collection_update_collection_permissions

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

No annotations are provided, so the description carries the full burden. It mentions 'ctx: FastMCP context for resource change notifications', which hints at side effects (notifications), but doesn't disclose whether permissions are replaced or merged, whether 'remove' on a non-existent permission errors, or whether the operation is idempotent. The 'Returns: Success confirmation' is minimal and doesn't describe failure modes or partial success behavior.

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

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

The description is compact and front-loaded with the core purpose, but the Args/Returns format is boilerplate and includes 'ctx' which is an implementation detail (FastMCP context) that an agent doesn't need to know to call the tool. The structure is acceptable but not exemplary.

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

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

For a mutation tool with no annotations and no output schema details, the description is incomplete. It doesn't explain the effect of 'add' vs 'remove' on existing permissions, whether the operation is additive or replaces all permissions, or what 'Success confirmation' actually contains. The output schema exists but the description doesn't reference it, and the return value description is vague.

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

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

Schema description coverage is 0%, so the description must compensate. It lists all four parameters with brief explanations, but the explanations are thin: 'permission_level' says '(owner, editor, viewer)' but doesn't specify allowed values or whether they're case-sensitive; 'action' says '(add, remove)' but doesn't explain the default behavior or what happens if omitted. The description adds some meaning beyond the bare schema, but not enough to fully compensate for zero schema coverage.

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

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

The description states a specific verb ('Update') and resource ('permissions for a service collection'), which clearly distinguishes it from sibling tools like collection_create_collection or collection_add_resource_to_collection. It doesn't explicitly name a sibling alternative, but the resource+action combination is unambiguous.

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

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

No guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., collection must exist, user must exist), nor does it explain when to use 'add' vs 'remove' actions. The context is implied by the name and description, but there's no explicit when-to-use or when-not-to-use guidance.

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