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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds genuinely useful behavior beyond that: a $0.005 per-successful-call price, x402 payment via _meta, failed calls free, and coverage that grows over time. It does not describe result shape beyond one clause or latency/volume characteristics.

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?

Purpose is front-loaded in the first clause, followed by exclusions and pricing in a logical order with no filler sentences. It is dense but every sentence carries content; the payment-chain list is the only mildly bloated element.

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?

With three params, full schema coverage, and no output schema, the definition covers cost, payment mechanism, and scope limits well. However, it never describes the return payload (count, fields, ordering, or pagination of 'known verified deployments') and the payment chains listed conflict in spirit with the schema's four-value chain enum.

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%, so the schema already documents token format, creation_tx ('actual top-level contract creation transaction, not pair creation'), and the chain enum. The description reinforces the creation-tx semantics but adds nothing about the 'chain' selector or the unexplained 'arc' enum value.

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?

The description states a specific verb and resource: verify a token's finalized top-level creation transaction and return verified deployments by that sender with stored scans. It is clearly distinct from scan/trace/verdict siblings by virtue of the creation-proof requirement, though it never names a sibling to route against.

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?

It gives clear exclusions ('does not discover every deployment, trace launchpad/internal CREATE, attribute a team, or label a deployer a scammer') and a coverage caveat, which tells the agent when results will be incomplete. It lacks an explicit 'use X instead' routing statement and says nothing about prerequisites before calling.

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