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

Annotations already declare this as a non-read-only, non-destructive, closed-world mutation. The description adds a genuinely useful behavioral fact beyond that: the mount is not live until the target deployment is redeployed. It omits auth requirements and what happens on re-attach, but with annotations covering the safety profile this is solid.

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

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

Two tightly written sentences, with the core action front-loaded and the redeploy caveat immediately after. No filler.

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

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

For a simple attach operation with annotations present and no output schema, the definition covers the essential operational gotcha (redeploy required). It could be more complete about how to obtain the volume/deployment IDs and behavior on duplicate mounts, but nothing critical is missing.

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

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

Schema coverage is only 33%: mountPath is documented (default /data) while volumeId and deploymentId are bare strings. The description restates the three concepts but adds no ID format, source, or validation detail to compensate for the undocumented required parameters.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and both resources (attach a volume to a deployment) plus the mount point, which cleanly separates it from nexusai_volume_detach and the bucket_attach siblings. It is clear without explicitly naming an alternative, so a 4 rather than 5.

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

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

The description gives an important workflow prerequisite ('requires redeploy... for the mount to take effect') but never states when to choose this over nexusai_volume_detach or nexusai_bucket_attach, nor any preconditions on volume/deployment state. Usage is implied rather than directed.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.