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

Annotations already cover the safety profile (readOnly, idempotent, openWorld=false, non-destructive), and the description adds real value on top: counts only with no message text or names, the 10-mention threshold that triggers not_enough_data, source+time stamping, withholding numbers that fail plausibility checks, and no fund movement. It does not, for example, describe rate limits or refresh cadence, so it stops short of a 5.

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 core purpose and threshold are front-loaded, but the blurb is padded with low-yield material: the dashboard attribution/URL, the repeated 'every number carries its source and time', and the 'not financial advice' disclaimer. Several of these sentences are boilerplate rather than decision-relevant content.

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?

There is no output schema, and the description compensates by explaining what the response contains (buzz score with 50=normal, 24h and 7d mentions, mentions/day, talk-vs-price divergence) and the not_enough_data state. Given the tool's simplicity and single input, this is close to complete, though it never states the base comparison window or units explicitly beyond the score scale.

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?

Only one parameter (symbol) and schema coverage is 100%, so the schema already documents that tickers, names, or slugs are accepted. The description adds 'one coin' scoping but no additional format or resolution guidance, matching the baseline 3 for a fully documented single parameter.

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 measurement (a 0-100 'buzz meter') for a specific resource (one coin), and enumerates the concrete outputs (mentions over 24h/7d, mentions per day, talk-vs-price). The scope is distinguishable from probable siblings like crypto_animal_spirits or crypto_outlook, though no sibling is named to anchor the contrast.

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?

Usage is implied ('the buzz meter for one coin') and one meaningful edge condition is given (status=not_enough_data under 10 mentions in 7 days). However there is no explicit when-to-use/when-not or pointer to an alternative tool, leaving the agent to infer when this beats crypto_outlook or crypto_dashboard.

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