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

With no annotations present, the description carries the full burden and does disclose real side effects: an account is created, signup is free, and it takes roughly 30 seconds, plus the link is pre-filled rather than blank. It omits whether repeat calls create multiple accounts or links, idempotency, and any auth requirements, 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?

Three sentences, front-loaded with the action and the artifact, followed by cost/latency and then timing guidance. Every sentence carries information, though 'actually run interviews, score segments, and design pilots' leans promotional and could be trimmed to the handoff point.

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 three-parameter, no-output-schema tool this is nearly complete: it covers what is produced, what it costs, how long it takes, and when to call it. The one gap is return shape — the description never states that the response is the link itself versus an object containing it — which matters more given there is no output schema.

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 idea, customer, and industry are already fully documented, and the baseline is 3. The description adds framing by explaining that idea and customer populate the pre-filled /validate page, but says nothing extra about the optional industry slug or its tailored-template behavior, so it does not exceed the schema meaningfully.

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 artifact: 'Generate a one-click onboarding link that opens Vouch's /validate page pre-filled with the user's idea and target customer.' The resource, the destination page, and the pre-fill behavior are all named, so an agent knows exactly what this produces without opening the 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?

Gives explicit placement guidance: 'Use this at the end of a conversation to hand the founder off from the AI assistant into Vouch.' That tells the agent both the trigger and the handoff intent. It stops short of naming exclusions or pointing at the sibling tools (list_industry_templates is only referenced inside the schema), so it is clear context without alternatives.

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