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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds a genuinely non-annotated behavior: "Costs 1 credit," which matters for call budgeting. It stops short of describing what happens for a nonexistent/renamed handle or how the undocumented cache works.

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?

Two sentences, no padding, with the substantive payload list and cost both stated up front. The only waste is the leading one-word "Channel." fragment, which duplicates the title and delays the useful 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?

Because there is no output schema, the enumerated field list does real work in telling the agent what comes back, and the credit cost is useful. But cache_max_age is left entirely unexplained and the failure mode for an invalid handle is unstated, which leaves a read-only agent with gaps it cannot resolve from structured data.

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 required handle is fully documented in the schema, including accepted formats (@name, @name:f claim suffix, odysee.com/lbry:// URLs), so the critical input is covered. However, cache_max_age has no description anywhere, and the description does nothing to compensate for that 50% coverage gap.

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?

"Public metadata for an Odysee channel" plus an explicit field list (title, description, avatar, subscriber count, video count, website, creation date) makes the resource and payload unambiguous. The bare opener "Channel." repeats the title and the verb (fetch/retrieve) is only implied. It also never distinguishes itself from the adjacent odysee_channelVideos, which an agent could easily confuse for channel info.

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?

There is no when-to-use or when-not-to-use guidance, and no named alternative. An agent must infer that this is for channel-level metadata while odysee_channelVideos is for the video listing, and that odysee_search is for discovery by keyword — none of that routing is stated.

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