Start an approved internal mobile release

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

The description adds meaningful behavioral context beyond annotations: it consumes paid EAS build minutes, requires a scoped robot user token, and cannot publish publicly. It could mention side effects or rollback, but the cost and authorization disclosure is strong.

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?

Four sentences, each carrying real content: pipeline, cost, prerequisites, and platform/store scope. The main action is front-loaded and there is no filler or repetition.

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?

Given the 8-parameter, paid, release-oriented operation, the description adequately covers action, prerequisites, and exclusions while the schema covers the dry-run/apply flow and output schema covers return values. It would be stronger if it explicitly referenced the readiness/status siblings or the two-phase flow, but nothing critical is missing.

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?

Description adds EXPO_TOKEN context and reinforces confirmation gating, but it does not explain gitRef or changelog semantics, nor does it disambiguate confirmationToken from confirmation. The schema already covers most parameter formats, so this is adequate but not exceptional.

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?

Description names a specific action ('dispatch'), a specific resource ('committed Crave Up EAS Workflow'), and a specific target ('internal TestFlight'), while explicitly ruling out public store publication. This clearly differentiates start_mobile_release from the readiness/status siblings.

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 gives explicit context and exclusions: Android stays CLI-only, public store publishing is not possible, and EXPO_TOKEN plus an exact confirmation phrase are required. It does not name an alternative sibling tool, but the when-not guidance is concrete and actionable.

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