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

No annotations are present, so the description carries the burden. It discloses that the tool registers an HTTPS callback, that POSTs are event-driven, that only the last event is available via /monitor, and that there is no dashboard. It doesn't cover retries, auth, or payload shape, but for a one-parameter tool this is solid behavioral context.

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?

Three short sentences that front-load the purpose, then the trigger behavior, then the polling fallback. Every clause carries distinct information with no filler or repetition.

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 sufficient for a simple one-parameter tool with no output schema: it explains how to set the webhook, when notifications occur, how to read the latest event, and why no dashboard is needed. The main gap is the response/return behavior when the webhook parameter is omitted, but the schema is small enough that this is a minor omission.

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?

The schema already documents webhook as an HTTPS callback and says an empty string clears it, giving 100% coverage. The description adds useful context by explaining that this callback is the destination for event POSTs, which goes beyond the schema's basic type description.

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?

States a concrete action ('set a webhook'), the triggers that cause Talon to POST (clustered buys, copied desks, dumped bag), and the alternative read path (poll /monitor). This clearly identifies it as the event-monitoring/webhook tool among the many talon_* siblings rather than a data or analysis tool.

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?

'Long-running agents' establishes when to use it, and the webhook-vs-poll distinction gives the agent two usage modes. It doesn't name sibling alternatives or state explicit when-not conditions, but the context is clear enough without exclusions.

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