Update channel set

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

The description adds useful behavioral context beyond the annotations: partial-update semantics, the 'at least one field is required' constraint, and a specific 409 DUPLICATE_NAME error case. The idempotentHint is already annotated, and the description does not contradict it.

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 two sentences long, with the core operation and partial-update requirement front-loaded. The error condition and usage guidance follow efficiently, and every sentence adds information without redundancy.

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?

For a simple, three-parameter mutation tool, the description covers the essential invocation details: partial update, required-field condition, collision behavior, and intended usage. There is no output schema, and the description does not mention the return value or behavior for a nonexistent setId, which is a minor gap.

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 100%, so the baseline is 3. The description adds value by clarifying that at least one of name or channelIds must be supplied, even though the schema does not enforce this, and by reinforcing the replacement semantics of channelIds as 'change its channels.'

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 clearly states a specific action ('Update a channel set's name and/or channels') and identifies it as a partial update. This distinguishes it from sibling tools like create_channel_set, delete_channel_set, and list_channel_sets without ambiguity.

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?

The description explicitly says when to use the tool: 'Use this when the user wants to rename a channel set or change its channels.' It provides clear context, though it does not explicitly mention alternatives or exclusion cases, which prevents a 5.

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