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shigechika

io.github.shigechika/junos-mcp

by shigechika

get_config_diff

Compare current Junos device configuration against a specified rollback version to identify changes.

Instructions

Show configuration difference compared to a rollback version.

Args: hostname: Target device hostname (must exist in config.ini) rollback_id: Rollback version to compare against (0-49, default 1) config_path: Path to config.ini (empty string uses default search)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
hostnameYes
rollback_idNo
config_pathNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

No annotations provided, so description must convey behavior. It mentions comparing to a rollback version but doesn't explicitly state read-only nature or permission requirements. Adequate but could be more transparent.

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?

Extremely concise: one line for purpose, then a neat list of parameters with defaults and constraints. Every sentence adds value.

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 an output schema exists, description needn't detail return values. It covers parameters well but misses prerequisites like requiring saved rollback versions or error handling. Slight gap but overall sufficient.

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?

With 0% schema description coverage, the Arg descriptions add crucial meaning: hostname must exist in config.ini, rollback_id range 0-49, config_path fallback. Effectively compensates for missing schema descriptions.

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 shows configuration differences compared to a rollback version, using specific verb and resource. It distinguishes from siblings like 'get_config' and 'compare_version'.

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 explicit guidance on when to use this tool vs alternatives like 'get_config' or 'compare_version'. Only parameter notes are provided, not usage context.

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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