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prune_volumes

DestructiveIdempotent

Remove unused Docker volumes to reclaim disk space. Filter volumes to control which volumes are removed.

Instructions

Remove unused volumes.

args: filters - Filters to apply returns: dict - Information on deleted volumes and reclaimed space

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
filtersNo
Behavior3/5

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

Annotations already indicate destructive and idempotent behavior. The description adds return format details but doesn't elaborate on 'unused' or confirmation steps.

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?

The description is concise, front-loaded, and every sentence adds value: purpose, parameter, return.

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

Completeness3/5

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

Covers basic purpose, parameter, and return, but lacks examples, definition of 'unused', and caveats for a destructive operation.

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

Parameters2/5

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

With 0% schema coverage, the description only repeats 'filters - Filters to apply' without explaining valid filter structure or examples, failing to compensate.

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 'Remove unused volumes' clearly states the action and resource, distinguishing it from sibling prune tools like prune_containers and prune_images.

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 implies use for cleaning up unused volumes but does not explicitly contrast with remove_volume or provide when-not-to-use scenarios.

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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