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pixera_set_projector_blackout

Blank or restore a named projector's output by setting its blackout state on or off.

Instructions

Blackout (or restore) a projector by name.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
onYes
projector_nameYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.0

TDQS

C2.7/5.0
Behavior2/5

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

With no annotations, the description carries the full behavioral burden. It does convey that one tool handles both blackout and restore, which helps interpret the boolean, but it does not say whether this is a live state change, whether it requires the projector to be online, or whether it is immediately visible on output.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single short sentence, front-loaded with the action. It is efficient with no filler, though its brevity is the source of the missing detail rather than a separate flaw.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists, so return values need not be explained, but for a no-annotation mutation tool with 0% parameter coverage the description is too thin. It omits the boolean polarity, name sourcing, and any state/permission context an agent would need to invoke it correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must disambiguate both parameters. 'By name' partially clarifies projector_name, but the polarity of the 'on' boolean is left ambiguous — it is unclear whether on=true means blackout engaged or restored, which is critically important for a toggle.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description gives a specific verb pair (blackout/restore) and a clear resource (projector), scoped by name. It does not explicitly distinguish itself from siblings like pixera_list_projectors or pixera_get_projector_pose, but the purpose is unambiguous.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no when-to-use or when-not-to-use guidance, and no pointer to alternatives or prerequisites. It never tells the agent that the projector name must first be obtained (e.g. via pixera_list_projectors), nor when blackout is appropriate versus other projector operations.

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