Identity & Permission
8 tools
SPIFFE / SPIRE
CNCF-graduated workload identity standard and its reference implementation.
Open source★ 2,569
AGNTCY Agent Identity
Linux Foundation-hosted identity service for agents, MCP servers and multi-agent systems.
Open source★ 67Caveat
Agent Identity Protocol (AIP)
An IETF Internet-Draft proposing agentic authentication and policy enforcement, submitted with NVIDIA involvement.
Standard / specCaveat
Auth0 for AI Agents
Auth0's agent auth suite: user login, delegated authorization and token vault.
ProprietaryCaveat
Microsoft Entra Agent ID
Agent identity objects inside the Microsoft Entra suite, tied to Agent 365.
Proprietary
OAuth 2.1 + MCP Authorization
The open authorization stack MCP servers are expected to implement.
Standard / specCaveat
Okta for AI Agents
Okta's agent identity and governance offering, GA in April 2026.
ProprietaryCaveat
PEDIGREE
An IETF Internet-Draft extending SPIFFE with per-agent delegation and scope reduction.
Standard / specCaveat