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

Annotations already declare idempotentHint=true, destructiveHint=false, readOnlyHint=false, so the safety profile is covered. The description adds non-obvious behavior: only project-owned IDs are published, no instance/grant/agent side effects occur, partial or uncertain receipts must be retained, and fidelity is limited to a declared semantic/MCP subset plus read-only record UI rather than vendor REST/UI emulation.

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?

Front-loads the core action, then requirements, then explicit non-actions, then recovery, then the fidelity caveat. Dense but every clause carries information; the final sentence on tool fidelity is somewhat broad and could be trimmed.

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 six-parameter, no-output-schema mutation tool, the description covers prerequisites, idempotency/recovery behavior, and blast radius. Return-value expectations are not described, but the recovery-with-key instruction largely substitutes for that for an agent operating under uncertainty.

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 only 17%, so the description must compensate. It explains releaseDigest (comes from catalog discovery), operationKey (must be saved and reused), and the initialData choices ('explicitly empty or synthetic starter dataset'), but projectId, environmentId, and catalogId are never characterized beyond being required.

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 resource with scope: 'Acquire one exact qualified built-in release into the selected project's private build and explicitly empty or synthetic starter dataset.' It further separates itself from siblings by declaring what it does NOT do (allocate an instance, issue a grant, execute an agent), which distinguishes it from service_invoke/service_create/service_control without opening their schemas.

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?

Gives concrete preconditions ('Requires the releaseDigest returned by catalog discovery and a saved operationKey') and an explicit recovery path ('recover with catalog_acquisition_by_key using the same scope/key, never silently select latest or create a replacement'). It stops short of naming the full set of alternatives an agent might weigh, but the when-to-use and never-do guidance is unambiguous.

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