os-control-signing-setup SKILL.md skillA
os-control-signing-setup from richfrem/agent-plugins-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add richfrem/agent-plugins-skills/os-control-signing-setup@git:20261015.fe76d7ePins git:20261015.fe76d7e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- richfrem/agent-plugins-skills
- Path
plugins/agent-agentic-os/skills/os-control-signing-setup/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261015.fe76d7e, committed Oct 15, 2026
- Size
- 2,710 bytes
- Repository stars
- 7
- License
- MIT
Guide a human through creating the SSH signing key that authorizes the human approval gates (plan approval, code acceptance, closure): passphrase-protected key or FIDO hardware key, the allowed_signers files, the isolation status, and the interactive signing self-test, on macOS or Windows. Trigger with "set up my approval key", "create the ssh signing key", "set up signing identity", "HUMAN_PROOF_REQUIRED", "test my signing key". Never used to record decisions or advance tasks.
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
# OS Signing Setup (`os-control-signing-setup`) Guides human operators through creating and verifying passphrase-protected or FIDO hardware SSH signing keys required for cryptographic approval gates (`APPROVED`, `VERIFY_EXIT`, `DONE`). ## Contents - [Critical Constraints](#critical-constraints) - [Quick start](#quick-start) - [Workflow](#workflow) - [Verification](#verification) - [References](#references) ## Critical Constraints 1. **Never Run Setup Autonomously**: Key creation and self-tests require interactive human terminal prompts; agents must never run them directly. 2. **Never Touch Private Keys**: Never create, read, copy, or move private keys, and never edit `allowed_signers*`. 3. **No Automated Approvals**: Never pipe passphrases or fabricate signatures; signatures are proof of actual human presence. ## Quick start Check signing status and key readiness: ```bash python3 scripts/setup_ciba_identity.py --check ``` ## Workflow 1. **Check Status**: Run status check to verify whether trust anchors or keys are missing. 2. **Guide Key Creation**: Provide instructions for the human to run `python3 scripts/setup_ciba_identity.py` in their own terminal. …
Read the whole file at its exact version.
How to install
mdr add richfrem/agent-plugins-skills/os-control-signing-setup@sha256:0310b0e606e7b4c8The line at the top of this page pins the label git:20261015.fe76d7e, 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_zti34xblipx2lwnv)
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Versions
The registry has recorded 1 version of this file, committed on Oct 15, 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 (2710 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
richfrem/agent-plugins-skills · 7 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zti34xblipx2lwnv GET https://markdownregistry.com/api/v1/resolve?ref=richfrem/agent-plugins-skills/os-control-signing-setup GET https://markdownregistry.com/api/v1/blob/0310b0e606e7b4c89f9b103bfbc189509cd3848e4a77885e2a58d4d18985260c
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.