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

With readOnly/openWorld annotations already covering the safety profile, the description adds real operational context: page size (50), ordering (newest first), cursor-based pagination, explicit absence of likes/comments, and a 1-credit cost. That cost and pagination detail is exactly the kind of thing annotations cannot express.

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?

Three tight sentences, zero filler, with the core scope front-loaded and secondary facts (pagination, cost, missing fields) following in descending importance.

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 output schema, the description usefully characterizes the return set (public videos, newest first, 50/page, view counts, no likes or comments) so an agent knows what it gets. The one gap is `cache_max_age`, which is unexplained anywhere and could matter for repeated calls.

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 67% and the schema already documents both `channel` (with id/name/URL forms) and `cursor` in detail. The description's 'Pass the cursor from the previous response to page' restates the schema rather than extending it, and `cache_max_age` is left undocumented in both places.

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 verb+resource ('A BitChute channel's public videos') plus concrete scope details: newest first, 50 per page, with view counts. It partially distinguishes itself from the sibling bitchute_video by noting likes are absent, though it never contrasts with bitchute_channel or bitchute_search.

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 does route the agent elsewhere for engagement data ('Likes and comment counts are not in the list; bitchute.video has likes'), which is a genuine alternative pointer. However, there is no guidance on when to use this versus bitchute_channel (channel metadata) or bitchute_search, and no exclusions or prerequisites stated.

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