unmark_duplicate

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the primary effect (removing the duplicate flag) but omits any side effects, reversibility, permission requirements, or error behavior. For a mutation tool, this is a notable gap.

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 concise and well-structured: the main action is front-loaded in the first sentence, followed by a brief, relevant parameter explanation. No unnecessary words or repetition.

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 the tool's simplicity, the description covers the essential purpose and parameter, and an output schema exists. However, it lacks explicit usage exclusions or behavioral caveats, making it adequate but not comprehensive.

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 description coverage is 0%, but the description compensates by explaining that thread_id is the global ID sourced from list_threads or search_threads. This adds meaningful context beyond the bare integer type in the schema.

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: 'Remove the duplicate mark from a thread, restoring it as a standalone thread.' It uses a specific verb ('remove') and resource ('duplicate mark on a thread'), and distinguishes itself from sibling tools like mark_duplicate (the inverse operation).

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 implies usage by explaining the effect (restoring a thread as standalone) and provides a hint that thread_id comes from list_threads or search_threads. However, it does not explicitly state when to use this tool versus mark_duplicate or exclude any alternative scenarios.

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