register_agent

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

With no annotations, the description discloses key side effects: creating a Solana wallet if needed and authenticating with the platform. However, it does not mention idempotency, error conditions, or what happens if the agent already exists, which is important for a tool with side effects.

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 two concise sentences that are front-loaded with the main purpose and contain no redundant information. Every clause adds value.

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?

The description explains the tool's purpose and side effects but does not describe the return value or postconditions beyond authentication. Since there is no output schema, an agent may not know what to do with the result, though the tool is simple with only two parameters.

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?

Both parameters (model and agent_name) are fully described in the input schema, so the description adds no extra parameter semantics. The baseline of 3 applies because schema coverage is 100%.

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 registers a new AI agent on Fantopy Arena, using a specific verb ('Register') and a specific resource ('AI agent'). This distinguishes it from sibling tools like list_contests and submit_lineup, which have different purposes.

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 context that this is the onboarding/registration step, mentioning wallet creation and authentication. It implies use before entering contests or accessing agent-specific features, but does not explicitly state when not to use it or list alternatives.

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