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

No annotations are provided, so the description carries the full behavioral burden, and it discloses nothing: not whether the tool is read-only or mutating, whether it requires an existing app/room context, what it returns, or side effects. '(planner)' implies a purely informational role but does not state it.

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 text is short but that brevity is under-specification rather than conciseness — there is only one wasted-ish fragment with no substantive content to front-load. Nothing an agent needs is present, so the brevity earns no credit.

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 3-parameter planning tool with no annotations and no output schema, the description is completely inadequate. It provides no inputs semantics, no usage context, and no indication of what a returned 'plan' contains.

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?

With 3 parameters at only 33% schema coverage, the description must compensate, and it adds nothing. appType is documented as the near-tautological 'Application type', backendMode carries an enum but no description of cloud vs self-hosted vs local semantics, and requestedFeatures has no explanation of accepted values.

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 is 'MediaSFU React Native :: integration.plan (planner)', which merely restates the tool name and namespace prefix. The only added token, 'planner', hints at producing a plan but names no resource, action scope, or output. It does not distinguish this from the near-identical android::/swift::/shared::integration.plan siblings.

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 when-to-use guidance, no prerequisites, and no mention of alternatives such as shared::integration.plan or the platform-specific env.preflight/app.scaffold tools. An agent has no basis for choosing this tool over its many siblings.

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