list_invariants_for_file

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

With no annotations, the description carries the full burden of behavioral disclosure, but it only repeats the action 'list' and the resource 'file'. It does not mention side effects (likely read-only), error conditions, ordering, filtering, or what data is actually returned.

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?

One short sentence is concise, but this is under-specification rather than efficient brevity. The description omits essential details that an agent needs, so it does not earn credit for structure.

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?

The tool has no output schema and no annotations, so the description must provide nearly all context. It fails to state how the file is selected, what invariants look like, or what a successful call returns, leaving the agent with only the tool name as guidance.

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 zero declared parameters, so the description cannot add parameter-level detail beyond the schema. The 100% schema coverage and empty parameter list make the missing specification less harmful, though the description does not explain how 'file' is supplied.

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 'list invariants for file' is a near-verbatim restatement of the tool name. It identifies the action and resource but does not clarify what 'invariants' means in this context or how it differs from the sibling tools, making it tautological rather than informative.

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 no guidance about when to use this tool instead of alternatives such as search_past_failures or check_patch_against_memory. There is no context, prerequisite, or exclusion information, leaving the agent to guess.

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