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

Annotations are absent, so the description must carry the behavioral load. It discloses that the result is live/computed and mentions USDC/x402 payment, but the payment sentence is malformed and it does not explain output format, auth requirements, read-only nature, or rate limiting beyond what the schema itself already says about wallet credits.

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 first sentence is front-loaded and compact, but the second sentence is syntactically broken ('Turns raw Price 0.01 via x402') with a double space and missing context, which undermines the structure.

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 should clarify the returned signal shape or response fields; it only names metrics. It also leaves the payment/x402 workflow unexplained, making the tool under-specified for an agent to call confidently.

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; the description does not add much parameter-specific meaning. The x402/USDC mention hints at payment relevance, but the only parameter (wallet) is already fully described in the schema.

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 opens with a specific action ('get live computed signal') and identifies a 'processed analytics layer over on-chain crypto' with concrete outputs (30-period percentile rank, 4-period momentum, trend verdict). It is clear enough on its own, but it does not explicitly differentiate itself from the many processed_crypto_* siblings.

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?

There is no guidance about when to prefer this tool over alternatives, no exclusions, and no prerequisites. The only usage hint is the cryptic 'Turns raw Price 0.01 via x402' clause, which is not actionable.

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