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

Annotations already declare readOnlyHint, idempotentHint and openWorldHint=false, so safety is covered. The description goes beyond that by disclosing conditional return behavior: a discharge table yields figures only after datasheet verification, otherwise just the link and page. That is real behavioral context the annotations cannot express, though the condition itself is phrased vaguely.

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 short sentences, front-loaded with the core purpose. The second sentence about discharge tables is somewhat cryptic but does not pad the description.

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-value burden, and it does so only partially: it hints at 'link and page' versus figures for discharge tables, but never clarifies what 'full text' means for a product series or how the non-discharge case is shaped. Adequate but leaves an agent guessing at the response.

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 is a single parameter with 100% schema description coverage, so the schema already explains that id comes from search, find_series or get_documents. The description adds only the notion that exactly one result is read, which is a marginal restatement rather than new semantics.

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: 'Read the full text of one result from search', and enumerates the item types it covers (web page, PDF, product series). It clearly separates itself from search by being single-result retrieval, though it doesn't explicitly contrast with get_documents or find_series, which also produce ids.

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?

Usage is implied by 'one result from search' — fetch comes after search. There is no explicit statement of when to prefer this tool over get_documents, find_series, or search, and no prerequisites or exclusions are given.

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