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

With no annotations, the description carries the full behavioral burden. It helpfully enumerates the change states present in the history (waiting, merged, declined, switched off), which signals the scope of returned data, but it says nothing about ordering, recency limits, pagination, or output shape — gaps that matter since there is no output schema.

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?

A single tight sentence, front-loaded with the resource. The phrasing 'commits to how the firm works' is slightly abstract but earns its place by conveying the domain and the state vocabulary in one clause.

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 no-argument read tool with no annotations or output schema, the description should at least hint at volume, ordering, or what a history entry contains. It sketches the conceptual content well but leaves the agent guessing about recency ordering and result size.

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 tool takes zero parameters, so there is nothing for the description to disambiguate; baseline 4 applies. The description correctly implies no inputs are needed to fetch the history.

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 names the resource (the repository's history of commits about 'how the firm works') and clarifies what states are included, but never states a verb or action such as 'list' or 'returns'. It is enough to know the tool concerns version history, yet the agent must infer that invoking it simply retrieves that history.

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?

There is no when-to-use guidance and no reference to alternatives like firm_files, read_firm_file, or decide_firm_change. The agent is left to guess whether this tool shows pending changes it must decide on or is purely a read-only log.

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