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

Annotations already cover safety (readOnlyHint=true, openWorldHint=false), so the bar is lower, and the description still adds real value: it discloses which fields the query is matched against and what the response contains (title, URL, description of the best matches). It leaves ranking semantics vague ("best matches") and says nothing about zero-result behavior, which keeps it from a 5.

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 sentences, both earning their place: the first defines the search scope, the second defines the return payload. Front-loaded with the resource and free of filler, restated names, or hedging.

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?

For a two-parameter read-only search with no output schema, the description is nearly sufficient — it declares both what is searched and what comes back, so an agent needs no more to invoke it. The only soft spot is result ordering/empty-result behavior, which matters slightly given the "best matches" phrasing.

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%, so a 3 is the baseline, and the description earns above that by explaining what the `query` parameter actually matches against (title, description, tags, category) — meaning the schema's generic "Words to search for" does not convey. It adds nothing extra about `limit`, but the schema already specifies the 1-10 range and default.

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 (search) plus the exact resource (Outfame's blog articles) and even enumerates the fields matched: title, description, tags, category. The resource is unmistakably distinct from every sibling (company facts, signup link, free tools, plans), so no agent could confuse them.

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 usage by naming the searchable fields, which tells the agent what kind of query will work, but it gives no explicit when-to-use/when-not guidance and names no alternative. Because no sibling overlaps this resource, the absence of exclusions is low-risk, but the guidance remains implicit rather than stated.

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