deploying-signing-broker SKILL.md skillA
deploying-signing-broker from tkhq/tk is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tkhq/tk/deploying-signing-broker@git:20261016.d480744Pins git:20261016.d480744 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tkhq/tk
- Path
skills/deploying-signing-broker/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261016.d480744, committed Oct 16, 2026
- First version recorded
- Sep 22, 2026
- Size
- 11,213 bytes
- Repository stars
- 62
- License
- Apache-2.0
Deploy a credential-free application beside a single-key, GPG-only tk signing broker and a separate session provisioner, each in its own isolation boundary. Use when isolating OpenPGP Git signing so the application receives only a constrained Unix socket and public key, or when rotating the broker's expiring Turnkey credential; not for creating the signing key or choosing policies.
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
# Deploying a signing broker Result: three isolation boundaries with separate authority. The application requests signatures from one OpenPGP key through a Unix socket; the broker alone holds that key's profile; the provisioner renews the broker's key but cannot sign. This skill is GPG only. SSH through a broker runs [using-ssh](../using-ssh/SKILL.md) as the broker principal; its broker rule lists the substitutions. ## Reference - [GPG signing](../../docs/gpg-signing.md): key registration and export, the foreground agent, and the client socket. - [git-signing](../../docs/git-signing.md): the Git configuration that points commit signing at `tk` as its GPG program. - [resources](../../docs/resources.md): the `policy create` record. - [sessions](../../docs/sessions.md): the request, provision, activate, and status records. ## Rules - Three principals: application, GPG broker, provisioner. Separation means one boundary (a container, VM, sandbox, or OS user), one `HOME`, one process tree, and one set of mounts per principal. Separate OS users are the default; under the shared-uid socket model the application and broker share a numeric uid and …
Read the whole file at its exact version.
How to install
mdr add tkhq/tk/deploying-signing-broker@sha256:9c9ceec86fdeaecfThe line at the top of this page pins the label git:20261016.d480744, 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_dn3iuipgok3xkvax)
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Versions
The registry has recorded 5 versions of this file, between Sep 22, 2026 and Oct 16, 2026, about one every 6 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261016.d480744 latest | 2026-10-16 | d480744 | 11,213 B | A | view · diff |
| git:20261016.fd9d680 | 2026-10-16 | fd9d680 | 11,134 B | A | view · diff |
| git:20260930.8ac73e7 | 2026-09-30 | 8ac73e7 | 11,143 B | A | view · diff |
| git:20260929.a514551 | 2026-09-29 | a514551 | 11,128 B | A | view · diff |
| git:20260922.c713b9a | 2026-09-22 | c713b9a | 11,045 B | A | view |
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 (11213 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
tkhq/tk · 62 stars · license Apache-2.0 · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dn3iuipgok3xkvax GET https://markdownregistry.com/api/v1/resolve?ref=tkhq/tk/deploying-signing-broker GET https://markdownregistry.com/api/v1/blob/9c9ceec86fdeaecff0e1894c65c59c5d801b91e12989beba7d02899f845c9ba8
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.