flix_block_device

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

No annotations are provided, so the description must disclose behavioral traits, but it only states the action. It fails to explain what blocking does, whether it is reversible, what permissions are required, or the effect on the device and user.

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 extremely short and concise, but it is under-specified. While it earns its place by naming the operation, it lacks context that would make it useful, balancing conciseness against substance.

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?

The tool is a mutation (blocking) with no output schema and no annotations, yet the description provides zero context about behavior, return values, side effects, or reversibility. This is inadequate for a tool that modifies device state.

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 parameter description 'Device ID to block' fully explains the single parameter. The description adds no additional meaning beyond the schema, matching the baseline for high schema coverage.

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 'Block' with a clear resource 'Flix device', which precisely states the tool's action. It distinguishes itself from sibling tools like flix_unblock_device and flix_pair_device by identifying 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?

There is no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites, consequences, or scenarios where blocking is appropriate, leaving the agent to infer usage from the action name alone.

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