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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is fully covered by structured data. The description adds nothing beyond that — no note on auth/connection requirements, no indication of what happens if no account is connected, and no behavioral context the annotations don't already carry.

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?

A single front-loaded sentence with no filler or redundancy. It is tight, though the brevity edges into under-specification rather than deliberate economy.

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, the description should say something about the shape of the returned identity (fields, scope, workspace/team association), and it does not. Combined with 0% parameter documentation, an agent knows the tool exists but not what it yields or when it is appropriate to call.

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% across 7 parameters (approval_id, beon_app_id, beon_context, beon_resume_id, beon_release_id, beon_environment, beon_connection_id), and the description documents none of them. Although these look like platform-injected plumbing rather than user-facing inputs, the description provides zero compensation for the coverage gap.

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 states a specific verb and resource: 'Identify the connected Railway user.' It is unambiguous about what the tool returns — the currently authenticated user — and no railway sibling overlaps with it. It does not, however, contrast itself with anything or scope the identity result, so it stops short of a 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?

There is no guidance on when to call this versus alternatives, no prerequisites (e.g., must a Railway connection already exist?), and no mention of the closely named vercel_get_account sibling in the list. The agent is left to infer usage entirely from the name.

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