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Drift Testing

Category: Engineering  ·  Sub-category: testing  ·  Last updated:
Verifies API implementations against OpenAPI specifications using the Drift CLI, catching spec drift and supporting Bi-Directional Contract Testing (BDCT). Use when the user mentions Drift, API contract testing, provider contract testing, provider verification, spec drift, API conformance testing, OpenAPI verification, BDCT, drift expressions, drift datasets, drift lifecycle hooks, or Lua scripting in a testing context. Use when the user asks to write, run, or debug Drift test cases. Use when the user wants to test their API against an OpenAPI spec, generate tests from an OpenAPI spec, or check whether their API has drifted from its spec. Use when the user wants full endpoint coverage, wants all tests to pass, or asks to "keep running until everything passes".

About this skill (catalog notes)

Drift Testing includes a dedicated installation section; pricing or quota commentary; 19 code blocks for direct copy-paste. At roughly 1,786 words the SKILL.md is on the longer end of the catalog distribution.

Source
docs.pact.io/ai_tools/pactflow-skill
License
MIT
Original author
pactflow
Indexed lastmod
Catalog position
Engineering · testing
Indexed related skills
10

How Drift Testing fits the catalog

Drift Testing sits in the Engineering category under the testing sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Never modify the openapi spec that you are testing.

What this skill does

Drift Testing is a community-contributed Claude Code skill in the testing sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/drift-testing/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user mentions Drift, API contract testing, provider contract testing, provider verification, spec drift, API conformance testing, OpenAPI verification, BDCT, drift expressions, drift datasets, drift lifecycle hooks, or Lua scripting in a testing context. Use when the user asks to write, run, or debug Drift test cases.

Who uses this skill

The Drift Testing Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/drift-testing
curl -L https://claudskills.com/skills/drift-testing/SKILL.md \
  -o ~/.claude/skills/drift-testing/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/drift-testing/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/drift-testing/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\drift-testing\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Drift Testing Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/drift-testing/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Drift Testing skill do?
Verifies API implementations against OpenAPI specifications using the Drift CLI, catching spec drift and supporting Bi-Directional Contract Testing (BDCT). Use when the user mentions Drift, API contract testing, provider contract testing, provider verification, spec drift, API conformance testing, OpenAPI verification, BDCT, drift expressions, drift datasets, drift lifecycle hooks, or Lua scripting in a testing context. Use when the user asks to write, run, or debug Drift test cases. Use when the user wants to test their API against an OpenAPI spec, generate tests from an OpenAPI spec, or check whether their API has drifted from its spec. Use when the user wants full endpoint coverage, wants all tests to pass, or asks to "keep running until everything passes".
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Drift Testing skill?
Use Drift Testing when your Claude Code task falls under the Engineering category — specifically in the testing area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Drift Testing" or describe the task and let Claude pick). Browse related skills at /category/engineering/.
What is a Claude Code skill and how does the Drift Testing skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Drift Testing is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
pactflow. (2026). Drift Testing [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/drift-testing/
BibTeX
@misc{drift-testing-2026,
  author    = {pactflow},
  title     = {Drift Testing [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/drift-testing/}
}

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