write_hex

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

No annotations exist, so the description must carry behavioral disclosure. It details return value ('OK' on success, error on failure) and the effects of erase_first and verify_after. Lacks context like device state prerequisites or error conditions, but covers core mutation traits adequately.

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?

Five sentences, zero wasted words. Front-loaded with action verb and resource, followed by essential parameter descriptions and usage guidance. Highly efficient.

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?

Output schema exists but return values are described. However, missing parameter descriptions for 5 of 8 parameters and no guidance on when to prefer write_hex over write_memory (a sibling). Prerequisites or device connection state not mentioned. Adequate but incomplete for an 8-parameter tool.

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 has 8 parameters with 0% description coverage. The description explains only 3 parameters (hexfile, erase_first, verify_after) via prose. The remaining 5 (device, tool, serialnumber, serialport, baudrate) are completely undocumented, leaving the agent uninformed about their purpose or defaults.

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 opens with a clear verb+resource statement: 'Write an Intel HEX file to the target device.' It distinguishes from siblings by noting 'prefer the flash tool instead' for full firmware updates, and implies a specialized role for Intel HEX files.

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?

Explicitly states when to use alternatives: 'For the common case of a full firmware update, prefer the flash tool instead.' Also describes configurable behaviors (erase_first, verify_after) guiding selection of options.

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