update_price_alert

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

With no annotations, the description carries full burden. It discloses that null clears a threshold (with a Premium restriction) and that isActive toggles enable/disable. It does not mention error handling or idempotency, but the core mutation behaviors are transparent.

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?

Two concise sentences that front-load the purpose. Every sentence adds value: the first states the primary action, the second explains three key behaviors (null, isActive, API key). No wasted words.

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 4 parameters, no output schema, and low schema coverage, the description covers essential behaviors but omits details like return value, error scenarios, or whether the update is partial. It is adequate but not fully 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?

Although schema coverage is only 25%, the description adds behavioral meaning beyond the schema by explaining the effect of null on thresholds and the function of isActive. This compensates for the lack of schema description for other parameters.

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 verb 'Update' and the resource 'price alert', and it distinguishes the tool from siblings like 'create_price_alert' and 'delete_price_alert' by explaining specific behaviors like null clearing and isActive toggling.

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 when to pass null (only for Premium users, free users must keep one direction) and that isActive toggles without deleting. It also mentions the requirement for IWMM_API_KEY. It does not explicitly name alternative tools, but the context is clear enough.

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