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

Annotations mark this as a non-read-only, open-world mutation, and the description goes beyond them by disclosing the real-world exposure — timetable is publicly visible and a connected assistant answers from it — which is exactly the consequence an agent should weigh. It does not mention reversibility (there is a take_branch_offline sibling) or confirmation/failure behavior, so it is strong but not complete.

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?

Two short sentences with the effect stated first and the guardrail after; nothing is padded. The phrasing 'Confirm a branch's classes' and 'the classes tick' is slightly oblique and could be tighter, but the whole thing earns its place.

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 one-parameter mutation with no output schema, the description covers the effect, the public/assistant exposure, and the consent precondition — enough for correct selection and invocation. Only the absence of undo/offline guidance keeps it from full marks.

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 coverage is 100% and the single parameter 'id' is documented in the schema, so the description carries little extra parameter burden. 'Needs the classes tick at that branch' refers to branch state rather than the id itself, so it adds no meaning about the parameter beyond the schema.

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?

Uses a concrete verb and resource ('make a branch live') and immediately explains the observable effect: the timetable appears on the public page and a connected assistant answers from it. That clearly separates it from the plural make_branches_live and from take_branch_offline, though it never names those siblings explicitly.

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?

'Only when the person says this branch is ready' gives an explicit consent-based precondition, and 'Needs the classes tick at that branch' states a prerequisite state, both of which tell an agent when the call is valid. It stops short of naming alternatives or stating when not to use it beyond that precondition.

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