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WendongAI

1pdf

by WendongAI

add_blank_page

Insert blank pages into a PDF at a specified position. Configure page count, size, and placement to organize document structure.

Instructions

Insert blank pages into a PDF at a specific position.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
fileYesAbsolute path to the PDF file
countNoNumber of blank pages to add (default 1)
widthNoPage width in points (default 612 = US Letter)
heightNoPage height in points (default 792 = US Letter)
positionNoInsert after this page number (1-based, default: end)
output_nameNoOutput file path (defaults to same dir with suffix)
Behavior2/5

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

With no annotations, the description carries the full burden of disclosing behavioral traits, but it only states the core action. It does not mention whether the original file is modified in-place or if a new file is created, nor does it describe defaults like appending to the end when no position is specified. The absence of such critical side-effect information is a significant gap for a mutation tool.

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?

The description is a single, well-structured sentence that immediately communicates the tool's purpose. It is concise without unnecessary words, and the placement of 'at a specific position' front-loads the key scoping detail.

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?

The description is too minimal for a tool with six parameters, no annotations, and no output schema. It lacks essential behavioral context such as whether the operation creates a new file or overwrites the original, and it does not explain the default behavior when 'position' or 'count' are omitted. The schema supplies parameter details, but the description fails to provide the broader operational context needed for safe usage.

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?

The input schema provides descriptions for all six parameters (100% coverage), so the description does not need to explain them. The description itself adds no extra semantic detail beyond the schema, but since the schema already handles the heavy lifting, a baseline score of 3 is appropriate.

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

Purpose5/5

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

The description clearly states the action ('Insert blank pages') and the target resource ('a PDF') with a specific scope ('at a specific position'). This distinguishes it from sibling tools like 'delete_pages' or 'extract_pages' by focusing on adding blank pages.

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?

The description provides no guidance on when to use this tool versus alternatives, nor does it mention any prerequisites or exclusions. There is no explicit comparison to sibling tools or context about when this operation is appropriate.

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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