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

Annotations already declare destructiveHint=true, idempotentHint=false, and openWorldHint=true, so the safety profile is covered. The description adds the meaningful approval requirement ('exact user approval in BEON PASS'), but says nothing about downtime, state effects, or what happens to the existing deployment.

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 short sentences with the action front-loaded and the constraint placed immediately after. There is no filler, though the content is arguably under-developed given the tool's complexity.

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 destructive, non-idempotent mutation with 8 parameters, no output schema, and zero schema documentation, the description is far too thin. It omits the effect of a restart, how the BEON PASS approval ties to the approval_id parameter, and any prerequisite/permission detail an agent needs to call it correctly.

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?

With 8 parameters and 0% schema description coverage, the description must carry parameter meaning but does not. It only implies a deployment identifier via 'a deployment' and vaguely gestures at approval; the beon_* parameters and the required/exact format of approval are never explained.

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+resource ('Restart a deployment'), which is distinguishable from siblings like railway_stop_deployment, railway_cancel_deployment, and railway_rollback_deployment. It does not, however, explicitly contrast itself against those closest alternatives, leaving the agent to infer the distinction.

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 sentence 'Requires exact user approval in BEON PASS' communicates a real precondition for invocation, which is useful. But it gives no guidance on when to choose restart over redeploy/rollback/stop, and no exclusions, so usage is only implied.

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