MCP Auth

Secure auth for MCP servers

Give AI agents access to your app with OAuth 2.1 flows, tool permissions, PKCE, scopes, and more.

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MCP Auth Architecture

MCP Client A

MCP Client B

AuthSec Auth

MCP Server

Add OAuth to your MCP server

Production-ready MCP auth in minutes

AuthSec AuthKit supports OAuth 2.1 as an MCP-compatible authorization server, enabling fine-grained authorization for agentic applications and workflows.

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Live demo: secure OAuth flow for MCP

Watch how auth and tool permissions work together.

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Everything you need to learn quickly and ship confidently.

Read the MCP docs

We simplify an evolving protocol and make securing MCP as easy as pasting a URL.

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Fork MCP examples

Ship quickly with open-source templates compatible with your language and framework.

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Bring your own users

Already have login? Use AuthSec Connect as middleware without migrating your user stack.

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Auth for MCP has never been easier

AuthSec handles OAuth Authorization Server complexity so your team can focus on MCP tools and resources.

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OAuth 2.1 support

Built-in OAuth 2.1 flows with PKCE and secure defaults.

Tool permissions

Fine-grained authorization for agent tools and actions.

Scope management

Control exactly what agents can access across your app.

server.py

from fastmcp import FastMCP
from fastmcp.server.auth.providers.authsec import AuthKitProvider

auth_provider = AuthKitProvider(
    authkit_domain="https://your-project.authsec.ai",
    base_url="http://localhost:8000"
)

mcp = FastMCP(
    name="AuthKit Secured App",
    auth=auth_provider
)