Skip to main content
Glama
vengtoo

@vengtoo/mcp-server

by vengtoo

unassign_policy

Remove a policy assignment from a subject, role, or group to immediately revoke the access granted by that policy.

Instructions

Remove a policy assignment from a subject, role, or group. Access granted by this policy is revoked immediately.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
entity_idYesUUID of the subject, role, or group
policy_idYesPolicy UUID
entity_typeYesEntity type
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the burden. It adds the behavioral trait that access is revoked immediately, but omits details like required permissions or whether the operation is reversible.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two succinct sentences, no extra words. First sentence states the action, second adds a key consequence. Highly efficient and front-loaded.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple delete tool, the description is fairly complete given no output schema. It covers the action and immediate effect. Lacks error conditions or prerequisites, but still adequate.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so parameters are already described. The description mentions entity types (subject, role, group) but the schema enum already covers these. No additional semantics added.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'Remove' and the specific resources 'policy assignment from a subject, role, or group', and distinguishes from sibling tools like assign_policy by indicating the reversal of access.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies when to use the tool (to remove a policy assignment) but does not provide explicit guidance on when not to use it or mention alternative tools like unassign_role_from_subject for role removals.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/vengtoo/mcp-server'

If you have feedback or need assistance with the MCP directory API, please join our Discord server