---
title: "Sigstore Cosign Container Verifier"
description: "Verifies container image signatures and provenance using Sigstore Cosign and Rekor transparency log. Enforces supply chain policies with OPA Gatekeeper admission rules."
verification: "security_reviewed"
source: "https://github.com/sigstore/cosign"
author: "sigstore"
category:
  - "Security & Verification"
framework:
  - "MCP"
tool_ecosystem:
  github_repo: "sigstore/cosign"
  github_stars: 5830
---

# Sigstore Cosign Container Verifier

Verifies container image signatures and provenance using Sigstore Cosign and Rekor transparency log. Enforces supply chain policies with OPA Gatekeeper admission rules.

## Installation

Choose whichever fits your setup:

1. Copy this skill folder into your local skills directory.
2. Clone the repo and symlink or copy the skill into your agent workspace.
3. Add the repo as a git submodule if you manage shared skills centrally.
4. Install it through your internal provisioning or packaging workflow.
5. Download the folder directly from GitHub and place it in your skills collection.

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/sigstore-cosign-container-verifier/)