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

No annotations exist, so the description carries the full burden and does so well: it discloses the cost ($0.25 USDC on base via x402), that no account/API key/invoice is needed, the page size (1000 records), that billing is per page not per record, and that the cursor must be passed to continue.

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?

Five short sentences, each earning its place, with the core purpose and the payment protocol front-loaded before pagination details. No filler.

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 4-param, no-annotation, no-output-schema tool, this covers pricing, auth posture, page size, and pagination adequately. It doesn't explain the `type`/`protocol` filter semantics, but those are documented in the 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 the baseline is 3, but the description adds real meaning beyond the schema: it explains the payment field's two-mode contract (omit vs supply) and clarifies the per-page billing semantics of `cursor` continuation, which the schema does not state.

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+resource: 'Cursor-paginated bulk snapshot of endpoints or resources.' An agent can tell this is a bulk-dump tool rather than a scoring or lookup tool, though it doesn't explicitly name which sibling it supersedes (bulk_score, get_rankings).

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 an explicit two-step invocation recipe: call without `payment` to get requirements, call again with `payment` to be served. Clear operational context, but no guidance on when this tool is preferable to sibling alternatives like bulk_score.

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