cf:xlsx skillA
cf:xlsx is agent-read markdown (skill) from haposoft/cafekit: Create, edit, analyze spreadsheets (.xlsx, .csv, .tsv). Use for Excel formulas, data analysis, visualization, formatting, pivot tables, charts, formula recalculation..
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 haposoft/cafekit/cf:xlsx@v1.0.0mdr add haposoft/cafekit/cf:xlsx@sha256:33c01a68a44418e6Pin 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_dng5so3x5nqvcgyt)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-09-03 | f55ff96 | 10,598 B | A | view · diff |
| v1.0.0 | 2026-07-17 | cb05ace | 10,600 B | A | view · diff |
| v1.0.0 | 2026-06-03 | fab9b6a | 10,568 B | A | view · diff |
| v1.0.0 | 2026-04-13 | 29e4301 | 10,404 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 (10598 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
haposoft/cafekit · 54 stars · license none · pushed 2026-09-16 · branch dev
API
GET https://markdownregistry.com/api/v1/artifacts/art_dng5so3x5nqvcgyt GET https://markdownregistry.com/api/v1/resolve?ref=haposoft/cafekit/cf:xlsx GET https://markdownregistry.com/api/v1/blob/33c01a68a44418e67fd85b6df0d1dc62ac545f366ce99f62dd76debb7a016c2c
Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.