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

With no annotations, the description carries the full behavioral burden and does so richly: paid ($299 one-time), returns a checkout_url requiring a repeat call with identical candidates after paying, otherwise returns the .docx directly, and delivery is confined to the authenticated session with no public link. Cost, idempotency, and delivery/security semantics are all disclosed.

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?

Front-loads the core action and packs cost, return flow, and delivery constraints into essentially one dense sentence with em-dash asides. Every clause earns its place, though the run-on construction is slightly harder to scan than discrete sentences would 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 two-param tool with a nested candidates array, no output schema, and no annotations, the description covers everything an agent needs: prerequisite inputs, cost, the checkout re-call loop, and the return artifact. Nothing material is missing.

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 0%, so the description must compensate, and it does: it defines `candidates` as every candidate mechanism found including its search_prior_art/compare_claims results. `project_name` is trivially self-evident. It could say more about the required sub-fields (mechanism/location/summary/matches), but coverage of the key parameter is solid.

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: packages patent_scan findings into a paid Word document. The description makes it unmistakable which sibling it follows (search_prior_art/compare_claims) and what artifact it produces, so an agent can distinguish it from the other creation tools 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?

Explains the sequencing context clearly: use it after a patent_scan session and pass the results found via search_prior_art/compare_claims. It also spells out the two-step payment re-invocation flow. It does not name when NOT to use it or any alternative, so it stops short of the 5-level.

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