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MCP Authorization

MCP Okta OAuth Policy

Authenticate MCP gateway requests using a gateway-issued OAuth access token, with browser login delegated to Okta.

This is an Okta-friendly wrapper around McpOAuthInboundPolicy. Provide an Okta domain, optional authorization server id, clientId, and clientSecret; the Okta OIDC issuer, JWKS URL, and browser login endpoints are derived automatically.

Configuration

The configuration shows how to configure the policy in the 'policies.json' document.

config/policies.json
{
  "name": "my-mcp-okta-oauth-inbound-policy",
  "policyType": "mcp-okta-oauth-inbound",
  "handler": {
    "export": "McpOktaOAuthInboundPolicy",
    "module": "$import(@zuplo/runtime)",
    "options": {
      "authorizationServerId": "default",
      "browserLoginOverrides": {
        "remoteTimeoutMs": 10000,
        "sessionTtlSeconds": 28800,
        "stateTtlSeconds": 900
      },
      "clientId": "$env(OKTA_CLIENT_ID)",
      "clientSecret": "$env(OKTA_CLIENT_SECRET)",
      "gateway": {
        "accessTokenTtlSeconds": 900,
        "cimdEnabled": true,
        "refreshTokenTtlSeconds": 2592000
      },
      "oktaDomain": "acme.okta.com",
      "scope": "openid profile email"
    }
  }
}

Policy Configuration

• name <string> - The name of your policy instance. This is used as a reference in your routes.
• policyType <string> - The identifier of the policy. This is used by the Zuplo UI. Value should be mcp-okta-oauth-inbound.
• handler.export <string> - The name of the exported type. Value should be McpOktaOAuthInboundPolicy.
• handler.module <string> - The module containing the policy. Value should be $import(@zuplo/runtime).
• handler.options <object> - The options for this policy. See Policy Options below.

Policy Options

The options for this policy are specified below. All properties are optional unless specifically marked as required.

• oktaDomain (required) <string> - The Okta org domain, without https://, a trailing slash, or a path.
• authorizationServerId <string> - Optional Okta custom authorization server id. Omit this to use the org authorization server.
• clientId (required) <string> - The Okta OIDC application client_id registered for the gateway's browser login flow.
• clientSecret (required) <string> - The Okta OIDC application client_secret. Use $env(...) to source from a secret environment variable.
• scope <string> - OIDC scopes requested during browser login. Defaults to "openid profile email".
• gateway <object> - Gateway-side OAuth token settings. The gateway issuer and advertised URLs are derived from the incoming request origin.
  • accessTokenTtlSeconds <integer> - Lifetime of access tokens issued by /oauth/token. Defaults to 900.
  • refreshTokenTtlSeconds <integer> - Lifetime of refresh tokens issued by /oauth/token. Defaults to 2592000.
  • cimdEnabled <boolean> - Whether to advertise client_id_metadata_document_supported in AS metadata. Defaults to true.
• browserLoginOverrides <object> - Optional overrides for the derived browser-login settings.
  • remoteTimeoutMs <integer> - No description available. Defaults to 10000.
  • stateTtlSeconds <integer> - No description available. Defaults to 900.
  • sessionTtlSeconds <integer> - No description available. Defaults to 28800.

Using the Policy

MCP Okta OAuth Inbound

Authenticate MCP gateway requests using a gateway-issued OAuth access token, with browser login delegated to Okta.

This is a thin Okta-friendly wrapper around the generic McpOAuthInboundPolicy. Use it when you want to configure browser login with Okta-specific fields instead of the full set of OIDC URLs.

Derived configuration

For the Okta org authorization server, the wrapper derives:

Generic field	Derived value
oidc.issuer	https://{oktaDomain}
oidc.jwksUrl	https://{oktaDomain}/oauth2/v1/keys
browserLogin.url	https://{oktaDomain}/oauth2/v1/authorize
browserLogin.tokenUrl	https://{oktaDomain}/oauth2/v1/token

When authorizationServerId is set, the wrapper derives custom authorization server URLs:

Generic field	Derived value
oidc.issuer	https://{oktaDomain}/oauth2/{authorizationServerId}
oidc.jwksUrl	https://{oktaDomain}/oauth2/{authorizationServerId}/v1/keys
browserLogin.url	https://{oktaDomain}/oauth2/{authorizationServerId}/v1/authorize
browserLogin.tokenUrl	https://{oktaDomain}/oauth2/{authorizationServerId}/v1/token

These endpoint shapes follow Okta's org and custom authorization server metadata conventions.

Configuration

Code
{
  "name": "okta-managed-oauth",
  "policyType": "mcp-okta-oauth-inbound",
  "handler": {
    "module": "$import(@zuplo/runtime)",
    "export": "McpOktaOAuthInboundPolicy",
    "options": {
      "oktaDomain": "acme.okta.com",
      "authorizationServerId": "default",
      "clientId": "$env(OKTA_CLIENT_ID)",
      "clientSecret": "$env(OKTA_CLIENT_SECRET)"
    }
  }
}

oktaDomain must be an Okta org domain like acme.okta.com or acme.oktapreview.com. Do not include https://, a trailing slash, or an authorization server path.

Pairing

Pair this policy with McpTokenExchangeInboundPolicy and McpProxyHandler, the same as McpOAuthInboundPolicy. Only one MCP OAuth policy is allowed per project; attach the same policy by name to every MCP route.

Read more about how policies work