trust_challenge

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

With no annotations, the description carries the burden of behavioral disclosure. It adds useful context about the 1-hour expiry and the requirement to sign and submit via trust_verify. However, it does not clarify whether the operation is read-only or state-changing, nor what the challenge response contains.

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 a single, front-loaded sentence with zero wasted words. It conveys the core purpose and essential usage in 20 words, making it highly efficient.

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 only 2 parameters and no output schema, the description is largely complete. It explains the purpose, the next step (trust_verify), and the time constraint. However, it does not describe the return value structure, which could be helpful for an agent to know what to expect.

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 100% of parameters, so baseline is 3. The description adds no extra meaning beyond the schema, only referencing 'a specific chain' without elaborating on the chain parameter. This meets the baseline but does not improve understanding.

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: 'Get a verification challenge for a specific chain.' It uses a specific verb ('Get') and resource ('verification challenge'), and distinguishes itself from its sibling trust_verify by explaining the challenge must be submitted via trust_verify.

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 provides clear usage context by stating 'The challenge must be signed and submitted via trust_verify within 1 hour.' This implies the tool is the first step in a verification flow and names the sibling tool to use next, though it does not explicitly contrast with other sibling alternatives.

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