adb_file_touch

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

Discloses important behavioral details: timestamp resolution on FAT32 and volatility on tmpfs. Without annotations, this is beneficial, but could further clarify behavior for existing files (e.g., updates timestamps without overwriting content) and error conditions.

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?

Concise 4-sentence description that front-loads purpose and efficiently covers modes and file system quirks. No unnecessary text.

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?

Covers purpose, modes, and relevant file system details. Lacks explanation of return values or error handling, but overall sufficient for understanding core behavior.

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 100%, so the descriptions in the schema already define parameters. The tool description adds context on modes but does not elaborate further on parameter specifics beyond what the schema provides.

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?

Clearly states the tool creates empty files or updates timestamps, with three distinct modes. Distinguishes from sibling file tools by focusing on file creation and timestamp manipulation.

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?

Describes three modes and file system specifics (FAT32, tmpfs), which helps choose appropriate usage. However, lacks explicit guidance on when to prefer this tool over alternatives like adb_file_write or adb_file_stat.

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