call_tool

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

With no annotations provided, the description carries full burden for behavioral disclosure. It mentions 'robust safety checks' which hints at some safety considerations, but doesn't specify what these checks entail, what permissions are required, whether the operation is read-only or mutative, or what happens on failure. The 'unified branching' phrase is too abstract to provide meaningful behavioral context.

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 appropriately concise at one sentence, but it's not front-loaded with clear purpose. While efficient in length, the abstract terminology ('unified branching,' 'robust safety checks') doesn't earn its place by providing actionable information. It's concise but not effectively structured for clarity.

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 apparent complexity (handling tool calls with branching and safety), the description is incomplete. While an output schema exists (which helps with return values), the description fails to explain the core operation, parameter usage, or behavioral characteristics. For a tool that presumably orchestrates other tool calls, this level of abstraction is insufficient for proper understanding.

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?

The schema has 0% description coverage, so the description must compensate for both parameters. It provides no information about what 'name' and 'arguments' represent, their expected formats, or how they relate to the tool's purpose. The description's abstract language doesn't add meaningful semantic context beyond what the bare schema already shows.

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 states 'Handle tool calls with unified branching and robust safety checks,' which is vague and tautological - it essentially restates the tool name 'call_tool' with abstract modifiers. It doesn't specify what resource is being acted upon or what concrete operation occurs. Compared to sibling 'list_tools,' it fails to distinguish itself with a clear verb+resource combination.

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 is provided on when to use this tool versus alternatives. The description mentions 'unified branching' and 'safety checks,' but these are abstract concepts that don't translate to practical usage scenarios. There's no mention of prerequisites, when-not-to-use conditions, or how this differs from the sibling 'list_tools' tool.

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