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Cisco Catalyst SD-WAN MCP Server

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get_validator_valid_devices

Retrieves authorized device lists (vEdges, vSmarts, or vManage ID) held by a specified Validator (vBond) to verify fabric control-plane membership.

Instructions

Get the authorized device lists held by a Validator (vBond).

Input Schema

NameRequiredDescriptionDefault
listNoWhich list to return (default: vedges)
device_idYesValidator (vBond) system-ip

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

B3.1/5.0
Behavior2/5

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

With no annotations, the description carries the full burden of behavioral disclosure, yet it only implies read-only behavior through the word 'Get'. It says nothing about required permissions, whether the lists are cached/live, what 'authorized' means in this context, or what each list contains.

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 tightly worded sentence with no filler, and the resource is front-loaded. It is efficient, though the brevity comes at the cost of the guidance dimensions above rather than being purely virtuous.

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?

For a two-parameter read tool with a fully described schema, the description identifies the target object and semantics adequately, though it omits return-shape notes (no output schema exists) and sibling differentiation.

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

Parameters3/5

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

Schema description coverage is 100%: the enum values (vedges, vsmarts, vmanage_id) with a documented default and the device_id system-ip are fully explained in the schema. The description adds no parameter detail beyond that, so the baseline 3 applies.

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?

States a specific verb ('Get') and a specific resource ('authorized device lists held by a Validator (vBond)'), and clarifies the vBond terminology. However, it does not distinguish itself from the very similar sibling get_control_valid_devices, which likely returns the analogous data for controllers, leaving the agent to infer the boundary.

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 statement of when to use this tool, when not to, or which sibling to prefer. An agent choosing between this and get_control_valid_devices, get_validator_connections, or get_validator_summary gets no routing guidance at all.

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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