xlsx skillA
xlsx is agent-read markdown (skill) from benchflow-ai/benchflow: Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas.
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 benchflow-ai/benchflow/xlsx@git:20260609.91a5353mdr add benchflow-ai/benchflow/xlsx@sha256:9bdc1fee81f3be9cPin 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_zr7vsx7a4pdzkqlf)
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Versions
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 (10631 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
benchflow-ai/benchflow · 349 stars · license Apache-2.0 · pushed 2026-09-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zr7vsx7a4pdzkqlf GET https://markdownregistry.com/api/v1/resolve?ref=benchflow-ai/benchflow/xlsx GET https://markdownregistry.com/api/v1/blob/9bdc1fee81f3be9cb34ac49f8890c094a3855d3d0236783d10e0ea6df1515e01
Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.