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

Annotations already declare readOnlyHint and idempotentHint, so the safety profile is covered. The description adds useful behavioral context: pagination ('Paginated metadata') and a notable detail that 'values are not copied' in the Seiche handoff, which goes beyond annotations. No contradiction exists.

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?

The description is two sentences, front-loaded with the core purpose. Each clause adds value: content categories, pagination behavior, and the Seiche handoff with its non-copying note. No fluff or redundancy.

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 description mentions what the catalog contains and that pagination retains source clocks, rights, and access states, giving some idea of the return shape. However, it does not specify the exact output structure or whether the Seiche context is included in each item's metadata. Given no output schema, a bit more detail on the return payload would improve completeness.

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 input schema has only two parameters (limit, offset) with 0% schema description coverage, meaning the description must compensate. While 'Paginated metadata' hints at pagination, the description does not explain how limit and offset behave or their constraints (e.g., maximum limit 25). This is a gap for an agent needing to invoke correctly.

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?

The description clearly states the tool's purpose: 'Discover every Palimpsest dataset' and lists specific content areas (China economic histories, external trade, regional research, information controls, model evaluations). It also mentions the Seiche research_network handoff, which distinguishes it from sibling tools focused on specific signals or newsroom data.

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 implies this is the comprehensive catalog for all datasets, but it does not explicitly state when to use it versus alternatives like 'list_signals' or 'get_signal'. No exclusionary guidance or conditions are provided beyond the general scope.

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