The request asks for an Active Directory authentication library. Source 1 is the aka.ms link manager page, which does not itself describe an AD authentication library, so it cannot be recommended on its own evidence. The candidates that show authentication capabilities are the generic identity platforms and libraries listed below; none of the pages explicitly names Active Directory, so the answer depends on which language or platform the user targets.
A question back: Which language or platform are you building in (for example .NET, Python, Node.js or Django), and do you need to authenticate against an on-premises Active Directory domain specifically?
- 1
Aka Active Directory Authenticationaka.msverified and signed
The aka.ms page is a link management service and its page text does not describe an Active Directory authentication library, though the product name and indexed actions reference .NET and ActiveDirectory.
for agents: .NET · Library · ActiveDirectory
- 2
WorkOSworkos.comverified and signed
Provides developer APIs and SDKs for enterprise single sign-on, directory sync and user management, including SAML and OIDC identity providers 2.
official:MCP server · WorkOS+5 community tools built for it
for agents: workos · workos · call_integration_api
- 3
Auth0auth0.comverified and signed
An authentication and authorization platform offering login, SSO, MFA and access control for applications, with an official MCP server 7.
official:MCP server · Auth0 MCP Server+20 community tools built for it
for agents: auth0 · authentication · authorization
- 4
Sources
- 1aka.ms Link Managementaka.ms · read just now
- 2WorkOS — Your app, Enterprise Ready.workos.com · read 2026-10-29
- 3Authlib 1.9.1 documentationdocs.authlib.org · read 2026-10-29
- 7Secure AI Agent & User Authentication | Auth0auth0.com · read 2026-10-29
For agents: the 10 actions behind this answer
.NET · Active Directory Authentication Library verified and signed
workos · workos verified and signed
WorkOS integration skills for AuthKit, SSO, Directory Sync, RBAC, Vault, Audit Logs, migrations, and API references.
· Authlib 1.9.1 documentation website read, tools not yet checked
· async-std website read, tools not yet checked
A Rust library for easy and understandable async programming
clerk-backend-api · clerk-backend-api verified and signed
Clerk Backend REST API explorer and executor. Browse tags, inspect endpoint schemas, and execute authenticated requests. Use when listing users, managing organizations, or calling any Clerk API endpoint.
authentication · @descope/core-js-sdk verified and signed
auth0 · auth0 verified and signed
Enterprise-grade auth, easy to implement. Add login, SSO, MFA, and access control to any app with framework-aware guidance.
· aio-libs Aiobotocore website read, tools not yet checked
· allauth website read, tools not yet checked
create-auth · create-auth verified and signed
Scaffold and implement authentication in TypeScript/JavaScript apps using Better Auth. Detect frameworks, configure database adapters, set up route handlers, add OAuth providers, and create auth UI pages. Use when users want to add login, sign-up, or authentication to a new or existing project with
Labels are the instruments' verdict and are never changed by ranking. Agents and robots get this same answer as JSON at /api/v1/find?q=…&answer=1 and through the MCP server.