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Image is an Agent Skill for documents published in the axoviq-ai/synthadoc repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

Extract text from images using a vision LLM

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How to use this skill

Bring this guide into your coding agent with a prompt tailored to the tool you use.

  1. Open your project in Codex.
  2. Copy and paste the prompt below.
  3. Review files and risks before approving any action.
Prompt to paste
Inspect the Agent Skill at https://github.com/axoviq-ai/synthadoc/blob/HEAD/synthadoc/skills/image/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/image, but wait for my approval before writing files or running scripts.

Copying this prompt does not install or run the skill. Review third-party files before use.

Image Skill

Base64-encodes the image and passes it to a vision-capable LLM that extracts all text and key information. Returns the LLM's response as result.text.

Setup

No pip dependency — the skill uses only the Python standard library plus a LLM provider you supply at construction time. The provider can be any object that implements the complete() interface (see below).

Standalone usage

import asyncio
from synthadoc.skills.image.scripts.main import ImageSkill

# ImageSkill REQUIRES a vision-capable provider — calling extract() without
# one raises ValueError immediately.
skill = ImageSkill(provider=my_provider)

async def main():
    result = await skill.extract("/path/to/screenshot.png")
    print(result.text)          # extracted text from the image
    print(result.metadata)      # {"tokens_input": N, "tokens_output": N}

asyncio.run(main())

Provider interface — any object with this async method:

async def complete(
    messages: list,             # list of Message objects from synthadoc.skills.base
    system: str | None = None,
    temperature: float = 0.0,
    max_tokens: int = 4096,
) -> object                     # must have .text (str), .input_tokens (int), .output_tokens (int)

Build the provider with any vision-capable model. Message is importable from synthadoc.skills.base — no dependency on synthadoc.providers:

from synthadoc.skills.base import Message

Supported image formats: .png, .jpg/.jpeg, .webp, .gif, .tiff

When this skill is used

  • Source path ends with .png, .jpg, .jpeg, .webp, .gif, or .tiff
  • User intent contains: image, screenshot, diagram, photo