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

Annotations declare readOnlyHint=false, idempotentHint=false, destructiveHint=false, but say nothing about execution semantics. The description adds genuine behavioral traits beyond the annotations: the execution is deterministic, it is guarded by a fingerprint match to prevent stale-input runs, and nested tool calls are depth-bounded. No contradiction with the annotations.

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 sentences with no filler: the first front-loads the action and guard condition, the second adds a nesting constraint. The phrase 'depth-bounded' is slightly vague (no actual limit given), but the sentence still earns its place as a behavioral warning about recursion.

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?

With no output schema, 0% parameter coverage, and four required parameters including two opaque objects (workspace, automation), the description leaves too much for the agent to infer. It doesn't say what happens when the fingerprint does not match, how to obtain the fingerprint, or what an 'automation' object should contain, despite kata_preview_automation being an obvious but unnamed prerequisite.

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 description coverage is 0%, so the description must carry the full burden of explaining parameters. It does give meaning to previewFingerprint — a fingerprint over current inputs that gates the run — and hints that 'current inputs' map to workspace/works. But workspace, works, and automation objects are entirely uncharacterized, leaving three of four required parameters unexplained.

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?

The description uses a specific verb-resource pair — 'Run a deterministic automation' — and adds a distinguishing guard condition ('only when its preview fingerprint still matches current inputs'). It implicitly contrasts with kata_preview_automation (preview vs. run), but never names the sibling, so differentiation is inferred rather than explicit.

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 states a hard precondition for invocation: the preview fingerprint must still match current inputs, which clearly implies a preview-then-run workflow. However, it never names kata_preview_automation as the required precursor, nor does it explain when to prefer alternatives like kata_execute_program. Usage context is present but the routing to alternatives is left implicit.

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