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

Annotations already declare read-only, idempotent, open-world, non-destructive behavior, so the safety bar is low. The description adds useful data-scope context (which fields are returned per chain, that Pons/Long launchpads are the known set), but says nothing about permissions, rate limits, or result granularity.

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?

The tool's scope leads the first sentence and chain-specific behavior follows in order, with no filler. It is dense and slightly run-on, but every sentence carries distinct information about what is returned.

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 no output schema, the description carries the return-value burden and does so by enumerating the per-chain fields. What remains slightly under-specified is the shape and volume of results (e.g., how many 'latest launches'), but the agent has enough to invoke 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%, so both parameters (wallet pattern, chain enum) are already fully documented. The description's 'Reads Robinhood Chain unless chain names another' essentially restates the chain default rather than adding new semantics, so the baseline 3 is appropriate.

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 resource (every coin a given wallet launched) and enumerates the returned facts per chain (count, bonding-curve graduation, dev-sold status, latest launches). It is clearly distinct from single-coin siblings like check_coin or launch_record, though it never names an alternative 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 one concrete usage rule — 'Reads Robinhood Chain unless chain names another' — which tells the agent how the default behaves. However, it offers no when-to-use guidance relative to siblings such as check_coin, launch_record, or wallet_privacy, leaving the routing decision implied.

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