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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does not state whether the tool performs a read-only lookup, what data it returns, whether it requires network access, or any rate limits. The description is too terse to disclose any behavioral traits beyond the basic fact that it looks up vulnerabilities.

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 extremely short, which is concise, but it sacrifices necessary information. The 'eco:name' hint is cryptic and not front-loaded with a clear explanation. It is not verbose, but it is under-specified rather than efficiently complete.

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?

Given the tool's complexity (querying a vulnerability database) and the lack of annotations, output schema details, or parameter documentation, the description is incomplete. An agent cannot reliably know what to pass as 'q' or what the response will contain. The presence of an output schema helps, but the input semantics remain unclear.

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%, and the only parameter 'q' has no description in the schema. The description's 'eco:name' hint is the only clue to what 'q' should contain, but it is ambiguous (does it mean ecosystem:name format? a package name?). The description does not adequately compensate for the lack of schema documentation.

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 'OSV Vulns: Known package vulns (OSV.dev). 'eco:name'' identifies the tool as querying known package vulnerabilities from OSV.dev, which is a specific verb-resource pairing. However, it does not clearly distinguish this from sibling tools like cve, nvdcve, ghadvisory, or vuln_feed, which also deal with vulnerabilities. The 'eco:name' hint is cryptic and not explained.

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?

No guidance is provided on when to use this tool versus alternatives like cve, nvdcve, ghadvisory, or vuln_feed. The description does not state what kind of query is expected (e.g., package name, ecosystem), nor does it mention any exclusions or prerequisites. An agent would have to infer usage from the tool name and the cryptic 'eco:name' hint.

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