enterprise-auth-mcp-server

MCP server for enterprise authentication and authorization — JWT validation, OIDC token inspection, OAuth 2.0 introspection, and role-based access control for AI agents.

Features

• JWT Decode — Inspect token header, payload, and metadata without signature verification

• JWT Validate — Validate signature, expiry, audience, and issuer

• Permission Check — Verify if a token has required OAuth scopes and roles

• User Roles — Extract user identity, roles, and groups (supports Keycloak, Azure AD, Auth0, Okta)

• OAuth Introspection — RFC 7662 token introspection (remote endpoint or local fallback)

• OIDC Claims Verify — OpenID Connect Core 1.0 claims validation

• Token Scope List — List all scopes, roles, and permissions with provider auto-detection

• OIDC Discovery — Fetch provider endpoints from /.well-known/openid-configuration

Related MCP server: guardrails-mcp-server

Installation

pip install enterprise-auth-mcp-server

Claude Desktop Configuration

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "enterprise-auth": {
      "command": "enterprise-auth-mcp-server"
    }
  }
}

Tools

Usage Examples

Decode a JWT token

decode_jwt(token="eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...")

Validate a JWT with secret

validate_jwt(token="...", secret="my-secret", algorithms="HS256", audience="my-app")

Check if user has admin role

check_permissions(token="...", required_roles="admin,manager")

Verify OIDC claims

verify_oidc_claims(token="...", expected_issuer="https://accounts.google.com", expected_audience="my-client-id")

Get OIDC provider endpoints

get_oidc_discovery(issuer_url="https://accounts.google.com")

Supported Identity Providers

• Azure AD / Microsoft Entra ID — Azure roles, app roles, directory roles (wids)

• Okta — Groups, custom claims

• Auth0 — Permissions, roles via Management API conventions

• Keycloak — realm_access, resource_access

• Google Identity — Standard OIDC claims

• Any OIDC-compliant provider — Standards-based JWT/OIDC support

Use Cases

• Enterprise MCP Deployments — Validate agent identity before granting tool access

• Zero Trust Architecture — Verify every request has valid, unexpired credentials

• API Gateway Integration — Check OAuth scopes for fine-grained authorization

• Audit & Compliance — Extract and log user identity from authentication tokens

• SSO Integration — Verify tokens from any OIDC-compliant identity provider

License

MIT License — see LICENSE for details.