validating-in-reality SKILL.md skillA

This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.

validating-in-reality from cristhianzl/claude-skills-czl is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add cristhianzl/claude-skills-czl/validating-in-reality@git:20260806.29b92b9

Pins git:20260806.29b92b9 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
cristhianzl/claude-skills-czl
Path
configs/langflow/skills/validating-in-reality/SKILL.md
Versions recorded
1
Latest version
git:20260806.29b92b9, committed Aug 6, 2026
Size
4,273 bytes
Repository stars
5
License
MIT

Validate a bugfix or feature against the REAL running system — execute the user's cURL, assert actual responses, check persisted database state, and drive the UI end-to-end — instead of assuming the code change works. Use whenever the user provides a cURL command, a localhost/endpoint URL, or asks to "validate", "test it for real", "check the database", "no assumptions", or when finishing a bugfix/feature in a project with a running server. The user's cURL IS the acceptance test. Not a…

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

# Validating in reality

A change isn't done because the code looks right — it's done when the **running system proves it**. This skill turns a user-provided cURL (or endpoint, or repro) into the acceptance test, and replaces "should work" with pasted evidence.

## Read first (always)

List `learnings/` and read anything relevant — how this project starts its server, seeds data, connects to the DB, and authenticates test requests lives there and overrides the defaults here.

## The principle: evidence over inference

Reading the diff tells you what the code *should* do. Only the running system tells you what it *does*. When the user supplies a cURL, an endpoint, or a repro, that artifact is the **definition of done** — the task is complete when it behaves correctly against the live system, and you have the output to show it.

## Workflow

1. **Confirm the system is running.** Find the server (the project's run command, `docker compose ps`, the port in the cURL). If nothing is running and you can't start it with the project's documented command, **say so explicitly and stop** — never simulate a validation you didn't run.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add cristhianzl/claude-skills-czl/validating-in-reality@sha256:63fb1616ce661611

The line at the top of this page pins the label git:20260806.29b92b9, 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 badge

[![mdr](https://markdownregistry.com/badge/art_qrztumt3wurryjhz.svg)](https://markdownregistry.com/a/art_qrztumt3wurryjhz)

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

Versions

The registry has recorded 1 version of this file, committed on Aug 6, 2026.

versioncommittedcommitsizeaudit
git:20260806.29b92b9 latest2026-08-06 29b92b9 4,273 BA 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 (4273 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

cristhianzl/claude-skills-czl · 5 stars · license MIT · pushed 2026-11-03 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_qrztumt3wurryjhz
GET https://markdownregistry.com/api/v1/resolve?ref=cristhianzl/claude-skills-czl/validating-in-reality
GET https://markdownregistry.com/api/v1/blob/63fb1616ce66161185ea1f9660a04255e52be39fe592efcf1e209cda39a55aeb

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.

More from cristhianzl/claude-skills-czl

CLAUDE.md@configs/agnostic CLAUDE.md file
cristhianzl/claude-skills-czl · configs/agnostic/CLAUDE.md
git:20260923.1ab9adb · audit A · 5 stars
api-design SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/api-design/SKILL.md · Design and review HTTP/REST (and choose between REST/GraphQL/gRPC) APIs that are contract-first, resource-oriented…
git:20260619.98096d2 · audit A · 5 stars
building-frontend-ui SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/building-frontend-ui/SKILL.md · Build, refactor, and review frontend UI in any framework — components, accessibility, forms, client state and data…
git:20261103.fc0d42c · audit A · 5 stars
debugging-agent-runs SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/debugging-agent-runs/SKILL.md · Recover when the AGENT itself is stuck — looping, repeating the same failed action, burning tokens/budget, overflowing…
git:20260625.6520aec · audit A · 5 stars
developing-features-tdd SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/developing-features-tdd/SKILL.md · Build a new feature using strict test-driven development — UNDERSTAND → DESIGN → RED → VERIFY RED → GREEN → VERIFY…
git:20261103.b450fa3 · audit A · 5 stars
developing-features SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/developing-features/SKILL.md · Write production code with security-first thinking, SOLID design, pragmatic principles, observability, and strict…
git:20261103.b450fa3 · audit A · 5 stars
documenting-features SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/documenting-features/SKILL.md · Produce living, DDD-aligned feature documentation as a single Markdown file with 10 fixed sections — overview…
git:20261103.b450fa3 · audit A · 5 stars
ensuring-cross-platform SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/ensuring-cross-platform/SKILL.md · Apply platform-agnostic engineering rules so code, tests, and Docker builds behave identically on Linux, macOS, and…
git:20260619.c43368b · audit A · 5 stars
evaluating-ai-output SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/evaluating-ai-output/SKILL.md · Evaluate non-deterministic LLM/AI output with evals instead of one-shot "it worked" — define expected behavior first…
git:20260625.6520aec · audit A · 5 stars
exploratory-testing SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/exploratory-testing/SKILL.md · Run structured exploratory testing — write a charter, time-box a session, apply heuristics and oracles to discover bugs…
git:20260619.98096d2 · audit A · 5 stars
fixing-bugs SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/fixing-bugs/SKILL.md · Fix a bug using strict TDD — UNDERSTAND → REPRODUCE (RED) → VERIFY RED → FIX → VERIFY GREEN → VALIDATE → REFACTOR. Use…
git:20261103.b450fa3 · audit A · 5 stars
guarding-scope SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/guarding-scope/SKILL.md · Keep every piece of work inside the scope the user asked for — and detect scope creep, gold plating, and AI slop in any…
git:20261103.b450fa3 · audit A · 5 stars

Every file in cristhianzl/claude-skills-czl

Other files named validating-in-reality

validating-in-reality SKILL.md skill
cristhianzl/claude-skills-czl · configs/agnostic/skills/validating-in-reality/SKILL.md · Validate a bugfix or feature against the REAL running system — execute the user's cURL, assert actual responses, check…
git:20260806.29b92b9 · audit A · 5 stars

Browse by kind, by grade A, or by owner.