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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is fully covered structurally. The description adds only that public_url is part of the result, which is a small amount of genuine behavioral context beyond the annotations.

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, front-loaded with the verb and resource, with the parenthetical return-field hint kept brief. No filler, though the parenthetical is only marginally load-bearing.

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 is simple and the annotations plus fully documented single parameter cover most needs, but with no output schema the description names only one returned field (public_url), leaving the rest of the project payload shape undisclosed.

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 is a single required parameter documented at 100% schema coverage ('Project ID'), so the schema carries the semantics. The description's 'by ID' merely restates the param's purpose without adding format, range, or lookup-origin guidance.

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?

States a specific verb and resource ('Get a single changelog project by ID') and implicitly contrasts with the list_projects sibling by emphasizing single-record retrieval. It is clear what the tool returns at a high level, though it never names the sibling it complements.

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 phrase 'by ID' implies this is the lookup path once an ID is known, contrasted implicitly with list_projects, but no explicit when-to-use or when-not-to-use guidance is given and no alternative is named.

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