What are the best AI agent identity tools in 2026?

Aembit leads for secretless, policy-based agent and workload access, SlashID for unified identity across humans, machines, and agents, P0 Security for just-in-time least privilege, Corsha for MFA on automated API access, and Astrix Security (now part of Cisco) for discovering and governing agents and NHIs. The category is new and consolidating fast.

What does an AI agent need for identity?

An agent needs an identity that is scoped to its task, delegated from the user it acts for, fully auditable, and instantly revocable, which static service accounts do not provide. See our guide on securing AI agent identities.

How do these differ from NHI security platforms?

NHI security platforms focus on discovering, owning, and right-sizing all non-human identities, while agent identity tools emphasize granting agents secretless, least-privilege access at runtime. Many programs use both; see the best NHI security platforms ranking.

Can I still buy Astrix Security?

Not as a standalone product. Cisco completed the acquisition on 29 June 2026 and Astrix ended standalone sales of new licenses on 30 June 2026. Existing customers keep service under current agreements; new buyers get the capability through Cisco's Duo, Splunk and Identity Intelligence products.

Do these tools cover AI assistants like hosted chatbots or third-party MCP servers?

Mostly not. Aembit and P0 Security govern agents and workloads you run yourself, and P0 does not document MCP server support. Astrix extends discovery to AI agent and MCP-style connections in SaaS. Check the vendor's scope against the agents you actually run.

Ranking · segment · 7 min

Best AI Agent Identity Tools: Top 5 for Autonomous Access

Giving AI agents scoped, delegated, revocable identities and secretless access to tools and APIs.

By SWI Community Team · Updated 2026-10-16Scored on our 10-dimension rubric

An AI agent identity tool has to answer two questions a service account never could: on whose behalf is this agent acting, and how fast can we take its access away? The five tools below answer them from different ends.

How we ranked

Secretless runtime access. Short-lived credentials issued from verified workload or agent identity, instead of API keys pasted into prompts and config files.

Delegation. Whether access is narrowed to the human the agent acts for, and whether every action traces back to that person.

Discovery. You cannot govern agents you have not found. Some tools inventory agents and their OAuth grants; others only enforce.

Independence. Agent and NHI vendors were acquired at a rapid pace in 2026, so check who you can still buy from.

Applied to these five

Aembit is a runtime access broker: it verifies workload identity, enforces conditional policy and injects ephemeral credentials. It requires deploying edge components and does not cover human SSO or MFA.

SlashID spans human authentication and non-human identity security in one developer platform, with usage-based pricing and a free tier; depth in each area is still growing.

P0 Security is the strongest on delegation, evaluating agent access from the invoking human, the agent and the resource together, with session replay. It publishes AWS Marketplace pricing (5,000 dollars for 100 users a year) and holds SOC 2 Type II, but not ISO 27001 or FedRAMP.

Corsha adds rotating, MFA-like trust to API and machine-to-machine traffic, with self-hosted options for air-gapped and OT networks.

Astrix Security is the discovery pick, but it is now part of Duo owner Cisco and no longer sold standalone.

Pick by scenario

Removing hardcoded secrets from agents you deploy: Aembit.
Agents act for employees and need user-scoped access: P0 Security.
Regulated, government or OT API traffic: Corsha.
Building an agentic product and want one identity layer: SlashID.
Finding the agents already connected to your SaaS: Astrix through Cisco, or see the NHI security platforms ranking.

Where to go next

Read securing AI agent identities and non-human identity security. Head to head: Aembit vs Astrix Security. Scores follow our methodology.

Aembit4.4/5 overall

Workload and agent identity for secretless, policy-based access.

Aembit issues short-lived, policy-based credentials so agents and workloads authenticate to APIs and services without stored secrets, directly addressing the scoped, revocable access autonomous agents need.

Best for: Teams enforcing secretless, policy-based agent access

Watch out: Access-focused; pair with discovery and governance

Read the full Aembit review →

SlashID4.2/5 overall

Identity and access infrastructure spanning humans, workloads, and agents.

SlashID provides identity and authorization primitives designed to cover human, machine, and agent identities together, appealing to teams building agentic systems that need consistent identity across all actors.

Best for: Teams building agentic systems needing unified identity

Watch out: Emerging platform; validate the primitives you need

Read the full SlashID review →

P0 Security4.2/5 overall

Just-in-time, least-privilege access governance for cloud and identities.

P0 Security governs access to cloud and infrastructure with just-in-time grants and least privilege. Since February 2026 it evaluates agent access at runtime from the invoking human, the agent, the tool authorization and the resource entitlements together, narrowing broad agent permissions to the end user's actual scope.

Best for: Teams applying JIT least privilege to agent and human access

Watch out: Governance-led; scope for your cloud footprint

Read the full P0 Security review →

Corsha4.1/5 overall

Machine identity and MFA for automated, API-driven access.

Corsha brings a form of multi-factor authentication to machine-to-machine and API traffic, adding a dynamic identity layer that helps ensure only trusted automated clients, including agents, can call sensitive APIs.

Best for: Teams securing automated API access from trusted clients

Watch out: Focused on API access rather than broad governance

Read the full Corsha review →

Astrix Security (now Cisco)4.4/5 overall

Discovery and governance of NHIs and AI agents across SaaS and cloud.

Astrix discovers and governs non-human identities including AI agents and their connections, mapping access and flagging risk. Cisco completed its acquisition on 29 June 2026 and Astrix ended standalone sales of new licenses on 30 June 2026; the capability is being folded into Duo, Splunk, and Cisco Identity Intelligence.

Best for: Teams that need to discover and govern agents and NHIs

Watch out: No longer sold standalone; new buyers get it through Cisco

Read the full Astrix Security (now Cisco) review →

At a glance

#	Vendor	Score	Best for
1	Aembit	4.4/5	Teams enforcing secretless, policy-based agent access
2	SlashID	4.2/5	Teams building agentic systems needing unified identity
3	P0 Security	4.2/5	Teams applying JIT least privilege to agent and human access
4	Corsha	4.1/5	Teams securing automated API access from trusted clients
5	Astrix Security (now Cisco)	4.4/5	Teams that need to discover and govern agents and NHIs

Frequently asked questions

What are the best AI agent identity tools in 2026?: Aembit leads for secretless, policy-based agent and workload access, SlashID for unified identity across humans, machines, and agents, P0 Security for just-in-time least privilege, Corsha for MFA on automated API access, and Astrix Security (now part of Cisco) for discovering and governing agents and NHIs. The category is new and consolidating fast.
What does an AI agent need for identity?: An agent needs an identity that is scoped to its task, delegated from the user it acts for, fully auditable, and instantly revocable, which static service accounts do not provide. See our guide on securing AI agent identities.
How do these differ from NHI security platforms?: NHI security platforms focus on discovering, owning, and right-sizing all non-human identities, while agent identity tools emphasize granting agents secretless, least-privilege access at runtime. Many programs use both; see the best NHI security platforms ranking.
Can I still buy Astrix Security?: Not as a standalone product. Cisco completed the acquisition on 29 June 2026 and Astrix ended standalone sales of new licenses on 30 June 2026. Existing customers keep service under current agreements; new buyers get the capability through Cisco's Duo, Splunk and Identity Intelligence products.
Do these tools cover AI assistants like hosted chatbots or third-party MCP servers?: Mostly not. Aembit and P0 Security govern agents and workloads you run yourself, and P0 does not document MCP server support. Astrix extends discovery to AI agent and MCP-style connections in SaaS. Check the vendor's scope against the agents you actually run.

Last reviewed October 16, 2026By SWI Community TeamSuggest a correction How we research

Independent and community-driven, no sponsorship. Rankings reflect ourcapability rubricand editorial judgment. See the fullrankings indexand head-to-head comparisons.