expo_setup_eas

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only notes 'Pro feature' and does not state that this is likely a mutating setup operation, whether it modifies project files, authenticates, or requires network access. This is a significant gap for a setup 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?

The description is a single, compact sentence with no filler. The main action is front-loaded and the Pro feature note is a meaningful qualifier. It is concise, though under-specified in other dimensions.

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 no annotations, no output schema, and incomplete parameter documentation, this description is insufficient. It covers only the basic purpose and a licensing note, omitting side effects, prerequisites, and parameter semantics needed for safe and correct invocation.

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 only 50%, with directory described but api_key left undocumented in both the schema and description. The description does not explain the purpose of either parameter, especially api_key, leaving the agent to guess its role.

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 'Set up EAS Build and Submit (Pro feature)' clearly identifies the action and resource. It distinguishes itself from sibling tools like expo_generate_project and expo_add_config by naming a specific Expo service. However, 'Set up' is somewhat generic and doesn't specify what the setup entails.

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?

No guidance is given on when to use this tool versus alternatives, nor are prerequisites mentioned. The 'Pro feature' hint implies a licensing condition but does not explain context or exclusions for using EAS Build and Submit.

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