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

With no annotations, the description carries the behavioral disclosure burden. It does reveal that the signal is live, computed from on-chain data, and apparently paid via x402 (USDC on Base). However, it does not clarify return format, rate limits, or what the garbled 'raw Price 0.01' actually means, leaving meaningful ambiguity.

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 description is brief and front-loads the key signal components, but it ends with a malformed sentence ('Turns raw Price 0.01 via x402 (USDC on Base)') that obscures meaning. The unclear fragment prevents the structure from being genuinely concise and helpful.

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?

Without an output schema or annotations, the description needs to explain the return shape more completely. It names three signal components and mentions payment, but leaves unclear what the '30-period' refers to, what 'defi health' encompasses, and exactly how the paid flow works. Still, the tool has only one optional parameter, so invocation is not heavily impeded.

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?

The input schema already documents the single optional wallet parameter with 100% coverage, including free-tier credit details. The description adds essentially no parameter semantics beyond an unclear pricing note, so the baseline of 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 output: a live computed signal with 30-period percentile rank, 4-period momentum, and a plain-language trend verdict. It is clear enough to identify as a DeFi-health analytics tool, though it does not explicitly distinguish itself from the many sibling processed_* tools and contains a confusing 'Turns raw Price 0.01' fragment.

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 guidance is given on when to use this tool versus alternatives such as processed_defi_chain_tvl, processed_defi_dex_volume, or the various signal_* tools. 'Finance Signal Bundle' implies a summary/health use case, but the description never states it explicitly or names exclusions.

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