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get_attachment_content

Retrieve binary content of an attachment, such as an image, by its attachment ID. Optionally save the file to a local path.

Instructions

Get the binary content of an attachment (e.g., download an image)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
brainIdNoThe ID of the brain
saveToPathNoOptional path to save the file locally
attachmentIdYesThe ID of the attachment
Behavior2/5

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

No annotations provided, so description carries full burden. It does not disclose return format (binary stream, base64, etc.), authentication needs, or potential side effects. Minimal behavioral info beyond the action.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence, front-loaded with key action, no superfluous words. Highly concise.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with 3 parameters and no output schema, the description is too sparse. It lacks details on handling binary data, size limits, or example usage. More context needed for effective use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the parameter descriptions exist. The tool description adds context about binary content but does not elaborate on parameter semantics beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action 'get binary content' and provides an example 'download an image'. It differentiates from sibling tools like 'get_attachment' (likely metadata) by specifying binary content, though not explicitly.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus alternatives like 'get_attachment' or 'list_attachments'. No prerequisites or when-not-to-use mentioned.

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

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