core-image-processing-workflow

core-image-processing-workflow is a skill for Claude Code, Codex from gaelic-ghost/socket. It costs 74 tokens per session (1,318 once invoked), scanned A, original, Apache-2.0.

A guide for building and repairing Core Image image-processing pipelines on Apple platforms. Core Image applies filters and other pixel transformations while working with formats such as RAW, HDR, Core Video, and Metal outputs.

In plain words
What is it for?
Use it for filter chains, compositing, masks, scaling, geometry, RAW development, custom kernels, colour or HDR fixes, render destinations, and Core Image performance diagnosis.
Why use it?
It helps keep filtering, colour handling, rendering, and output ownership separate, avoiding incorrect conversions or performance problems.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Part of the apple-dev-skills plugin — 65 skills, 2 MCP servers shipped together

Good fit Use it for filter chains, compositing, masks, scaling, geometry, RAW development, custom kernels, colour or HDR fixes, render destinations, and Core Image performance diagnosis.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/gaelic-ghost/socket/core-image-processing-workflow
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.

Any agent
npx skills add gaelic-ghost/socket --skill core-image-processing-workflow
Clone the repo
git clone --depth 1 https://github.com/gaelic-ghost/socket

Made for: Claude Code, Codex.

Or install apple-dev-skills, the plugin that ships this one along with the rest of its 65 skills, 2 MCP servers.

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 core-image-processing-workflow

README.md
[![agentmods](https://agentmods.dev/badge/skills/gaelic-ghost/socket/core-image-processing-workflow/github.svg)](https://agentmods.dev/skills/gaelic-ghost/socket/core-image-processing-workflow)
Your own site
<a href="https://agentmods.dev/skills/gaelic-ghost/socket/core-image-processing-workflow"><img src="https://agentmods.dev/badge/skills/gaelic-ghost/socket/core-image-processing-workflow/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for core-image-processing-workflow

Your own site · 80×15
<a href="https://agentmods.dev/skills/gaelic-ghost/socket/core-image-processing-workflow"><img src="https://agentmods.dev/badge/skills/gaelic-ghost/socket/core-image-processing-workflow.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,318 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00074 $0.01318
Opus 5.5 $0.00030 $0.00527
Sonnet 5.5 $0.00015 $0.00264
Haiku 4.5 $0.00007 $0.00132

Measured 1mo ago against content hash 665df2414e2c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

core-image-processing-workflow 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 1mo 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.

plugins/apple-dev-skills/skills/core-image-processing-workflow/SKILL.md · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Core Image Processing Workflow

Purpose

Guide Core Image processing and rendering without turning CIImage into a bitmap wrapper or mixing transformation with file decoding, visual recognition, or display-container ownership. Preserve Core Image, Core Graphics, Core Video, and Metal types until an explicit output boundary.

When To Use

  • Use for Core Image filter chains, compositing, RAW development, custom kernels, color or HDR processing, render destinations, and Core Image performance or correctness repair.
  • Recommend apple-image-representation-workflow when decoding, encoding, metadata, or platform image-container behavior is primary.
  • Recommend the Vision workflow when the requested outcome is recognition or analysis rather than pixel transformation.

Single-Path Workflow

  1. Classify the request:
    • built-in filter chain
    • compositing, masking, scaling, or geometry
    • RAW development
    • custom kernel or processor
    • color, HDR, or alpha repair
    • render destination or interop
    • performance or correctness diagnosis
  2. Apply the Apple docs gate:
    • read current Core Image documentation before proposing implementation changes
    • state the documented behavior relied on
    • apply ../../shared/references/apple-image-type-ownership.md
    • use references/core-image-processing-and-rendering.md for graph, context, color, render, and performance decisions
    • use references/core-image-diagnostics-and-handoffs.md for repair probes and ownership handoffs
  3. Define the graph and ownership:
    • identify the source image, extent, orientation state, color space, alpha semantics, and dynamic range
    • build immutable CIImage transformations and keep mutable CIFilter instances task-local
    • choose one deliberately scoped, reusable CIContext
    • select the output bounds, format, color space, and destination before rendering
  4. Repair common failure modes:
    • treating CIImage as already-rendered pixels
    • creating a new CIContext per frame or filter application
    • sharing mutable CIFilter instances across concurrent work
    • losing orientation, extent, alpha, color-space, HDR, or auxiliary-data meaning during conversion
    • forcing CPU readback between Core Image, Core Video, and Metal without a concrete boundary
    • rendering infinite or unexpectedly expanded extents without an explicit crop
    • using Core Image as a recognition framework instead of handing analysis to Vision
  5. Return one recommendation with:
    • processing class and documented behavior
    • source and output type ownership
    • graph, context, color, extent, and render-destination plan
    • concurrency, cancellation, memory, and performance plan
    • repair findings and runtime validation handoff

Read the full file on GitHub · 100 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 1mo ago First seen · 100 lines · 74 tokens per session scan A 665df2414e2c

Subscribe to this mod's changes

core-image-processing-workflow is a skill published in the GitHub repository gaelic-ghost/socket (7 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 74 tokens to every session and 1,318 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-08-31.

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