agentleFS
DataWithBaraaDataWithBaraa/claude-code-data-engineering-skills/skills/profile/SKILL.md

profile

Skill84 starsChanged 13 days agoMITView on GitHub

Use when a new source or new files arrive, to profile them before any data contract or pipeline code is written, the file formats, the schema, the data quality, the bad records, the relationships, the gaps and the personal data.

29 other projects use a version of this.

Adopted by

Most recently taken up by

Used with

Projects with it also use apply, coverage and 4 more.

Other files people use alongside this one.

Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
  • proficientlyjobsSkill

    apply

    Fill out a job application on Greenhouse, Lever, or Workday

    Also in 3 projects that use this

  • PydanticSkill

    coverage

    Fetch coverage diff from Codecov for the current branch or a specific PR. Shows uncovered lines, patch coverage, and overall coverage change.

    Also in 3 projects that use this

  • dragonflydbSkill

    benchmark

    Benchmark Dragonfly (and compare against Valkey/Redis) on local or remote cloud instances, then produce a performance + memory report with charts and a raw-data appendix. Use this whenever the user runs /benchmark, or asks to benchmark / load-test / measure throughput, QPS, latency, or memory efficiency of Dragonfly or another Redis-compatible server, to compare Dragonfly vs Valkey or Redis, or to generate a benchmark report. Trigger it even when the user just describes the goal ("see how fast Dragonfly is on this box", "compare memory per key vs Valkey") without saying the word "benchmark".

    Also in 3 projects that use this

  • AnthropicSkill

    status

    Case status summary by audience — client-facing (plain language), internal (for the professor), or court-ready (formal caption format per local rules). Same facts, different framing and depth. Use when a student needs to update the client, brief the professor, or prepare a court status report.

    Also in 3 projects that use this

  • VercelSkill

    setup

    Set up Vercel CLI and project configuration. Use when the user says "set up Vercel", "configure Vercel", "link to Vercel", or "vercel init".

    Also in 3 projects that use this

  • GoogleSkill

    tdd

    Test-driven development. Use when the user wants to build features or fix bugs test-first, mentions "red-green-refactor", or wants integration tests.

    Also in 3 projects that use this

The file

We split this skill into the rules it gives an agent

4 rules. 0 are common, 4 are distinctive, and 0 are very specific to this project.

  • 0

    Common

    Most of the 23 edited versions we read keep these.

  • 4

    Distinctive

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Run a profiler on what arrived, with scripts that count.

    line 15
  2. Distinctive:

    Never changes a file of the project.

    line 41
  3. Distinctive:

    Never guesses a format: a format is what the values show.

    line 42
  4. Distinctive:

    Never shows personal data unmasked.

    line 43

“Common” is measured: kept by at least 6 in 10 of the 23 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Profile

The job: understand new data before anything is built on it. It writes nothing but the report.

Input: the folder of the new source, a feed file, or a table.

Steps

  1. Run a profiler on what arrived, with scripts that count. Never guess a number.
  2. File format: delimiter, quoting, encoding, null tokens, decimal separators, date and timestamp formats.
  3. Schema: tables, columns, data types, row counts, and the schema drift between the files.
  4. Data quality: null values, empty columns, constant columns, duplicate rows, and the uniqueness of the primary key.
  5. Bad records: corrupt records, outliers, values out of range, and placeholder values such as 9999-12-31.
  6. Relationships: for every foreign key, the orphans, the child rows whose parent is not in the delivery.
  7. Gaps and deletes: business days without rows, tables that never change, and how the source marks a deleted row.
  8. Personal data: the columns that hold personal or bank data, with their values masked on the page.
  9. Compare with the metadata, if there is one: columns the metadata does not know, and columns that did not arrive.
  10. Rank the findings, each with the rows it affects and the decision it needs, marked for the data contract or for the pipeline.
  11. Give the result as one web page, with the input for the data contract and the pipeline at the end.

Output

One HTML file, like references/profile.html: the numbers on top, one section per check with a chart or a table, the findings ranked, and the input for the contract and the pipeline last. Read it for the layout before you write the page.

Reads

  • the files or tables, read-only, and the metadata if there is one

Writes

  • the web page only

Never

  • Never changes a file of the project.
  • Never guesses a format: a format is what the values show.
  • Never shows personal data unmasked.

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