setup_fastlane

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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It mentions some defaults (copyright auto-set, app_review_information, etc.) but does not warn about potential overwrites of existing files, permission requirements, or side effects. For a file generation tool, this is a significant gap.

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 concise (two sentences) and structured as a single sentence followed by a bulleted list of includes. Every part adds value without redundancy. It is easy to scan and understand.

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 12 parameters and no output schema, the description covers the main output files and some defaults. However, it lacks details on error handling, prerequisites (e.g., fastlane must be installed), or the exact structure created. For a complex setup tool, more context would be helpful.

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 100%, so the schema already documents all 12 parameters. The description adds some value by mentioning defaults (e.g., copyright auto-set, precheck_include_in_app_purchases: false) that are not in the schema, but it does not explain each parameter's role or provide examples. Baseline 3 is appropriate.

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 clearly states the tool generates fastlane configuration files for automated app publishing, specifying key files (Fastfile, Appfile, metadata structure). It identifies the target platforms (iOS/Android) and the general purpose. However, it does not explicitly differentiate from sibling tools like populate_metadata or generate_store_listing, but the purpose is still specific enough.

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 provides no guidance on when to use this tool versus alternatives, nor any prerequisites or conditions. It lacks 'use this when...' or 'not for...' statements. The agent must infer usage from the tool name and description alone.

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