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Instrument MCP Server

by zeng-andrew

ps_meas_voltage

Read-only

Measure actual output voltage from a Keysight power supply via SCPI commands. Provides real-time voltage readings.

Instructions

[KEYSIGHT_PS] 测量实际输出电压

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
aliasNodefault
params_jsonNo{}

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

Annotations already declare readOnlyHint=true, so the description's mention of 'measure' is consistent but adds no extra behavioral context (e.g., no mention of device state requirements or measurement latency).

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?

Single sentence, front-loaded with tool purpose. No wasted words, but could be expanded slightly for context without harming conciseness.

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

Completeness3/5

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

Output schema exists but not shown; description doesn't cover return values. Missing context on when measurements fail (e.g., device not connected, output off). Adequate but not comprehensive.

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 has 0% description coverage. The description does not explain the two parameters (alias, params_json), so agents lack guidance on how to use them effectively.

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?

The description clearly states the tool measures actual output voltage, specifying the resource (voltage) and action (measure). It distinguishes from sibling tools like ps_get_voltage (which likely reads set voltage) and ps_meas_current (which measures current).

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?

No guidance on when to use this tool vs alternatives, such as ps_get_voltage or ps_meas_current. No mention of prerequisites or typical scenarios.

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

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