streamling-plugin-basics SKILL.md skillA
streamling-plugin-basics 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-plugin-basics@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-plugin-basics/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260625.ecf56ac, committed Jun 25, 2026
- Size
- 15,462 bytes
- Repository stars
- 107
- License
- a license file GitHub does not identify
Use when creating a new streamling plugin crate in Rust (source, sink, transform, preprocessor, UDF, or side output), or when wiring up registration macros, constructor contracts, the plugin lifecycle, the async runtime, error types, or option/secret handling. Start here before the type-specific skills.
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 plugin basics — Agent Skill A streamling **plugin** is an independently compiled `cdylib` loaded at runtime via a stable ABI (`abi_stable`). A plugin crate can register any mix of six component kinds: **source**, **transform**, **sink**, **preprocessor**, **UDF**, and **side output**. This skill covers the crate skeleton, registration, the lifecycle every component shares, and the cross-cutting utilities (options, metrics, state, async runtime, errors). For the per-kind trait patterns, see the sibling skills. **Read this first**, then jump to the specific skill: - [`streamling-source-plugin`](skill://streamling-source-plugin) - [`streamling-sink-plugin`](skill://streamling-sink-plugin) - [`streamling-transform-plugin`](skill://streamling-transform-plugin) - [`streamling-udf-plugin`](skill://streamling-udf-plugin) — custom SQL functions (DataFusion UDFs). - [`streamling-advanced-plugins`](skill://streamling-advanced-plugins) — preprocessor, UDF, side output, multi-plugin crate, low-level FFI. ## Crate setup A plugin is a Cargo crate compiled to `cdylib` (+ `rlib` so tests work) that depends on `streamling-plugin`. ```toml # Cargo.toml [package] name = "my_plugins" …
Read the whole file at its exact version.
How to install
mdr add goldsky-io/streamling/streamling-plugin-basics@sha256:790dcb9ee328bb95The 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_3akkqhekupyxexnt)
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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 (15462 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_3akkqhekupyxexnt GET https://markdownregistry.com/api/v1/resolve?ref=goldsky-io/streamling/streamling-plugin-basics GET https://markdownregistry.com/api/v1/blob/790dcb9ee328bb95ef5b35787dedcadd0a13ca051af43cf7212588f454a58be4
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.