artifact-signing

Automate artifact signing and provenance verification with Sigstore and Cosign.

Updated Mar 29, 2026
One-click install
npx skills add https://github.com/marquesfelip/agents-and-skills --skill artifact-signing
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: artifact-signing
Source: https://github.com/marquesfelip/agents-and-skills/tree/main/skills/artifact-signing
Command: npx skills add https://github.com/marquesfelip/agents-and-skills --skill artifact-signing

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Artifact signing and provenance verification streamline software supply chain security by ensuring the integrity and traceability of builds and releases.

Core Features & Use Cases

  • Key signing workflows for containers, binaries, and release artifacts using Cosign, Sigstore, and Notation.
  • SLSA provenance generation and verification to provide build authenticity.
  • Deployment-time enforcement of signature verification in Kubernetes, admission controllers, and CI pipelines.

Quick Start

Sign your first release artifact by enabling keyless Cosign signing and Rekor attestation in the CI workflow.

Frequently Asked Questions about artifact-signing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I automate artifact signing in a CI/CD pipeline?

You can automate artifact signing in a CI/CD pipeline by enabling keyless Cosign signing and Rekor attestation within your release workflows. This process ensures container, binary, and release artifact integrity from build to deployment.

What is SLSA provenance and how does it secure software supply chains?

SLSA provenance secures software supply chains by generating verifiable metadata that establishes build authenticity and traceability. It ensures containers and binaries originate from trusted, unaltered build processes before deployment.

Does Cosign work with Kubernetes admission controllers for deployment enforcement?

Yes, Cosign works with Kubernetes admission controllers to enforce signature verification at deployment time. This Skill supports configuring deployment-time controls in Kubernetes and CI pipelines to verify checksums, attestations, and signatures before allowing releases.

Can I use keyless Sigstore signing for container images and binaries?

Yes, you can use keyless Sigstore signing for container images and binaries. This Skill supports keyless signing workflows with Sigstore and Cosign, eliminating private key management while generating verifiable Rekor attestations for artifacts.

What's the best way to verify artifact provenance at runtime?

The best way to verify artifact provenance at runtime is through deployment-time enforcement controls, including checksums and attestation verification. This Skill applies runtime verification in Kubernetes admission controllers and CI pipelines to block unauthorized releases.

When do I need artifact signing and provenance verification?

You need artifact signing and provenance verification when securing software supply chains from build to deployment. It is essential for CI/CD pipelines and release workflows handling containers, binaries, and release artifacts to ensure integrity and prevent tampering.