using-ssh SKILL.md skillA

using-ssh from tkhq/tk is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add tkhq/tk/using-ssh@git:20261016.fd9d680

Pins git:20261016.fd9d680 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
tkhq/tk
Path
skills/using-ssh/SKILL.md
Versions recorded
5
Latest version
git:20261016.fd9d680, committed Oct 16, 2026
First version recorded
Sep 29, 2026
Size
11,467 bytes
Repository stars
62
License
Apache-2.0

Give an agent SSH access (git over SSH, remote hosts) with a Turnkey-held Ed25519 key served by tk ssh agent, so no private key is on disk. Use to register a key, start the agent, or point git or ssh at the socket; not for commit signing (signing-git-commits).

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

# Using SSH

Result: an agent that authenticates to git hosts and remote machines with an
Ed25519 key that exists only inside Turnkey. `tk ssh agent` answers the
OpenSSH agent protocol on a Unix socket and turns each challenge into a
policy-checked signing activity under the agent's own credential.

Inputs: the root profile (`admin`), the `agent` profile and `AGENT_USER_ID` from
[provisioning-agent-identity](../provisioning-agent-identity/SKILL.md), and the host or git host that will hold the public key.

## Reference

- [ssh](../../docs/ssh-agent.md): `ssh keys`, `ssh public-key`, and `ssh agent` records and default paths.
- [resources](../../docs/resources.md): the `policy create` record that scopes signing to one `private_key.id`.
- [activities](../../docs/activities.md): `activity list` and `policy evaluations` on a failed signing activity.

## Rules

- Root creates the Turnkey private key once with `ssh keys create`, which
  also registers it in root's own registry. The agent host registers the
  same id with `ssh keys add`, which needs nothing but the id. The private
  key never leaves Turnkey and there is nothing to back up on the host.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add tkhq/tk/using-ssh@sha256:38cc5c3f78ee3908

The line at the top of this page pins the label git:20261016.fd9d680, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ptshf4tg2wfyu4eg.svg)](https://markdownregistry.com/a/art_ptshf4tg2wfyu4eg)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Sep 29, 2026 and Oct 16, 2026, about one every 4 days.

versioncommittedcommitsizeaudit
git:20261016.fd9d680 latest2026-10-16 fd9d680 11,467 BA view · diff
git:20261015.1e9acf22026-10-15 1e9acf2 11,406 BA view · diff
git:20260930.97865fa2026-09-30 97865fa 11,403 BA view · diff
git:20260929.a1388c62026-09-29 a1388c6 8,884 BA view · diff
git:20260929.a5145512026-09-29 a514551 8,870 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (11467 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

GitHub

tkhq/tk · 62 stars · license Apache-2.0 · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ptshf4tg2wfyu4eg
GET https://markdownregistry.com/api/v1/resolve?ref=tkhq/tk/using-ssh
GET https://markdownregistry.com/api/v1/blob/38cc5c3f78ee3908e318315da4b422f855fdb61e5cdab731ee736a2dea39a3ea

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.

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