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 real value by naming the data source (token contracts) and the access prerequisite (Flows Terminal pass, Builder, Scale or PRO), but says nothing about rate limits, latency, or return format.

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?

Two sentences, front-loaded with the core computation and its outputs, with the access caveat last. The dense comma-list of outputs is slightly run-on but every clause conveys distinct information.

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 usefully compensates by summarizing the return payload (net figure, total supply, biggest mints/burns, hourly history) and the auth requirement. However, the undocumented window options and lack of any guidance among the many sibling flow tools leave it only minimally complete for an openWorld paid-tier endpoint.

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 0% for the single 'window' parameter. The description only says 'over the last 24 hours', which effectively implies a fixed window and does not acknowledge the 7d/30d enum options the schema exposes, leaving the parameter under-documented and potentially misleading.

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 concrete metric (net stablecoins minted minus burned) and enumerates the returned content (total supply, biggest mints/burns, hourly history), which is far more specific than a restated title. It is clearly the stablecoin-specific counterpart to the broader flow tools, though it never explicitly names a sibling to distinguish itself from.

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?

No statement of when to use this versus the sibling flow tools (get_etf_flows, get_global_flows, get_money_flows). The only contextual cue is the access-tier requirement, which is a prerequisite rather than usage guidance.

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