uuid_generate

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

With no annotations provided, the description carries the full burden, but the tool is a stateless pure generator so the risk surface is small. It does add real value by specifying 'cryptographically random' and 'v4' rather than leaving randomness quality unspecified. It omits output formatting details beyond the uppercase flag, so it is adequate rather than rich.

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?

A single tight sentence with zero filler. The essential qualifiers (count-agnostic, cryptographic, v4) are front-loaded and the sentence is exactly as long as it needs to be.

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 trivial zero-required-param generator with a fully described schema and no output schema, this is nearly complete; the agent needs nothing more to call it. The one gap is the absence of any tie-break against the 'random_uuid' sibling.

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 100%: count (1-100, default 1) and uppercase (default false) are fully documented in the schema. The description only implies multiplicity with 'one or more' and adds no syntax or range detail. Baseline 3 applies when the schema does the heavy lifting.

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 with key qualifiers: 'Generate', 'UUID v4', 'cryptographically random'. An agent knows exactly what it produces. However, it never distinguishes itself from the sibling 'random_uuid' (or 'httpbin_uuid'), which is the main selection ambiguity for this tool.

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 when-to-use guidance and no mention of alternatives, despite 'random_uuid' and 'httpbin_uuid' existing as close siblings. The agent gets the behavior but not the routing criteria that would let it choose this over the alternatives.

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