winback-engine skillA
winback-engine is agent-read markdown (skill) from cognyai/claude-code-marketing-skills: Find dormant subscribers, segment by historical value, draft personalized winback emails per tier, and identify suppression candidates.
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
How to install
mdr add cognyai/claude-code-marketing-skills/winback-engine@v1.0.0mdr add cognyai/claude-code-marketing-skills/winback-engine@sha256:5639b077c94500e7Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_jwbh4yfb5tobelzs)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-04-22 | 195609e | 6,907 B | A | view · diff |
| v1.0.0 | 2026-04-22 | 77a7b2e | 9,486 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 (6907 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
cognyai/claude-code-marketing-skills · 102 stars · license none · pushed 2026-06-16 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jwbh4yfb5tobelzs GET https://markdownregistry.com/api/v1/resolve?ref=cognyai/claude-code-marketing-skills/winback-engine GET https://markdownregistry.com/api/v1/blob/5639b077c94500e7bd38b4483a2a6df4bf7b025714d3781e5a127a6d67fb4fae
Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.