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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It reveals only that the tool scans DEXes, but does not clarify whether this is purely read-only, whether network access is required, whether it executes trades, what output it produces, or what happens on failure. This is insufficient for a tool without annotation safety signals.

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 very short and the core function is front-loaded in a single readable sentence. The 'Dex Arb:' prefix is mildly redundant with the tool name, but no words are wasted beyond that.

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?

For a DEX arbitrage tool with optional parameters, no output schema, no annotations, and a large set of related siblings, the description is far too minimal. An agent cannot determine what inputs are needed, which DEXes or chains are covered, what result format to expect, or how this differs from similar tools.

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 covers both parameters, so the baseline is 3, but the parameter descriptions ('Token to process', 'Address to process') are highly generic and add little real meaning. The tool description itself does not clarify how token and address relate to arbitrage scanning, so the description adds no value beyond 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 states a clear action and resource: 'Scan DEXes for arbitrage opportunities.' This is understandable and more specific than a bare tautology, though the 'Dex Arb:' prefix redundantly restates the tool name. It does not differentiate from closely related siblings like x402-dex-scanner or x402-token-arbitrage-spot.

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?

The description gives no guidance on when to use this tool versus alternatives, no mention of prerequisites, and no context for choosing it over the many DEX/arbitrage-related siblings. Usage context is only weakly implied by the phrase 'Scan DEXes for arbitrage opportunities.'

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