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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive), so the bar is lower, and the description still adds real context: no authentication required and the fact that long topics are paged rather than truncated with a page-count footer. It omits any note on response size or topic-recency, but the incremental value is solid.

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 core action, followed by a single dense topic enumeration and a one-line access note. The topic list is long but each item earns its place as a selection aid; no filler sentences.

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 does the work of explaining that content is paged with a footer indicating page count, and it gives the full topic vocabulary. Complete enough to invoke correctly, though it could say more about the shape of the returned documentation.

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 coverage is 100% and the description's topic list largely mirrors the schema's enum (even dropping a couple of entries), so it adds little for 'topic'. The paging contract it mentions is also already stated in the 'page' schema description, meaning the description largely restates structured data. Baseline 3 applies.

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 ('Retrieve SocialCrawl API documentation') and enumerates the exact topic space, so an agent knows precisely what comes back. It does not, however, differentiate itself from overlapping siblings such as socialcrawl_pricing (also a documented topic), socialcrawl_discover, or socialcrawl_list_endpoints.

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?

Implies usage (fetch docs before calling the API) and adds a practical access note ('No API key required'), which is genuinely useful for a cold-start agent. It never states when to prefer this tool over the doc-adjacent siblings (pricing, discover, list_endpoints), and gives no explicit when-not.

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