing Tools
Lets builders publish MCP servers once and install them anywhere, with built-in auth and observability for distribution.
RPCs
Supports remote procedure calls to MCP servers, letting agents execute actions through connected tools instead of manual steps.
Namespaces
Organizes connected tools into namespaces, with plan limits shown as 3 or 100 namespaces on pricing pages.
Managed OAuth
Simplifies secure authentication for applications and is used to connect MCP servers with credential storage.
What are Smithery's use cases?
Agent auth and tool setup
AI product engineers use Smithery to connect an agent to external systems, using Managed OAuth and Authentication Handling to avoid building credential flows from scratch. They can then list tools and call them through the Command Line Tool for production workflows.
Reusable workflows across runtimes
Platform teams use Smithery to keep the same connected accounts working across Claude, GPT, open-source models, and CLI tools. Cross-runtime Connections and Persistent connections help them preserve access and reduce repeated setup for each environment.
Inbox automation for agents
Automation builders use Smithery to wire agents into Gmail Management and Email management, then automate drafting, replying, forwarding, and bulk message actions. That lets them run inbox workflows without custom mailbox integrations.
How does Smithery work?
- Connect the tools your agent needs from the MCP catalog, then authorize each connection through Smithery's Managed OAuth flow so credentials stay handled for you.
- List the available tools after authorization, using the Command Line Tool to inspect what your agent can call and confirm the right namespaces are present.
- Call the selected RPCs from the CLI, passing requests to MCP servers and letting Smithery inject credentials and retry auth when needed.
- Reuse the same Persistent connections across chats, workflows, and harnesses so Claude, GPT, and open-source models can share connected accounts.
- Publish your MCP server on Smithery, then monitor usage and observability from the distribution flow to see how agents interact with it.
How much does Smithery cost?
Free
Free- Basic access to tools
- Limited usage
Pro
$20/month- Increased usage limits
- Features access
Enterprise
Custom- Custom solutions and support
Frequently asked questions
What is Smithery used for?
Smithery connects AI agents to tools and services so they can work with real systems instead of staying in chat. The platform centers on MCP servers, managed authentication, and reusable connections for agent workflows.
How do I start using Smithery?
Start by connecting the tools your agent needs, then authorize them and make requests through the CLI or API. Smithery's own docs and pricing pages describe the flow as connect, authorize, list tools, and call them.
Is there a free plan?
Yes. Smithery offers a Free tier with basic access to tools and limited usage. Its pricing page labels that plan as Hobby and includes Managed OAuth and Persistent connections.
What tools can I connect?
The site shows Gmail, Brave Search, Google Sheets, Notion, GitHub, Slack, and Supabase among its integrations.
What is an RPC in Smithery?
An RPC is a remote procedure call that lets you execute code on MCP servers. Smithery uses RPCs as part of its tool-calling flow from the CLI and connected agent environments.
What does managed OAuth do?
Managed OAuth handles secure authentication for connected tools. Smithery says it simplifies auth flows, injects credentials, and retries requests so agents can keep working without manual token handling.
Can connections persist across apps?
Yes. Smithery supports Persistent connections and Cross-runtime Connections, so the same linked accounts can be reused across chats, workflows, harnesses, and different model runtimes.
Does Smithery have an API?
Yes. Smithery provides a public API for integrating with various AI models and services, alongside its CLI-based workflow for connecting tools and making requests.
Can I publish my own MCP server?
Yes. Smithery's publishing flow lets you publish an MCP server once and install it anywhere, with built-in auth and observability for distribution and usage tracking.
Editor's read
Check whether your workflow needs the listed namespace limits, since pricing pages show 3 or 100 namespaces depending on plan. If you expect many connected tool groups, verify which tier applies before committing.
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