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kurtzhi

fsext-mcp-server-python

by kurtzhi

fs_ocr_extract_text

Extract text from image files via Tesseract OCR. Input image path and optional language to retrieve recognized text.

Instructions

Extract text from image via Tesseract OCR.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
langNoeng
image_pathYes
tessdata_pathNo
tesseract_bin_pathNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

No annotations are provided, so the description carries the full burden. It only states the operation and does not disclose dependencies on Tesseract binaries, potential side effects, error behavior, or whether the image file is modified (it is not specified). This is a notable gap for a tool with zero annotation support.

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, direct sentence with no redundant information. It is front-loaded with the key action and resource.

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?

With zero annotations and zero schema descriptions, this minimal description is insufficient for a 4-parameter tool. It does not mention prerequisites like Tesseract installation, output format details, or failure scenarios, even though an output schema exists but is not shown.

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

Parameters2/5

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

Schema description coverage is 0%, and the description does not explain the meaning of image_path, lang, tessdata_path, or tesseract_bin_path. The parameter names are somewhat self-explanatory, but the description adds no semantic value beyond the schema.

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 uses the specific verb 'Extract' with the object 'text' and the source 'image', and specifies the method 'via Tesseract OCR'. This clearly distinguishes it from sibling file and image manipulation tools.

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

Usage Guidelines3/5

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

The description implies use for OCR on images, but provides no explicit guidance on when to use this tool versus alternatives like fs_read_full_text for text files or fs_search_in_file_by_content. There is no mention of exclusions or prerequisites.

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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