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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and non-open-world, so safety is covered. The description adds the scoping behavior of the group filter but says nothing about result volume, pagination, or what an 'integration' record contains — acceptable given an output schema exists.

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 with the core purpose front-loaded and the optional behavior second — no wasted text. Minor grammar slip ('This tool list') keeps it from the top mark.

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?

With rich annotations, a fully described parameter, and an output schema, the description needs only state purpose and the filter option, which it does. Nothing an agent needs in order to call it is missing.

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 100% and the single optional parameter is fully documented in the schema, including the groupList cross-reference, which the description largely repeats. Baseline 3 applies since the schema carries the explanatory load.

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?

States a specific verb+resource: list available integrations used for scheduling posts. That is clearly distinct from siblings like integrationSchedulePostTool or integrationSchema, though the description does not explicitly name those alternatives to draw the contrast.

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?

Explains the optional filter case and where the group id comes from (groupList tool), which is genuine usage guidance for the parameter. However, it never says when to call this versus integrationSchedulePostTool or integrationSchema, nor any prerequisites, so selection guidance is only implied.

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