Per-Tool Authorization
Per-tool authorization decides whether an agent may invoke a specific tool, rather than granting or denying access to an entire server, session, API, or account.
Why this matters for AI agents
Server-level or session-level access grants are too coarse for agents. An agent that is permitted to read user data from an API should not be permitted to delete it from the same API.
How AgntID relates
Per-tool authorization is one of AgntID's core enforcement primitives—each tool in the catalog has its own policy, and each invocation is evaluated individually.
The static IAM gap
IAM assigns permissions at the service or resource level. It does not distinguish between individual tools exposed by a service or session.
Related phrases
Related terms
Frequently asked questions
What is per-tool authorization?
Per-tool authorization decides whether an agent may invoke a specific tool, rather than granting or denying access to an entire server, session, API, or account.
Why is server-level access too coarse for agents?
An agent permitted to read user data from an API should not be permitted to delete it from the same API. Per-tool authorization enforces this distinction that server-level grants cannot.
How does AgntID implement per-tool authorization?
AgntID makes per-tool authorization one of its core enforcement primitives. Each tool in the catalog has its own policy, and each invocation is evaluated individually.
Secure every agent tool call at execution time.
AgntID gives infrastructure teams scoped, ephemeral access control for AI agents without replacing IAM, MCP servers, tools, or agent frameworks.