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Nolex13

viaris-mcp

by Nolex13

set_home_power_limit

Set the maximum household power in watts to avoid exceeding contracted power. Propagates the limit in master/slave setups; warns if chargers are independent.

Instructions

Sets the maximum power in watts that the household electrical supply can deliver. If the chargers are in an SPL master/slave setup the limit is written to the master and propagates; if they are independent, the response includes a warning about the risk of exceeding the contracted power.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitWYesPower limit in watts, e.g. 4000.
chargerNoCharger name. Unnecessary if only one is configured.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.1

TDQS

A4.4/5.0
Behavior4/5

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

With no annotations, the description carries the full burden and does well by explaining the propagation behavior in SPL setups and the warning in independent setups. It identifies a meaningful behavioral difference that the schema and annotations would not convey, though it omits details about persistence or side effects.

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

Conciseness5/5

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

Two sentences, front-loaded with the core purpose and followed by the key conditional behavior. No filler or redundant restatement of schema fields.

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

Completeness4/5

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

Given the tool's moderate complexity and lack of output schema, the description covers the core action, the setup-dependent behavior, and the warning response. It does not explicitly describe the success response format, but for a straightforward setter this is a minor gap.

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

Parameters4/5

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

Schema coverage is 100%, so the baseline is 3. The description adds value by clarifying that limitW applies to the household electrical supply rather than a single charger, and the master/slave explanation gives useful context for how the charger parameter behaves.

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

Purpose5/5

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

States a specific action ('Sets') and a specific resource ('maximum power in watts that the household electrical supply can deliver'). It clearly distinguishes itself from the sibling set_charger_current_limit by referring to the household supply rather than an individual charger.

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

Usage Guidelines4/5

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

The description gives clear context for when the tool applies, particularly noting the SPL master/slave versus independent setup behavior. It does not explicitly name alternative tools or state when not to use this one, but the household-supply framing makes the intended use reasonably clear.

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