file_pull

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

Annotations declare destructiveHint=true and readOnlyHint=false, which is acknowledged by the description implying a write operation to the host machine. However, the description doesn't disclose what happens on failure (partial file?), whether it overwrites existing local files, permission requirements for reading the remote path, or whether directories need to exist. With only a one-line description and no additional behavioral context, this is thin coverage.

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?

A single efficient sentence that communicates the essential purpose. It's appropriately brief with zero wasted words. Could potentially be slightly more verbose to add usage guidance, but as written it's clean and front-loaded with the main purpose.

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 there's an output schema and full schema parameter coverage, the description is somewhat adequate for a simple file-transfer tool. However, given the destructiveHint annotation, some guidance on overwrite semantics for localPath would strengthen completeness. For a straightforward operation with good schema support, this is a minimally acceptable level of description.

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 all three parameters are documented in the schema itself. The description doesn't add parameter-specific details beyond naming the source and destination. The baseline of 3 is appropriate since the schema carries the parameter documentation burden and does so adequately.

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 verb (pull) and resource (file from device to host machine), which is a specific, unambiguous purpose. It distinguishes from siblings like file_push and file_list, though it doesn't name them explicitly. The direction of transfer (device→host) is clearly stated, which is the key differentiator from file_push.

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 like file_push or file_list. It doesn't mention prerequisites (e.g., device connected), when it's appropriate to use, or situations where it would fail. No exclusions or context about use cases is provided.

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