estuary/agent-skills · skills/derivation-flatten-array/SKILL.md

derivation-flatten-array skillA

derivation-flatten-array is agent-read markdown (skill) from estuary/agent-skills: Create an Estuary derivation that flattens a nested array into one output document per array element. Use for normalising nested JSON, exploding line items, unpacking tags, or producing one-row-per-item tables from arrays. Derivations add complexity and cost — confirm the user wants a derivation before reaching for this (some destinations can `UNNEST` server-side without one). Use when user says "flatten-array derivation", "derivation to explode an array", "transformation to unnest", "derive one.

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

Latest version
mdr add estuary/agent-skills/derivation-flatten-array@git:20260707.6b608bf
Exact content
mdr add estuary/agent-skills/derivation-flatten-array@sha256:7b8d1af9d549b297

Pin 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_o2j5hkd56fwhw5bf.svg)](https://markdownregistry.com/a/art_o2j5hkd56fwhw5bf)

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Versions

versioncommittedcommitsizeaudit
git:20260707.6b608bf latest2026-07-07 6b608bf 11,148 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (11148 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

estuary/agent-skills · 7 stars · license Apache-2.0 · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_o2j5hkd56fwhw5bf
GET https://markdownregistry.com/api/v1/resolve?ref=estuary/agent-skills/derivation-flatten-array
GET https://markdownregistry.com/api/v1/blob/7b8d1af9d549b297d7a2866415bbf7a9e9f1e644e652d26f64954d475c201e11

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.