AGENT IDENTITY & PERMISSIONS
Know what every agent can access and do
AI agents act through identities, credentials, and permissions. Eyrane helps security teams understand which identity an agent uses, what access it inherits, and the potential impact of every action.
EYRANE CONTEXT
Potential impactCustomer data · production records · external actionsTHE DEFINITION
What is AI agent identity?
AI agent identity is the digital identity an AI agent uses to authenticate to applications, APIs, tools, and data. It may be a service account, workload identity, API credential, OAuth token, or delegated user identity. Securing agent identity requires understanding both the identity itself and the effective permissions it gives the agent.
- Identify which credentials agents use
- Map inherited permissions
- Enforce least privilege
- Detect excessive access
- Understand effective permissions
- Reduce agent blast radius
- Investigate actions back to an identity
THE SECURITY BOUNDARY
Agents inherit the power of their identities
A model may be harmless on its own. But an agent authenticated as a privileged identity may query sensitive data, change production systems, trigger workflows, send messages, or call privileged APIs.
The real security boundary is often not the model. It is the identity behind the agent.IDENTITY TYPES
How AI agents authenticate
Agent identities can differ in scope, lifetime, ownership, auditability, inherited permissions, and revocation model.
EFFECTIVE PERMISSIONS
What can the agent actually do?
Configured permissions show what an identity appears to have. Effective permissions show what the agent can reach when roles, groups, delegated permissions, tools, and downstream access paths are considered together.
LEAST PRIVILEGE
Give agents only the access they need
Security teams should ask whether an agent needs write access, production credentials, every customer record, or the ability to invoke a sensitive tool without approval.
Read tickets
Modify tickets
Export customers
Issue refunds
Query warehouse
Post externally
Read tickets
Modify assigned tickets
Sensitive actions · require approvalEXCESSIVE ACCESS
Find access that exceeds the agent’s job
Overprivileged agents can result from reused service accounts, broad OAuth scopes, inherited user permissions, stale credentials, default cloud roles, overly permissive tools, shared secrets, or permission accumulation over time.
An agent should not inherit more authority than its task requires.
Explore Overprivileged AgentsACCESS × AUTONOMY
Permissions and autonomy are different risks
Permission is what the agent is technically allowed to do. Autonomy is what it can decide and execute without human review.
BLAST RADIUS
Understand the blast radius before an agent acts
Blast radius is the systems, data, users, or workflows that could be affected if an agent, credential, or tool is compromised or behaves unexpectedly.
CREDENTIAL LIFECYCLE
Track the credentials behind agent actions
Understanding a credential means tracking its source, owner, scope, expiry, rotation, environment, usage, and revocation path.
NON-HUMAN IDENTITIES
Agents are part of the non-human identity problem
Non-human identities include service accounts, workload identities, API keys, tokens, automation identities, and other credentials used by machines rather than people.
AI agents add a new dimension because they do not merely authenticate. They make decisions and take actions through those identities.
Identity + autonomy is central to Eyrane’s security model.USER-DELEGATED ACCESS
Know when an agent is acting as a user
Delegated access can make attribution difficult when an agent inherits broad user permissions or acts outside the user’s expected context.
MCP + IDENTITY
Understand the identity behind every tool call
An MCP server may connect an agent to a tool that authenticates to a downstream service. The agent may not directly hold the credential, but it can still exercise the permission.
IDENTITY → RUNTIME CONTROL
Turn identity context into runtime policy
Action context brings identity, permissions, and environment into the decision before sensitive operations happen.
INVESTIGATION + ATTRIBUTION
Trace agent actions back to identity
Security teams should be able to ask which agent performed an action, which identity authenticated it, which token or role authorized it, which tool executed it, and what resource changed.
FROM IDENTITY TO CONTROL
Make every stage of access legible
COMMON QUESTIONS
Questions security teams ask about agent identity
What is AI agent identity?
AI agent identity is the digital identity an AI agent uses to authenticate to applications, APIs, tools, and data. It may be a service account, workload identity, API credential, OAuth token, or delegated user identity.
What identities do AI agents use?
AI agents may use service accounts, workload identities, API keys, OAuth tokens, cloud roles, user-delegated credentials, application tokens, secrets, or MCP-provided credentials.
What is a non-human identity?
A non-human identity is a machine-operated account, token, key, role, or credential used by software rather than a person. AI agents add decision-making and autonomy to this identity problem.
Why do AI agents need least privilege?
AI agents need least privilege so the identity behind an automated workflow has only the access required for its task, reducing the systems and data it could affect.
What are effective permissions for an AI agent?
Effective permissions are what an agent can actually reach after direct roles, groups, delegated access, tools, and downstream connections are considered together.
What is an overprivileged AI agent?
An overprivileged AI agent can access more applications, data, or tools than its workflow requires. See Eyrane’s overview of overprivileged agents for more context.
How is agent identity different from human identity?
Agent identity describes the credentials and access path software uses, while agent security must also account for the decisions and actions taken through that identity.
How do MCP servers affect agent permissions?
MCP servers can expose tools that authenticate to downstream services, so an agent may exercise permissions it does not directly hold.
What is agent blast radius?
Agent blast radius is the systems, data, users, or workflows that could be affected if an agent, credential, or tool behaves unexpectedly or is compromised.
How can enterprises secure AI agent credentials?
Enterprises can secure AI agent credentials by inventorying their source, owner, scope, lifetime, environment, usage, rotation, and revocation path.
How does identity context improve runtime security?
Identity context helps a runtime decision account for who is acting, what permissions apply, which resource is targeted, and how sensitive the requested action is.
AGENT IDENTITY & PERMISSIONS
Know the identity behind every agent action.
Understand agent credentials, permissions, access paths, and potential blast radius before sensitive actions happen.