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get_device_facts

Retrieve structured facts from an Arista EOS device, including hostname, model, EOS version, uptime, and memory.

Instructions

Return structured device facts: hostname, model, serial, EOS version, uptime, memory.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
hostnameYes
config_pathNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
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. It states that facts are returned but does not mention read-only invariants, failure behavior, or auth requirements. The term 'return' implies a read operation, but explicit safety context is absent.

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?

One succinct sentence that conveys the tool's purpose and expected output. Every word earns its place, with no redundant phrasing.

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

Completeness2/5

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

The description is minimal and lacks critical context: no mention of config_path purpose, no usage distinction from sibling tools, and no details about return encapsulation. Although an output schema exists, the description still leaves the parameter semantics and operation scope under-specified.

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

Parameters1/5

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

Schema description coverage is 0%, and the description does not explain either parameter. 'hostname' is self-explanatory, but 'config_path' is not mentioned at all, leaving a required semantic gap for effective invocation.

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?

The description clearly states the tool returns structured device facts and lists specific fields (hostname, model, serial, EOS version, uptime, memory). This distinguishes it from generic tools, though it does not explicitly differentiate from get_device_facts_batch.

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 is provided on when to use this tool versus alternatives like get_device_facts_batch or get_version. The description simply states what it does, leaving usage context entirely to the agent.

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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