Features

Agent Sdk

Dedicated SDK for agentic workflows — agent sessions, token lifecycle, and authorization requests

Token Delegation

Issue scoped tokens an agent can use downstream without exposing user credentials

Human In The Loop

Pause agent execution and require explicit user approval before proceeding

Fga

Fine-Grained Authorization — relationship-based or attribute-based access control, not just role-based

Mcp Support

Unverified — check source_urls

Async Authorization

Non-blocking approval workflows — agent continues and gets notified when approval is granted

Keycloak

Keycloak is the default choice for organizations that need self-hosted identity and are already in the Red Hat or Java enterprise ecosystem. It's been around since 2013 and has broad adoption in financial services, healthcare, and government sectors.

For AI agents operating within enterprise on-prem environments where Keycloak is the existing identity provider, agents can use standard OAuth 2.0/OIDC flows to authenticate and obtain tokens. Token delegation (via Token Exchange) is supported.

The honest assessment for agentic development: Keycloak was not designed with AI agents in mind. There's no agent SDK, no FGA, no human-in-the-loop primitives, and the developer experience is significantly more friction than modern alternatives. It earns its place on this list because it's unavoidable in many enterprise environments — not because it's the best choice for new agent projects.

Agent-specific features:

OAuth 2.0 / OIDC token issuance for agent authentication
Token Exchange (RFC 8693) for delegation flows
Standard M2M client credentials flow
Admin REST API for programmatic management

Keycloak

Best for

Limitations

Features

Frameworks

SDK Languages

Compliance

Keycloak