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davidlin2k

POX MCP Server

by davidlin2k

get_flow_stats

Retrieve flow statistics from a specified OpenFlow switch, optionally filtering by match, table, or output port.

Instructions

Get flow statistics from a switch

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
dpidYes
matchNo
table_idNo
out_portNo
Behavior2/5

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

With no annotations provided, the description must fully disclose behavioral traits. It only implies a read operation ('Get') but does not mention if it is expensive, requires authentication, or any side effects. This is insufficient for safe selection.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness2/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very short (one sentence), which might seem concise, but it fails to convey necessary information. It does not earn its place because it adds little value beyond the tool name.

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

Completeness1/5

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

Given the tool has 4 parameters, no output schema, and no annotations, the description is severely incomplete. It does not explain return values, parameter constraints, or how to use the tool correctly.

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 add meaning to any of the 4 parameters (dpid, match, table_id, out_port). The agent receives no help understanding parameter roles beyond their names.

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 'Get flow statistics from a switch' clearly states the action (get) and resource (flow statistics from a switch), distinguishing it from siblings like get_switch_desc or get_switches. However, it could be more specific about what statistics are included.

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 given on when to use this tool vs alternatives, such as prerequisites, conditions, or when not to use it. The description lacks any contextual usage advice.

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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