configure_splitwise

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

No annotations are provided, so the description must carry the burden of behavioral disclosure. While 'configure' implies a mutation, the description fails to specify whether credentials are validated, persisted, or if reconfiguration overwrites previous settings. This lack of detail leaves the agent uncertain about 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 extremely concise, consisting of two short sentences. The critical constraint is front-loaded in the first sentence, and the second sentence adds essential usage guidance. Every word earns its place with no 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?

The description is adequate for a simple configuration tool but lacks information about whether this step is a prerequisite for other tools, or what the output schema contains. Since an output schema exists, the description could note that a confirmation or status is returned. More context would make it complete.

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?

With schema description coverage at 0%, the description adds value by explaining the OR relationship between parameters. However, it does not explain the format or purpose of each parameter beyond their titles. For a configuration tool, more detail (e.g., where to obtain these) would improve semantics.

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: 'Configure the Splitwise client with API credentials.' The verb 'configure' and noun 'Splitwise client' are specific, and the tool is distinctly different from siblings like 'add_expense' or 'list_friends', which handle data operations.

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 instructions on required inputs: 'You must provide either (consumer_key AND consumer_secret) OR api_key.' This clarifies the parameter dependency. However, it does not mention when to use the tool versus alternatives, though siblings are unrelated to configuration, so this is minor.

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