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

Annotations already cover readOnly/idempotent/non-destructive, and the description adds meaningful context beyond that: it is reads-only, the counts-under-3 withholding rule (a privacy behavior), and the required admin sign-in. These are behavioral facts the schema and annotations do not convey.

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?

Front-loads the admin-only constraint and packs the return content into one dense but well-ordered sentence. Every clause carries information, though it is a long single sentence that could be split for readability.

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?

No output schema exists, so the description must convey what comes back, and it does so reasonably by listing categories of results and the withholding rule. Some shape-level detail (format, structure) is absent, but coverage is adequate for a zero-param read tool.

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 are zero parameters and schema coverage is effectively 100% (empty object), so the baseline is 4. The description adds no parameter detail because none exist, which is appropriate.

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: it returns an admin's partner perks list with concrete sub-content (deals due to re-confirm, linked programs changed/closed, invite-link join counts, last feed read). It clearly scopes to 'admin of a perks list' versus founders. It does not name a sibling tool explicitly, but the scope is unambiguous.

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?

Explicitly states who should use it ('only for the admin of a venture firm's or studio's perks list'), who should not ('A founder gets nothing from it'), and where changes belong ('changes are made on the admin page'). The auth condition is also stated ('Needs that admin's Programscape sign-in').

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