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

With no annotations, the description carries the burden and does disclose that this is a processed/live signal with 30-period percentile rank, 4-period momentum, and a trend verdict. It also hints at a $0.01 payment via x402, but the garbled second sentence obscures whether that is a cost, a transformation, or both, and no output or failure behavior is disclosed.

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 short but poorly structured, especially the second sentence: 'Turns raw Price 0.01 via x402 (USDC on Base).' contains a double space, odd capitalization, and an unclear relationship between 'raw', 'Price', and '0.01'. The useful computation details are front-loaded, but the malformed sentence reduces clarity.

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?

There is no output schema, so the description should explain what the signal response looks like and how to interpret the percentile, momentum, and verdict. It also fails to mention TVL or chain specificity, leaving an agent without enough context to confidently call the tool or interpret its result.

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 only parameter, wallet, is fully documented in the schema with its free-tier credit meaning, so schema coverage is 100%. The description adds no extra parameter context, keeping this at the baseline.

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 action ('get live computed signal') and names some signal components, but it never identifies the actual resource implied by the tool name: DeFi chain TVL. The broad phrase 'Processed analytics layer over on-chain crypto' could describe many crypto sibling tools, and the missing TVL reference weakens purpose clarity.

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 on when to use this tool versus the large set of similar processed_* and signal_* siblings. It does not state scenarios, exclusions, or alternative tools, leaving selection entirely to the agent's inference.

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