web3_getClientVersion

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

No annotations provided, so description carries full burden. It describes the return type with an example and notes potential InternalError from Infura unavailability. However, it does not explicitly state read-only nature or other behavioral details like rate limits.

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 well-structured with clear sections (Args, Returns, Examples, Errors), front-loaded with the main purpose. Every sentence adds value, and it is appropriately sized for the tool's simplicity.

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 tool with no output schema and no annotations, the description is complete: it explains return value, provides examples, covers errors, and lists parameters. It sufficiently enables an agent to understand and invoke the tool correctly.

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 baseline is 3. The description adds an Args section for 'network' but does not mention 'response_format' parameter beyond schema. The Returns and Errors sections provide context, but parameter information is not enhanced beyond 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 clearly states it returns the current Ethereum client version string, specifying its purpose of identifying node software and version. This is distinct from sibling tools that focus on chain data, block info, or network stats.

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 implies usage by stating its usefulness for identifying node software, but lacks explicit when-to-use or when-not-to-use guidance. No alternatives or exclusions are mentioned, though the purpose alone suggests it's for client version queries.

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