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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds genuinely new behavioral content: the result is membership-scoped and includes the caller's role per board, which matters because there is no output schema. It omits ordering/pagination behavior, so it is not fully transparent.

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 sentence, front-loaded with the verb and resource, with the scope qualifier and returned field packed into a single clause. No filler, no redundancy with the title or annotations.

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, read-only list tool with full annotation coverage, the description supplies the one thing structured fields cannot: what each entry contains (board plus the caller's role). It is nearly complete, lacking only ordering/format detail, which is minor for a small membership-scoped collection.

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 the schema imposes nothing to interpret; per the rubric, 0 params sets a baseline of 4. The description correctly implies no filtering or paging inputs are accepted, consistent with the empty schema.

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 (list) and resource (boards) plus the scope of the result (boards you are a member of, with your role). It is clearly a read/list operation, but it never clarifies its relationship to adjacent list tools such as fenbs_list_projects or fenbs_listings, so the agent must guess how a 'board' differs from a 'project'.

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 when-to-use guidance and names no alternative. It does not tell the agent whether this is the entry point for discovering board IDs needed by other tools, nor when to prefer fenbs_list_projects instead. Scope wording ('you are a member of') is a filter, not usage direction.

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