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

The annotations already declare readOnlyHint=true and openWorldHint=true. The description adds that the lookup is done via eth_call and mentions a 0.02 USDC cost, but the cost is not explicitly framed as a fee and no error or edge-case behavior is disclosed. This adds moderate value beyond the annotations.

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 core statement is brief and front-loaded, but 'Not financial advice' is boilerplate that does not help an agent select or invoke the tool. '0.02 USDC' is useful but ambiguous without the word 'fee' or 'cost'.

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 simple two-parameter read-only tool, the description covers the purpose, method, and expected data fields. However, with no output schema and no clarification of the USDC charge or failure behavior, it is not fully complete, though the annotations reduce the safety burden.

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%, so the description must compensate. It implies token is an ERC-20 contract and network is the chain on which eth_call runs, but it does not explicitly map parameters or explain value formats beyond what the schema already provides through pattern and enum.

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 identifies the resource (ERC-20 token) and the returned data (name/symbol/decimals), and indicates the method (eth_call). It clearly separates this from siblings like token_safety or memecoin_score, though it does not use an explicit verb such as 'fetch' or 'get'.

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 token_safety, pair_digest, or other siblings. The description states what it does but not the context in which an agent should prefer it, nor any exclusions or alternatives.

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