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

With no annotations, the description carries the full burden and does well: it discloses the migration side effect, the asynchronous approval outcome, the owner notification, and the correct follow-up call. It omits permissions required and whether the promotion is reversible/rollback-able, which leaves some behavioral gaps for a mutation tool.

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?

Three tightly written sentences that front-load the core action before the migration side effect and the async approval path. Every sentence carries actionable information with 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?

No output schema or annotations exist, so the description must cover behavior and largely does: it explains the migration step, the approval branch, and the polling follow-up. Minor gaps remain around what a non-pending success returns and any permission requirements.

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 100%, so to, from, and project are already documented in the schema. The description restates the staging/production defaults already present in the schema descriptions, adding no new syntax or constraint information. Baseline 3 when the schema does the heavy lifting.

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 (promote) and the resource/scope (a release running on one environment to another), with the default direction spelled out. It is clearly distinguishable from siblings like deploy and rollback, which concern getting code out rather than moving an existing release between environments.

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 context and a default (staging to production) plus explicit follow-up behavior when the call returns pending_approval (tell the owner, poll approval.status). It does not explicitly contrast with deploy or state when promotion is inappropriate, so it stops short of full when/when-not guidance.

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