broadcast_add

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

With no annotations provided, the description carries full burden but offers minimal behavioral context. It states the tool creates something but doesn't disclose what happens after creation (e.g., whether the group is immediately active, if it persists across sessions, what permissions are needed, or what the output contains). This is inadequate for a creation tool with zero annotation coverage.

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 brief with two sentences: a purpose statement and parameter explanation. The Args section is clearly separated. However, the title being null and lack of output explanation slightly reduce structural completeness.

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 1 parameter with 0% schema coverage and an output schema exists, the description provides basic purpose and parameter meaning but lacks important context. For a creation tool with no annotations, it should explain more about the broadcast group concept, how it relates to other broadcast tools, and what the creation entails.

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 adds basic semantics for the single parameter: 'List of session IDs to include in the broadcast group.' This clarifies what session_ids represents beyond the schema's type information. However, it doesn't explain format constraints, valid session ID sources, or minimum/maximum list size.

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 verb 'Create' and the resource 'broadcast group', specifying it's done 'with specific sessions'. This distinguishes it from siblings like broadcast_on/off which likely toggle broadcast state rather than create groups. However, it doesn't fully differentiate from potential session grouping tools that might exist.

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 about when to use this tool versus alternatives. While siblings include broadcast_on and broadcast_off, the description doesn't explain the relationship between creating a broadcast group and turning broadcast on/off, nor does it mention prerequisites like needing existing sessions.

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