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

Goes well beyond the annotations: same-name files are replaced, text only, 2 MB cap, returns saved name and path, and the no_machine state when the user has no computer. The overwrite/2 MB/no_machine details are behaviors the annotations and schema do not convey, giving the agent real operational context.

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 tight sentences, front-loaded with the action and path, then the usage rationale, then constraints, then return/edge state. No filler and every clause carries information.

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?

An output schema exists, yet the description still supplies what matters for correct invocation: size/type limits, overwrite semantics, and the no_machine failure state. Nothing an agent needs to call or interpret this tool 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?

Schema description coverage is 100%, so both parameters (name, content) are already fully documented, including the sanitization rule and 2 MB limit. The description echoes the text-only/2 MB constraint and the 'refer to the file by name' usage, adding only marginal meaning beyond the schema, so baseline 3 applies.

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?

States a concrete verb (puts/writes) plus the exact resource and destination path (/home/user/Desktop) and the reason the agent would want it (so its agent can read/use it). It is clearly distinguishable from the run/interrupt/status siblings, which do not place 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 says when to use it ('instead of pasting long text into a task') and describes the downstream workflow ('refer to the file by name in the task'). It names an alternative behavior rather than a named sibling, so it stops short of a full routing table, but the context is unambiguous.

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