vaultpilot-mcp

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

No annotations are provided, so the description carries the full burden. It discloses key behavioral traits: it resolves names to addresses, operates on mainnet, and returns null for unregistered names. However, it lacks details on error handling, rate limits, or authentication needs, which are important for a tool interacting with blockchain data.

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 front-loaded with the core purpose in the first clause, followed by additional context. It's a single, efficient sentence with no wasted words, making it easy to parse quickly.

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?

Given the tool's moderate complexity (blockchain resolution), no annotations, no output schema, and low schema coverage, the description is somewhat complete but lacks details on output format beyond 'Ethereum address' and error cases. It covers the basics but could benefit from more behavioral context for safe agent use.

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 description adds meaning beyond the input schema by specifying that the parameter is an 'ENS name (e.g. vitalik.eth)', which clarifies the expected format. Since schema description coverage is 0% and there's only one parameter, this adequately compensates, though it could mention the minLength constraint from 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 clearly states the tool's purpose with a specific verb ('Resolve') and resource ('ENS name'), provides an example ('vitalik.eth'), and distinguishes it from siblings by specifying it resolves to an Ethereum address via mainnet ENS resolver. This is precise and differentiates from tools like 'reverse_resolve_ens'.

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 context by mentioning 'mainnet ENS resolver' and 'Returns null if unregistered', which helps understand when it's applicable. However, it doesn't explicitly state when to use this vs. alternatives like 'reverse_resolve_ens' or other address-related tools, though the distinction is somewhat clear from the purpose.

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