lance-format SKILL.md skillA

lance-format from tenequm/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add tenequm/skills/lance-format@v0.21.1

Pins v0.21.1 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
tenequm/skills
Path
skills/lance-format/SKILL.md
Versions recorded
8
Latest version
v0.21.1, committed Oct 13, 2026
First version recorded
Aug 21, 2026
Size
26,915 bytes
Repository stars
39
License
MIT

Deep reference for Lance v14 columnar format, its Rust crates, and pylance - file encodings, table format, indexes, schema evolution, time travel. Use when building on the Lance crates or reading .lance datasets, not the LanceDB product.

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

# Lance v14 reference

Lance is an open columnar format for multimodal AI - "a columnar data format that is 100x
faster than Parquet for random access." It is not one format but a stack of interoperating
specs: a **file format**, a **table format**, **index formats**, **catalog specs**, and a
**namespace client spec**. The Rust workspace at `lance-format/lance` implements all of them
plus Python (`pylance`) and Java bindings.

This skill tracks **`v14.0.0-beta.14`** (the `lance-format/lance` git tag), the current
development frontier; **`v13.0.0`** is the stable pin, released 2026-10-07. Pin against tags, not
`main` - Lance ships beta tags every few days and `next`-format encodings can change. Version
landscape below.

Three layers of reference, load what the task needs:

- **The deep reference** - any concrete schema, parameter, proto, or constraint. Split by topic:

  | File in `references/` | Covers | Sections |
  |------|--------|----------|
  | `format-file.md` | What Lance is, the 27 crates, file format, data types | 1-4 |
  | `format-table.md` | Dataset layout, manifests, fragments, schema evolution, versioning/tags/branches, row IDs, transactions + OCC, MemWAL | 5-10 |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add tenequm/skills/lance-format@sha256:13adb24dae98adf5

The line at the top of this page pins the label v0.21.1, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_3mlyfha36rcso5fx.svg)](https://markdownregistry.com/a/art_3mlyfha36rcso5fx)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 8 versions of this file, between Aug 21, 2026 and Oct 13, 2026, about one every 8 days.

versioncommittedcommitsizeaudit
v0.21.1 latest2026-10-13 815a39e 26,915 BA view · diff
v0.21.02026-10-13 25dd84f 26,915 BA view · diff
v0.20.02026-09-17 e6f1911 35,903 BA view · diff
v0.19.02026-09-09 0a72d33 27,095 BA view · diff
v0.18.12026-09-09 532dedd 24,740 BA view · diff
v0.18.02026-09-01 1593317 25,038 BA view · diff
v0.17.12026-08-21 b16c242 18,505 BA view · diff
v0.17.02026-08-21 50a7fa2 18,396 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (26915 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

GitHub

tenequm/skills · 39 stars · license MIT · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_3mlyfha36rcso5fx
GET https://markdownregistry.com/api/v1/resolve?ref=tenequm/skills/lance-format
GET https://markdownregistry.com/api/v1/blob/13adb24dae98adf5fbbb8426d86f6fffc0946ca7fc86bf9c6075a615880c9934

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.

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