submit_rate_limit_challenge

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

With no annotations provided, the description bears the full burden for behavioral disclosure. It indicates a mutative action ('unblock') and specifies the source for the captcha, offering sufficient behavioral context for this simple tool.

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 extremely concise with two sentences, front-loading the purpose and providing just enough detail. Every sentence earns its place without redundancy.

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?

Despite the absence of an output schema, the description is complete for this simple tool. It tells the agent exactly what inputs are required and where to obtain them, leaving no ambiguity about how to 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?

Although the input schema already describes each parameter, the description adds valuable context: 'challenge token from the rate-limit error' and 'solved captcha from the Signal captcha page', which aids the agent in sourcing the correct values.

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: 'Unblock the account after Signal applies a rate limit.' It uses a specific verb (unblock) and resource (account after rate limit), distinguishing it from the many sibling tools which do not address rate limiting.

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 explicit guidance on what to provide: the challenge token from the error and a solved captcha from a specific URL. While it doesn't explicitly state when not to use, the context makes it clear this is only for rate limit scenarios.

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