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

Annotations already declare readOnly/idempotent/non-destructive, but the description adds the genuinely non-obvious fact that this call performs no action itself and merely returns a step-by-step procedure (screens, buttons, fields) that must be executed via cotlet_browser_*. That prevents a serious misread of a tool named 'list_releases'. It stops short of 5 because it says nothing about the shape or length of the returned guide or any rate/account constraints.

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?

Purpose is front-loaded, but 'from ChatGPT, Claude or any AI agent' is pure filler, and the dated 'checked 28 Oct 2026' API research note is long for what it contributes. The most decision-relevant fact (it returns instructions, not data) arrives in the second sentence rather than the first.

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 zero-parameter, no-output-schema tool, the description covers what is returned (a step-by-step procedure naming screens, buttons and fields), that it has no side effects, and which sibling family completes the task. The main remaining gap is scope: it does not say whether the guide covers filtering, pagination or large catalogs.

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?

The input schema is an empty object with zero parameters, so there is nothing for the description to disambiguate; the baseline for a parameterless tool applies. The description does not need to and does not add parameter meaning.

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 first sentence names a specific verb and resource ('List releases in the user's own DistroKid account'), and the second immediately corrects what the tool actually returns ('Returns how to do it in DistroKid step by step'), so an agent is not left expecting a JSON array of releases. The residual tension between the name 'list_releases' and the actual guide-producing behavior keeps this from a 5, since an agent skimming the title could still mis-select.

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?

The description gives a workflow: call this, then act with the cotlet_browser_* tools in the DistroKid Cloud Browser, and it states the tool 'opens nothing by itself'. That is useful sequencing guidance but it is about the follow-on step rather than about when to choose this over siblings like cotlet_app_guide or distrokid_get_release_status; no exclusions or alternatives are named.

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