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c2pa-sign SKILL.md skillA

This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.

c2pa-sign from indranilbanerjee/neels-plugins is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add indranilbanerjee/neels-plugins/c2pa-sign@git:20261011.8ca557b

Pins git:20261011.8ca557b in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: indranilbanerjee/neels-plugins
Path: hermes/digital-marketing-pro/social/skills/c2pa-sign/SKILL.md
Versions recorded: 2
Latest version: git:20261011.8ca557b, committed Oct 11, 2026
First version recorded: Oct 11, 2026
Size: 8,979 bytes
Repository stars: 6
License: MIT

Embed C2PA content credentials and an AI-disclosure record in AI-generated assets. "sign these images for AI disclosure".

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# /socialforge:c2pa-sign — Embed Content Authenticity Provenance

> **Script location.** If your host does not set `${CLAUDE_PLUGIN_ROOT}`, the scripts are in this plugin's `scripts/` folder, next to `skills/`. Run them with Python 3.10 or newer: `python`, or `python3` where `python` is not found (macOS, many Linux systems).

## Purpose

## Context efficiency

Asset-heavy skill. **Grep before Read** the asset catalog (`${CLAUDE_PLUGIN_DATA}/socialforge/brands/<brand>/asset-index.json`) — never list the asset directory. Reference generated images / videos by path, not by loading metadata. Brand profile loads once per session.

Wraps `scripts/c2pa_sign.py` to add a **C2PA manifest** to any SocialForge-generated marketing asset. The manifest carries:

- Machine-readable provenance trail (brand, generator name, timestamp, prompt, target platform)
- IPTC digital-source-type vocabulary tag (`TRAINED_ALGORITHMIC_MEDIA` / `COMPOSITE_WITH_TRAINED_ALGORITHMIC_MEDIA` / `HUMAN_EDITS`)
- schema.org CreativeWork assertion (author = brand organization, dateCreated, publishingPrinciples = target platform)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add indranilbanerjee/neels-plugins/c2pa-sign@sha256:60b84f74c435d539

The line at the top of this page pins the label git:20261011.8ca557b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_62pwar3rjheqflxk.svg)](https://markdownregistry.com/a/art_62pwar3rjheqflxk)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, all committed on Oct 11, 2026.

version	committed	commit	size	audit
git:20261011.8ca557b latest	2026-10-11	8ca557b	8,979 B	A	view · diff
git:20261011.82fab54	2026-10-11	82fab54	8,693 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (8979 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

indranilbanerjee/neels-plugins · 6 stars · license MIT · pushed 2026-10-17 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_62pwar3rjheqflxk
GET https://markdownregistry.com/api/v1/resolve?ref=indranilbanerjee/neels-plugins/c2pa-sign
GET https://markdownregistry.com/api/v1/blob/60b84f74c435d539a3b71ec1ed4ee634907531d238e197efd326ddedfd767f3d

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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