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

With no annotations provided, the description carries the full burden. It discloses the trigger condition, the 5-minute polling interval, the re-arm behavior, the returned id, and webhook semantics. It also hints at the fee-adjusted pricing. Nothing is hidden, and there's no contradiction.

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 dense but not wasteful. It front-loads the core trigger and then adds re-arm and webhook details. It reads as a single paragraph but logically flows from purpose to operational details. Slight room for bullet-point structuring, but it's appropriately sized.

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 create operation with no output schema and no annotations, the description covers the return value (watch with id), polling instructions, webhook behavior, and re-arm logic. It doesn't mention error cases or rate limits, but these are not essential for a basic create call. It's complete enough for an agent to use it 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?

Schema coverage is 0%, so the description must compensate. It explains gpu, offer_class (optional), max_price_per_gpu_hr, and webhook_url semantics through context, even though it doesn't run through each parameter explicitly. It adds meaning beyond the schema by describing the matching logic and the role of each parameter in the tripwire.

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 states a specific verb (create) and resource (price watch/tripwire) with a precise trigger condition. It clearly distinguishes from siblings like watch_status (which polls) and delete_watch (which removes). The behavior is unambiguous and self-contained.

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 explains how the watch works (fires when price drops, re-arms on 2% climb) and mentions polling and webhook options. It implies when to use it (to monitor price thresholds) but doesn't explicitly contrast with alternatives like create_limit_order. Still, the context is clear enough for an agent to select it.

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