merge_clusters

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

Explicitly states that the source cluster is deleted after merge, indicating destructive behavior. With no annotations, this disclosure is adequate, though it could mention idempotency or error handling.

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; the first is effective but the second mentions internal delegation which is unnecessary for tool selection. Could be more focused.

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?

Covers the basic operation but lacks mention of error conditions, what happens if clusters do not exist, or the output format (though output schema exists). Adequate but not thorough.

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?

Both parameters have comprehensive schema descriptions (100% coverage). The tool description adds no new information beyond the schema, so baseline 3 applies.

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 the action: merge all papers from one cluster into another and then delete the source. This distinctively differentiates from sibling tools like split_cluster or prune_cluster.

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?

No guidance on when to use this tool versus alternatives like split_cluster or simple_move. Does not mention prerequisites or conditions for use.

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