sign-artifact SKILL.md skillA
sign-artifact from harness/harness-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add harness/harness-skills/sign-artifact@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- harness/harness-skills
- Path
skills/security/sign-artifact/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Oct 14, 2026
- Size
- 18,707 bytes
- Repository stars
- 122
- License
- Apache-2.0
Add an Artifact Signing (SscaArtifactSigning) step to an existing Harness pipeline to Cosign-sign container or local-stage artifacts with keyless, key-based, or Vault signing. Supports Third-Party registries (Docker, ECR, GCR, GAR, ACR), Harness Artifact Registry (HAR), and Harness Local Stage artifacts. Place after image build/push; optionally upload .sig to the registry. Only works with existing pipelines. Use when asked to sign artifacts, add artifact signing, Cosign sign image, attach…
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
# Sign Artifact Add an **Artifact Signing** (`SscaArtifactSigning`) step to an existing Harness pipeline. The step retrieves an artifact from a registry or local workspace, signs it with Cosign, and optionally pushes the `.sig` signature file back to the registry. This skill only works with **existing pipelines** — do not create standalone signing-only pipelines. **Prerequisites:** Container images must be built and pushed (or available in registry) before signing. Key-based signing requires Cosign key pair file secrets (`/create-secret`). Harness docs note that **Deploy-stage signing is not yet supported** — prefer CI or Security stages. Guide the user through a **step-by-step interactive wizard** (same UX as `/verify-sign`): - Wizard: `references/interactive-wizard-flow.md` - UI ↔ YAML: `references/artifact-signing-step.md` - CD note: `references/cd-containerized-step-group.md` --- ## Interaction model (mandatory) 1. **One question per turn** — use `AskQuestion` when available; otherwise numbered options with `(Recommended)`. 2. **Opening message** — add Artifact Signing after build/push; mention keyless, key-based, Vault, and HAR. …
Read the whole file at its exact version.
How to install
mdr add harness/harness-skills/sign-artifact@sha256:8eace1c6c9faffdeThe line at the top of this page pins the label v1.0.0, 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.
[](https://markdownregistry.com/a/art_o7bxl2ts6xshqimu)
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Versions
The registry has recorded 1 version of this file, committed on Oct 14, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (18707 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
harness/harness-skills · 122 stars · license Apache-2.0 · pushed 2026-10-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_o7bxl2ts6xshqimu GET https://markdownregistry.com/api/v1/resolve?ref=harness/harness-skills/sign-artifact GET https://markdownregistry.com/api/v1/blob/8eace1c6c9faffde35816f0d581eb8e68df782d3d66d64a923a159b99da0d49b
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.