get_package_index

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

With no annotations provided, the description carries the burden of disclosing behavior. It correctly frames the operation as fetching package metadata despite the POST endpoint, which reduces concern about mutation. However, it does not mention potential side effects, response size, or error behavior; for a zero-parameter read this is a moderate but not severe gap.

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 a single sentence with no filler. It front-loads the action and resource, then adds the endpoint and the returned content. Every part 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 zero-parameter tool with no output schema and low complexity, the description fully conveys what the agent will get (versions and artifacts) and why the tool exists. No additional operational detail is necessary for correct invocation.

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?

There are no parameters, so there is nothing for the description to add beyond what the schema already states. The description focuses on the resource semantics instead, which is appropriate for a zero-parameter tool.

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 uses a specific verb ('Get') and a specific resource ('Tdarr package index'), and clarifies the semantic content: 'the versions and artifacts the updater can install.' This makes it clearly distinct from sibling tools like check_for_update or update_node.

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 implies the tool is for inspecting available updater versions and artifacts, which gives the agent a reasonable context for when to use it. However, it does not explicitly state when to prefer it over related siblings such as check_for_update, nor does it mention any exclusions or alternative tools.

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