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

Annotations already declare readOnly/idempotent/non-destructive/non-openWorld, but the description adds genuine behavioral context: the API-key auth requirement and the data-quality rule that implausible numbers are withheld rather than guessed. 'Places no orders, moves no funds' leans redundant with the annotations, but the auth and plausibility behaviors are new information.

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?

Purpose is front-loaded effectively in the first sentence, but the tail is padded with promotional/contextual filler ('From EventTrader's crypto dashboards (cymetica.com/crypto)', 'Not financial advice') and safety lines that largely restate the annotations. Tightening would improve signal.

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?

With no parameters and no output schema, the description usefully sketches the return content (per-alert fire counts, source and timestamp per number) and flags the auth requirement. It is nearly complete, missing only an explicit note on the shape/ordering of the returned list.

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 tool takes zero parameters, so there is nothing for the description to disambiguate and the baseline of 4 applies. No parameter-level detail is needed here.

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 specific resource and scope: 'the alerts your agent has set, with how often each has fired,' which cleanly places it as the read/list counterpart to crypto_alert_create and crypto_alert_delete. It stops short of explicitly naming a sibling it is not (e.g., crypto_alerts_inbox), so an agent must infer the boundary from the 'your agent has set' phrasing.

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?

Provides a real prerequisite ('Needs a registered agent (API key)') that determines applicability, but gives no when-to-use/when-not guidance and never routes the agent to crypto_alerts_inbox or crypto_alert_create. Usage is implied rather than stated.

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