# Cosign

> Use this skill when the user wants to container signing, verification and storage in an oci registry.

- Skill: `javimosch/cosign` (Agent Skill)
- Install (CLI): `npx skillmds@latest add javimosch/cosign`
- Raw SKILL.md: https://api.skillmd.com/api/skills/javimosch/cosign/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: javimosch (https://skillmd.com/u/javimosch)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/javimosch/cosign

---


# Cosign Plugin

Container Signing, Verification and Storage in an OCI registry.

## Commands

### Operations
- `cosign image sign` — sign image via cosign
- `cosign image verify` — verify image via cosign
- `cosign image attest` — attest image via cosign

## Usage Examples
- "cosign --help"
- "cosign <args>"

## Installation

```bash
brew install cosign
```

## Examples

```bash
cosign --version
cosign --help
```

## Key Features
- security\n- signing\n- containers