get_changelog

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

With no annotations, the description carries the full burden, and it provides substantive behavioral context: 'append-only' implies immutability, 'hash-chained' indicates integrity protection, and 'recompute recipe' and 'independent timestamp state' describe how the changelog is structured or reproduced. It could add explicit read-only or error behavior, but these traits are meaningful and non-generic.

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 dense sentence with no filler. However, the qualifiers are packed into a noun phrase rather than a readable tool behavior statement, which slightly reduces clarity despite the efficient length.

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 getter, the description gives enough conceptual content to understand what is returned, but it lacks an explicit statement of the return value or behavior and offers no comparison to nearby siblings. Without an output schema or annotations, a slightly more actionable description would make the tool easier to select and invoke correctly.

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 has zero parameters and schema coverage is trivially 100%, so no parameter documentation is needed. The description adds context about the object being retrieved, which is sufficient for a parameterless getter.

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 a specific resource, the append-only hash-chained register changelog, and the tool name 'get_changelog' implies retrieval. It is not a tautology and gives more specificity than 'changelog', but it lacks an explicit verb such as 'returns' or 'lists', so it stops short of top-tier clarity.

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 guidance on when to use this tool versus alternatives like get_history, get_register, or get_register_pack. The description does not state a preferred use case, exclusions, or any conditions that should route an agent to a sibling tool.

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