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

Beyond the annotations, it discloses that alerts are monitored continuously server-side and delivered only to channels saved on the account page, and explicitly rejects a webhook_url supplied at call time. Combined with the annotation's destructiveHint for delete, the mutation model is understandable, though it doesn't say what happens to in-flight alerts when deleted or whether creation is idempotent.

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?

It is short and front-loads the core behavior before enumerating actions, with no filler. The action list is packed into one run-on sentence with parentheticals, which slightly hurts scannability but nothing is redundant.

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?

An output schema exists so return values need not be described; all seven parameters are documented in-schema and the description supplies the action-to-parameter mapping, delivery destination rules, and the Pro prerequisite. An agent has enough to invoke any of the three actions 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 100% and each property already carries its own scoping note, so the baseline would be 3. The description nevertheless adds cross-parameter meaning the schema does not enforce: which fields pair with which action (e.g. create = coin + trigger, optionally band/deliver; delete = id) and that webhook_url is intentionally ignored. That conditional-combination guidance is real added value.

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 the resource (price/market alerts delivered to the CoinLobster account) and enumerates the three operations (list/create/delete), so an agent can tell what the tool manages. It does not distinguish itself from the sibling tool my_alerts, leaving ambiguity about which alert-related tool to call.

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?

It gives per-action requirements (create needs coin + trigger, funding_band needs band, delete needs id, list is the default) and a plan constraint ('Pro to create'). It never says when to prefer this over my_alerts or other alert-adjacent siblings, so a key routing decision is left open.

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