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scpi-mcp

scpi-mcp

by armchairdeity
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

capability_report

Report the connected oscilloscope's capabilities including channel count, bandwidth, memory depth, and installed options. Use it to learn what the instrument can do before operating.

Instructions

Report the connected instrument's detected capabilities.

Returns channel count/ids, bandwidth, source & logic support, max memory
depth, and installed options. Takes no arguments; requires a prior
self_config. Use it to learn what the scope can do before driving it.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "capability_report"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed4 schema fields changedv0.1.1
    • removedInput schema / properties / args
      Removed value: -{
-  "title": "Args"
-}
    • removedInput schema / properties / kwargs
      Removed value: -{
-  "title": "Kwargs"
-}
    • removedInput schema / required
      Removed value: -[
-  "args",
-  "kwargs"
-]
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "title": "capability_report_implDictOutput",
+  "type": "object"
+}
  2. First observedv0.1.0

TDQS

A4.5/5.0
Behavior4/5

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

With no annotations, the description effectively discloses behavioral traits: it is a read-only report, requires a prerequisite, and explains its purpose. No contradictions or hidden effects mentioned.

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 concise sentences: first sentence lists purpose and outputs, second provides usage context. Every sentence adds value, no redundancy.

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

Completeness5/5

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

Given output schema exists, description does not need to detail return values. It covers prerequisite, purpose, and output scope, fully sufficient for this simple tool.

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?

No parameters exist in schema, so description correctly states 'Takes no arguments.' Baseline 4 applies as there is nothing more needed.

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?

Clearly states the tool reports detected capabilities of the connected instrument, listing specific outputs like channel count/ids, bandwidth, etc. Distinguishes itself from sibling tools which focus on acquisition, configuration, or measurement.

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?

Explicitly notes it requires a prior self_config and should be used to learn capabilities before driving the instrument. Provides clear context but could be more explicit about when not to use it.

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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