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

Annotations already establish the safe read-only profile, and the description adds genuinely non-derivable behavior: the call is free, spends no Search Console quota and no paid-provider credit, and never calls an SEO data provider. The null semantics for audit/rankTracking/webAnalytics (real 'not set up' rather than zero) is exactly the kind of semantic disclosure structured fields cannot carry.

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-loaded with the return shape, then cost, then null semantics — a sensible ordering. It is slightly redundant, saying essentially the same thing twice ('no credits are spent' and 'never spends ... a paid-provider credit') and using a lengthy em-dash aside, which costs a point.

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?

With no output schema, the description must carry the return contract itself, and it does: card granularity, the three data blocks, and the null-vs-zero rule. There is no output schema and no parameters, so nothing an agent needs in order to call this correctly is missing.

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?

Zero parameters, so there is nothing to disambiguate and the baseline is 4. The description appropriately frames the tool as taking no arguments by describing the whole-organization scope, which is the only parameter-relevant fact available.

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+resource and spells out the exact return shape: one card per active project with latest audit health, rank-tracker status, and trailing-7-day web-analytics sessions. It also distinguishes itself from the many single-domain get_* siblings by explicitly declaring what is out of scope (GSC, backlinks).

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?

Gives clear context for use — a cross-project roll-up drawn from the database only — and effectively routes the agent away from SEO-provider lookups by noting GSC and backlinks are deliberately excluded. It stops short of naming the alternative tools an agent should call for that data, so it is clear context without explicit alternatives.

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