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

Annotations already declare readOnly, idempotent, open-world, non-destructive, so safety is covered. The description adds that results are 'the best links' (i.e., ranked link results rather than content bodies) and scopes the corpus to ~1,000 free pages, but says nothing about pagination, truncation, or how ranking behaves when the limit is hit.

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 front-loaded sentence with the action and corpus stated first, followed by a parenthetical enumeration. The list of topics is long but earns its place by telling the agent what kinds of queries will match; nothing is redundant.

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 usefully notes that the return value is a set of best-matching links. However, for a two-parameter search tool it omits query-format guidance and limit semantics, which an agent needs to call it correctly on the first try.

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?

Schema description coverage is 0% with two parameters, so the description carries the full burden and falls short: it never explains what form 'query' should take (disease name, medicine name, free-text question) or that 'limit' exists and is capped at 10. Only the corpus examples give indirect hints about valid query terms.

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 gives a specific verb ('Searches') and resource ('MedDroid's free health guides') and enumerates the content domain (diseases A–Z, medicines A–Z, lab report readers, comparisons, BP/sugar/thyroid/fever/dengue), which lets an agent distinguish it from an encyclopedia-style lookup. It does not explicitly differentiate itself from siblings like explain_lab_report or explain_lab_result, which cover adjacent ground.

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 only implied: the description makes clear this is a discovery/search tool for health content, so an agent can infer 'use this to find a guide page'. There is no explicit when-to-use, when-not-to-use, or named alternative (e.g., use explain_lab_report for interpreting a specific result).

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