arrow-columnar SKILL.md skillA
arrow-columnar from sparq-org/sparq is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add sparq-org/sparq/arrow-columnar@git:20261009.f0b870dPins git:20261009.f0b870d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- sparq-org/sparq
- Path
skills/arrow-columnar/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261009.f0b870d, committed Oct 9, 2026
- First version recorded
- Jul 12, 2026
- Size
- 6,274 bytes
- Repository stars
- 13
- License
- MIT
Export and import sparq SPARQL SELECT QueryResult values through Apache Arrow RecordBatch, in-memory Parquet bytes, Arrow IPC stream bytes, or flattened CSV bytes with the opt-in sparq-arrow crate. Use when moving query results into dataframe, analytics, transport, or storage tooling while preserving RDF term kinds, datatype and language metadata, RDF 1.2 triple terms, empty literals, and unbound cells.
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
# sparq-arrow — Arrow, Parquet, IPC, and CSV interop Use `sparq-arrow` when a Rust application needs a faithful columnar representation of a `sparq_engine::QueryResult`. The crate maps every SELECT variable to one nullable Arrow `Struct` column with five nullable UTF-8 children: `kind`, `value`, `datatype`, `language`, and `direction`. ## Choose a feature - Enable `arrow` for `to_record_batch`, `from_record_batch`, `term_schema`, and `term_struct_type`. - Enable `parquet` for `to_parquet_bytes`, `from_parquet_bytes`, `parquet_variables_from_bytes`, and `parquet_row_count_from_bytes`; it implies `arrow`. - Enable `ipc` for `to_ipc_bytes`, `from_ipc_bytes`, and `ipc_variables_from_bytes`; it implies `arrow`. - Enable `csv` for `to_csv_bytes`, `from_csv_bytes`, and `csv_variables_from_bytes`; it implies `arrow` and adds no further dependencies (the RFC 4180 serializer and parser are hand-rolled over `std`). - Leave all features disabled to retain only the dependency-free field-name constants. All features are default-OFF. The crate is `publish = false` (take it from git, not crates.io) and a leaf capability crate, so no Arrow …
Read the whole file at its exact version.
How to install
mdr add sparq-org/sparq/arrow-columnar@sha256:285559eb394b221fThe line at the top of this page pins the label git:20261009.f0b870d, 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_i2eap77nfumgkx5u)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Jul 12, 2026 and Oct 9, 2026, about one every 18 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261009.f0b870d latest | 2026-10-09 | f0b870d | 6,274 B | A | view · diff |
| git:20260716.d8056a6 | 2026-07-16 | d8056a6 | 5,831 B | A | view · diff |
| git:20260713.308392e | 2026-07-13 | 308392e | 4,345 B | A | view · diff |
| git:20260713.ae3b29d | 2026-07-13 | ae3b29d | 4,075 B | A | view · diff |
| git:20260712.1fa897c | 2026-07-12 | 1fa897c | 3,631 B | A | view · diff |
| git:20260712.6ac4789 | 2026-07-12 | 6ac4789 | 3,022 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 (6274 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
sparq-org/sparq · 13 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_i2eap77nfumgkx5u GET https://markdownregistry.com/api/v1/resolve?ref=sparq-org/sparq/arrow-columnar GET https://markdownregistry.com/api/v1/blob/285559eb394b221f2efaa77458e56e4f2a7bd6d60ca90c240f14645ac77bfce6
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.