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

Annotations already establish read-only, idempotent, open-world, non-destructive behavior. The description adds useful behavioral context by noting that distributions are valued at today's token prices, implying dynamic/price-sensitive output, and that it includes every distribution with token amounts. It does not describe output structure or rate limits, but the annotations carry the safety profile.

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 front-loaded with what the tool returns, then appends a clear usage sentence. It is efficient overall, though the long content list in the first sentence could be slightly easier to scan if structured separately.

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?

Given a zero-parameter, read-only informational tool with no output schema, the description explains both the content scope and the user questions that should trigger it. Annotations cover safety, and the description covers what an agent needs to select and call the tool 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?

The tool has zero parameters, so there is no parameter semantics to explain. Baseline is 4 for a parameterless tool, and nothing in the description is needed to clarify inputs.

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 informational resource—cp0x's identity, mission, values, sites, channels, 2025 figures, and every token distribution—so an agent knows exactly what content this tool provides. It is clearly distinguishable from the sibling list_* and get_* tools, which focus on open-source items, deals, races, leaderboards, or x402 resources.

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 explicit user-question triggers: asking what cp0x is, what it gave users, or where to find its sites and channels. It does not explicitly name alternative tools or when not to use this one, but the stated triggers are specific enough to route most queries correctly.

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