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cost-review SKILL.md skillA

cost-review from datawithbaraa/claude-code-data-engineering-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add datawithbaraa/claude-code-data-engineering-skills/cost-review@git:20261029.2e2b6c2

Pins git:20261029.2e2b6c2 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: datawithbaraa/claude-code-data-engineering-skills
Path: skills/cost-review/SKILL.md
Versions recorded: 1
Latest version: git:20261029.2e2b6c2, committed Oct 29, 2026
Size: 1,470 bytes
Repository stars: 81
License: MIT

Use for the monthly cost review of the platform, to see where the compute and the storage money goes, per job, pipeline and table, and what to cut.

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

# Cost review

The job: where the money goes, per job, per pipeline and per table, and what to do about it. It proposes, it stops and deletes nothing.

Input: the period, the last month by default.

## Steps

1. Read the billing and usage records of the period: compute per job and pipeline, storage per table.
2. The top 10 jobs by cost, and what each one produces.
3. The cost per run of each scheduled pipeline, against the previous period.
4. The storage bill: what the storage costs per month, and the part spent on tables nobody reads. The list of those tables comes from the big-review skill.
5. Idle spend: clusters and warehouses that ran with nothing to do, and jobs that ran for nobody.
6. The spikes: which day, which job, and which change caused it.
7. Proposals, each with the saving per month and the risk, in order of the saving.
8. Give the result as one web page.

## Output

One HTML file: the cost of the period on top, the top jobs, the cost per run, the storage bill, the idle spend, the spikes, and the proposals last.

## Reads

- the billing and usage records, the run records, the query logs, the catalog

## Writes

- the web page only

## Never
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add datawithbaraa/claude-code-data-engineering-skills/cost-review@sha256:14f6da12e6c8cb5a

The line at the top of this page pins the label git:20261029.2e2b6c2, 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](https://markdownregistry.com/badge/art_uq63yet6zdeb2ibr.svg)](https://markdownregistry.com/a/art_uq63yet6zdeb2ibr)

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

Versions

The registry has recorded 1 version of this file, committed on Oct 29, 2026.

version	committed	commit	size	audit
git:20261029.2e2b6c2 latest	2026-10-29	2e2b6c2	1,470 B	A	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 (1470 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

datawithbaraa/claude-code-data-engineering-skills · 81 stars · license MIT · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_uq63yet6zdeb2ibr
GET https://markdownregistry.com/api/v1/resolve?ref=datawithbaraa/claude-code-data-engineering-skills/cost-review
GET https://markdownregistry.com/api/v1/blob/14f6da12e6c8cb5ad1eb39e3e39d2563f2ca3bbb7b2d4db68f363e7d0a206745

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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