sealed-secrets SKILL.md skillA
sealed-secrets from ashfulcra/fulcra-tools is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ashfulcra/fulcra-tools/sealed-secrets@git:20260819.19ffe0cPins git:20260819.19ffe0c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ashfulcra/fulcra-tools
- Path
skills/sealed-secrets/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260819.19ffe0c, committed Aug 19, 2026
- Size
- 26,062 bytes
- Repository stars
- 10
- License
- MIT
Use when an agent or role needs credentials on a machine that does not have them — a fresh container, a rebuilt host, a successor session — or when sealing, rotating, or verifying secrets kept in a shared object store.
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
# Sealed Secrets **A successor session on a fresh machine must be able to recover the role's credentials — and must never be told a revoked one is fine.** Agents lose their machines. Containers get reclaimed, hosts are rebuilt from snapshots, a session resumes tomorrow on hardware that has never seen your config. Everything else an agent needs can live in a shared object store. Its credentials cannot — not in the clear, because the store is readable by every agent on the team and by whoever operates it. So seal them. The store carries ciphertext; the operator carries one passphrase; the successor runs one command and learns, per secret, whether it **actually works**. > **A decrypt that succeeds is not a credential that authenticates.** That sentence is the whole design. A bundle that decrypts perfectly to a revoked token passes every cryptographic check and still leaves the successor dead. ## Where to start — the re-entrancy probes Run in order; enter at the **first probe that fails**. Every state below is safe to re-enter: sealing is a new bundle version, unlocking is read-only, and verifying makes no writes at all. …
Read the whole file at its exact version.
How to install
mdr add ashfulcra/fulcra-tools/sealed-secrets@sha256:6295e33154eb3b11The line at the top of this page pins the label git:20260819.19ffe0c, 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_eklscvooung75bjh)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 19, 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 (26062 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
ashfulcra/fulcra-tools · 10 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_eklscvooung75bjh GET https://markdownregistry.com/api/v1/resolve?ref=ashfulcra/fulcra-tools/sealed-secrets GET https://markdownregistry.com/api/v1/blob/6295e33154eb3b11f7ddc2f9972f5a8b182eed5110f0cf9b1fadd403232b433b
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.