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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds meaningful behavioral context by disclosing the return contents (customer request title/description and conditional release_note fields), though it omits pagination or volume behavior.

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?

Two dense sentences with the core purpose front-loaded and no filler. Slightly information-heavy in the second sentence but every clause earns its place by describing return fields.

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 read-only list tool with no output schema, the description usefully explains what each candidate carries, compensating for the absent output schema. Missing only secondary details like pagination and ordering.

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?

With 50% schema coverage, the description adds only that board_id is an optional narrowing filter. It gives no semantics for account_id beyond the schema's own 'From list_boards' note, and does not explain accepted board_id format.

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 with scope: 'Features marked done since the last published changelog for an account'. This clearly distinguishes it from siblings like get_changelog and list_changelogs, which retrieve existing changelogs rather than candidates for the next one.

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 'what the next changelog should probably cover' implies the drafting use case, and 'Optionally narrowed to one board' clarifies the filter condition. However, it never names explicit alternatives (e.g. use get_changelog for published output) or states when not to use it, leaving usage implied.

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