farscry extract

Converts any screenshot into a typed VASP output with screen classification, UI tree, and affordances.

Usage

farscry extract <image>
farscry extract <image> [options]
cat <image> | farscry extract
farscry extract --from-clipboard

Examples

# Single image
farscry extract screenshot.png

# From stdin
cat screenshot.png | farscry extract

# From clipboard (Cmd+Shift+4 on macOS)
farscry extract --from-clipboard

# Batch (parallel processing)
farscry extract *.png
farscry extract img1.png img2.png img3.png

# JSON output
farscry extract screenshot.png --json

# Save to file
farscry extract screenshot.png -o context.vasp

# Affordances only
farscry extract screenshot.png --affordances

# One-line agent_context summary
farscry extract screenshot.png --context

# Explicit language
farscry extract screenshot.png --lang por

# Multi-language
farscry extract screenshot.png --lang eng+por

Options

Flag	Default	Description
--from-clipboard	false	Read image from system clipboard
--json	false	Output JSON instead of VASP
-o <file>	stdout	Write output to file
--affordances	false	Output only interactive elements
--context	false	Output only the one-line agent_context summary
--text-only	false	Suppress image forwarding to workflow
--lang <code>	auto	Force language (e.g. eng, por, eng+por)
--max-size <n>mb	10mb	Override 10MB input size limit
-v	false	Verbose, show processing steps
--debug	false	Full debug output to stderr

Output format

See VASP Overview for the full schema.

=== farscry visual context ===
screen_type: config
state_id: phash:<16-char-hex>
confidence: high
lang: eng
agent_context: "<one-line summary>"
---
[top-center]   heading  "Payment Settings"
[middle-right] button   "Save Changes"   enabled:true
[bottom]       error    "Value must be ≤ 10000"

affordances:
  click → "Save Changes"  at (400,300)
  type  → "Max Value"     at (200,120)

Supported input formats

Format	Magic bytes
PNG	89 50 4E 47
JPEG	FF D8 FF
WebP	52 49 46 46
GIF	47 49 46 38
TIFF	49 49 2A 00 / 4D 4D 00 2A

Input validation uses magic bytes. File extension is ignored..

Exit codes

Code	Meaning
0	Success
1	Input error (file not found, wrong format, too large)
2	Processing error (OCR failed)
3	Configuration error (language not installed)

Performance

Platform	Warm daemon	Cold CLI
Apple Silicon M-series (CoreML)	38ms	~350ms
x86 CPU (ORT)	~222ms	~350ms

First run downloads OCR assets (~12MB). Subsequent runs use the local cache. Use farscry serve --mcp to keep OCR engines warm and hit the 38ms figure consistently.