macvis

macvis is a skill for Claude Code, Codex from junmo-kim/mac-local-vision. It costs 294 tokens per session (1,529 once invoked), scanned A, original, MIT.

A macOS command-line tool for reading and locating information in images, screenshots, and PDFs on your own device.

In plain words
What is it for?
Use it for OCR, finding the screen position of words, scanning or creating QR codes and barcodes, classifying images, grouping photos by face, and straightening or extracting structured content from photographed documents.
Why use it?
It lets an agent inspect visual files without sending them to an online service or using text-generation tokens.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/junmo-kim/mac-local-vision/macvis
Any agent
npx skills add junmo-kim/mac-local-vision --skill macvis
Clone the repo
git clone --depth 1 https://github.com/junmo-kim/mac-local-vision

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for macvis

README.md
[![agentmods](https://agentmods.dev/badge/skills/junmo-kim/mac-local-vision/macvis.svg)](https://agentmods.dev/skills/junmo-kim/mac-local-vision/macvis)
Your own site
<a href="https://agentmods.dev/skills/junmo-kim/mac-local-vision/macvis"><img src="https://agentmods.dev/badge/skills/junmo-kim/mac-local-vision/macvis.svg" alt="Measured on agentmods" height="20"></a>
Per session 294 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,529 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00294 $0.01529
Opus 5 $0.00147 $0.00764
Sonnet 5 $0.00059 $0.00306
Haiku 4.5 $0.00029 $0.00153

Measured 4d ago against content hash 8784ebfce8e5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

macvis scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/macvis/SKILL.md · 89 lines

How it starts

The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.

macvis

macvis reads and locates things in images, on-device. Put the binary on your PATH (repo README → Install) and call it. Output is YAML by default; add --format json to parse.

Which command

You need Command
Read all text from an image / screenshot / PDF macvis ocr <path>
The click-point (x,y) of a specific word — E2E / UI targeting macvis find <path> --target "<text>"
Scan a QR code or barcode (any symbology) macvis barcode <path>
Scan for a QR code only (skip other symbologies) macvis qr <path>
Tag/classify what an image contains (labels, not free text) macvis classify <path>
Generate a scannable QR code PNG macvis make-qr "<text>" --out <path>
Find a document's four corners in a photo macvis document-bounds <path>
Flatten/straighten a photographed document into a scan macvis rectify-document <path> --out <path>
Extract a document's title/paragraphs/tables/lists with layout preserved macvis document-ocr <path>
To interpret an image (describe, reason, summarize) — macOS 27 macvis ask <path> --prompt "<question>"
To extract structured JSON fields from an image (schema-constrained) — macOS 27 macvis ask <path> --prompt "<question>" --schema <path|inline-json>
Group photos by person macvis sort-faces <dir>
Find photos matching a given face macvis find-person --target <face.jpg> --dir <dir>
Check what runs on this machine macvis doctor

Rule of thumb: ocr to read everything, find to get one word's pixel to click/assert, document-ocr when the layout (table cells, list items) matters rather than flat lines, ask only when you need interpretation rather than raw text.

Examples

macvis ocr ./receipt.png                          # full text + per-line entries
macvis ocr ./receipt.png --words --format json    # per-word pixel boxes, JSON
macvis find ./screen.png --target "Submit"        # → x,y click center + bounding box
macvis find ./screen.png --target "결제하기"        # non-Latin works (locale-aware)
macvis ocr ./doc.pdf --page 2                      # PDF page (rasterized)
macvis barcode ./ticket.png                        # scan every QR/barcode symbology
macvis qr ./ticket.png                             # scan for a QR code only
macvis classify ./photo.jpg                        # tag against a 1,303-label taxonomy
macvis make-qr "https://example.com" --out ./qr.png  # write a scannable QR PNG
macvis document-bounds ./receipt.jpg                  # find a document's 4 corners
macvis rectify-document ./receipt.jpg --out ./flat.png # flatten a photographed document
macvis document-ocr ./invoice.png                    # title/paragraphs/tables/lists, structured
macvis ask ./receipt.png --prompt "extract the fields" --schema ./receipt-schema.json  # structured JSON answer
macvis sort-faces ./photos --output-dir ./by-person  # cluster a folder of photos by person

Read the full file on GitHub · 89 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 89 lines · 294 tokens per session scan A 8784ebfce8e5

Subscribe to this mod's changes

macvis is a skill published in the GitHub repository junmo-kim/mac-local-vision (58 stars, last pushed 13d ago), licensed MIT. It adds 294 tokens to every session and 1,529 once invoked, about $0.0015 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

md2pdf

Convert a Markdown file to PDF with GitHub-style formatting using the md2pdf tool.

joshukraine/dotfiles · 22 tokens

pdf

Use this skill when the user asks to inspect or summarize PDF documents.

xuzhougeng/wispterm · 7 tokens

scan-to-practice

A complete methodology for turning scanned or image-based learning materials into high-quality desktop, web, or mobile practice products. Covers visual transcription, data assembly, answer-key-driven controls and grading, product design, animation, validation, and long-term maintenance. Use when a user wants to…

parz0val0/scan-to-practice · 89 tokens

PDF → spreadsheet — extract data into Excel (Local MCP)

Use when the user wants to pull data out of one or more PDFs (invoices, bank/credit-card statements, receipts, reports, tables) and put it into a spreadsheet. pdfread is one of the most-used tools; this codifies the read-PDF → structure → write-Excel workflow. Powered by Local MCP, on-device.

lanchuske/local-mcp-releases · 82 tokens

foundry-hosted-agent-validation

Step-by-step process for validating a Python Foundry hosted agent sample (under python/samples/04-hosting/foundry-hosted-agents/) end to end — running it locally (native runtime and azd ai agent run) and after deploying it to an Azure AI Foundry project with azd. Use this when asked to validate a hosted agent sample.

microsoft/agent-framework · 82 tokens

chat-complex-documents

Chat with and search your complex documents — ask questions, extract tables and fields, and get answers grounded in the source. Connects the hosted Unstructured Transform MCP server to parse, structure, and enrich PDFs, Word/Excel/PowerPoint, images, scanned files, emails, and 60+ other formats into clean, AI-ready…

vellum-ai/vellum-assistant · 90 tokens