streamling-transform-plugin SKILL.md skillA
streamling-transform-plugin from goldsky-io/streamling is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add goldsky-io/streamling/streamling-transform-plugin@git:20260625.ecf56acPins git:20260625.ecf56ac in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- goldsky-io/streamling
- Path
skills/streamling-transform-plugin/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260625.ecf56ac, committed Jun 25, 2026
- Size
- 9,207 bytes
- Repository stars
- 107
- License
- a license file GitHub does not identify
Use when implementing a streamling TransformPlugin — process_batch with RecordBatch in and RecordBatch out, declaring output_schema, filtering or projecting with Arrow compute (boolean masks, filter_record_batch), handling empty batches, and passing checkpoints through. Use this instead of the built-in sql transform when row logic needs custom Rust or external calls. Assumes streamling-plugin-basics.
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
# streamling transform plugin — Agent Skill
A **transform** sits in the middle of a pipeline: it receives an upstream `RecordBatch`, returns a (possibly reshaped) `RecordBatch`, and propagates checkpoints. Transforms are stateless-by-default row pipelines — use one when the built-in `sql` transform can't express the logic (custom Rust, per-row external calls, non-SQL projections).
**Prerequisite:** [`streamling-plugin-basics`](skill://streamling-plugin-basics) (crate setup, registration, lifecycle, errors).
**When NOT to write a transform:** if the work is column projection/renaming, a `UNION ALL`, or a `JOIN`, the built-in `type: sql` transform (DataFusion) is simpler and faster — see [`sql-transform`](skill://sql-transform). Reach for a plugin transform only when you need imperative Rust or side effects the SQL engine can't do.
## The trait
```rust
#[async_trait]
pub trait TransformPlugin: SupportsGracefulShutdown + Send + Sync {
async fn initialize(&self) -> Result<(), PluginError>;
fn output_schema(&self) -> Result<SchemaRef, PluginError>;
fn labels(&self) -> Vec<PluginLabel> { Vec::new() }
…Read the whole file at its exact version.
How to install
mdr add goldsky-io/streamling/streamling-transform-plugin@sha256:d147e56cb8351dcaThe line at the top of this page pins the label git:20260625.ecf56ac, 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_5dtmwjpjuoetrzt5)
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Versions
The registry has recorded 1 version of this file, committed on Jun 25, 2026.
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 (9207 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
goldsky-io/streamling · 107 stars · license a license file GitHub does not identify · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5dtmwjpjuoetrzt5 GET https://markdownregistry.com/api/v1/resolve?ref=goldsky-io/streamling/streamling-transform-plugin GET https://markdownregistry.com/api/v1/blob/d147e56cb8351dca5c5cb184bb0d2420079717c2390fe2597bfaea8a80747ba5
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.