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

Annotations already declare the safe read-only, idempotent, non-destructive profile, so the bar is met structurally. The description nonetheless adds a genuinely useful behavioral fact the annotations cannot convey: it informs but does not deliver the file, preventing an agent from trying to use it to send the kit. No mention of format/limits, but this is a static info tool.

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?

Three tight sentences, each carrying distinct load: what the artifact is, when to use it, and two explicit routing/caveat rules. Front-loaded with the resource identity before the constraints.

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 parameterless informational tool with annotations covering the safety profile and no output schema to defer to, the description fully answers what it returns (a description of the kit and how to obtain it) and where to go instead.

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?

The tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline for 0 params applies. Nothing added or missing on this dimension.

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 (Describes) and resource (the free AI Capability Briefing Kit, a 10-page internal briefing document), and explicitly names what it is not by routing to email_me_the_kit and assess_ai_readiness. An agent can distinguish this from all siblings without opening a schema.

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?

Explicit when-to-use ("when the user wants a free starting resource") plus explicit exclusions and alternatives ("does not deliver the file; use email_me_the_kit when the user asks for it by email"). Routing conditions are fully specified.

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