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

Annotations already declare readOnly, idempotent, non-destructive, non-open-world, so the safety profile is covered. The description adds genuine value beyond that: the checklist comes from viberaven.dev, includes sources, the npx step is 'advice, not a gate', and the items are manual checks the tool does not execute.

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 trigger condition, then returns, then a scope-limiting clarification. Dense and mostly waste-free, though the second sentence packs two distinct facts (checklist source and optional step) that could be split for faster scanning.

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 single-enum, read-only lookup with a defined output schema, the description covers trigger, content, provenance, and the crucial negative scope (nothing is executed). An agent needs nothing more to select and call it correctly.

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% with a fully documented enum, so the schema already carries the parameter semantics. The description only implies the stack values in prose ('Lovable + Supabase app or a Next.js + Supabase app on Vercel'), adding no syntax or format detail beyond the schema.

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 ('get a launch checklist') plus the exact scopes it covers (Lovable + Supabase, Next.js + Supabase on Vercel) and what it returns (published checklist with sources, one optional local step). This is clearly separable from siblings search_guides and explain_finding.

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?

Opens with an explicit trigger condition ('Use this when the user wants a manual pre-launch checklist...') and reinforces the modality by stating the tool does not run any of the checks. No sibling alternative is named, so it stops short of a 5.

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