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ziyuyu23

k8s-readonly-mcp

by ziyuyu23

list_pods

List all pods in a specified Kubernetes namespace, defaulting to 'default'. Use 'all' to retrieve pods across every namespace.

Instructions

List pods in a namespace (defaults to 'default'). Use 'all' for every namespace.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
namespaceNodefault

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior4/5

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

With no annotations, the description bears full burden. It conveys that the tool is a read-like operation listing pods, and discloses the special 'all' behavior. This is sufficient for a simple list tool, though it could mention authentication or rate limits.

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?

The description is concise with two sentences, front-loaded with the main action. Every sentence contributes; no wasted words.

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 the low complexity (1 parameter, simple output) and presence of an output schema, the description is complete enough. It covers core functionality, default behavior, and special values.

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?

Schema coverage is 0%, but the description adds value beyond the schema by explaining the default value ('default') and the special 'all' usage. This compensates for the lack of schema-level parameter documentation.

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 lists pods in a namespace, with a default namespace and a special 'all' value. This distinguishes it from siblings like list_namespaces and list_deployments, though it doesn't explicitly differentiate them.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides implicit usage guidance by specifying the default namespace and the 'all' option, but it lacks explicit when-to-use or when-not-to-use instructions compared to sibling tools.

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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