assign_thread

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

With no annotations, the description carries the full burden and explicitly discloses that passing null or empty unassigns, which is a key behavioral trait. It doesn't discuss permissions or error cases, but the core semantics are transparent for a simple mutation.

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 plus a minimal args list; every sentence serves a purpose and the main action is front-loaded. No 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 two-parameter assignment tool with an output schema, the description covers the operation, parameter semantics, and unassign behavior. It doesn't address edge cases, but overall context is adequate.

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 0%, but the description compensates by explaining assigned_to semantics (empty/omit = unassign) and clarifying thread_id. The assigned_to definition adds meaning beyond the schema's type/default.

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 uses a specific verb 'assign' with a clear resource 'thread' and target 'agent or user', and distinguishes itself from sibling thread tools like tag_thread or set_thread_status by describing a distinct 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 when to use (to manage thread assignment) and explicitly explains the unassign behavior, but it doesn't name alternatives or exclusion scenarios. It's functional but lacks explicit 'use this instead of X' guidance.

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