Is the Drift Testing skill free?

Yes. The skill itself is free from pactflow/pactflow-agent-skills. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Drift Testing SkillProof Score?

7.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 6/10, docs & honesty 3/5.

How do I install Drift Testing?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Drift Testing with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Drift Testing

Generates and runs OpenAPI-driven contract tests via SmartBear's Drift CLI — but `drift verify` hard-requires a PactFlow account login, undisclosed in the skill.

by pactflow · pactflow/pactflow-agent-skills

Works with setup

Install — copy the command Download source ↗

Test report

Verdict: Works with setup
Score: 7.6/10
Tested: Jul 14, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · d39749c

extract_endpoints.py and check_coverage.py ran for real against a bundled fixture spec and caught 4 of 7 missing response-code tests (401/403/404) that a hand-written baseline skipped — but `drift verify` itself refused to run with exit code 3 until we logged into a PactFlow tenant, a requirement the SKILL.md never mentions.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 6/10
Docs & honesty 3/5

What Drift Testing does

Official Pactflow/SmartBear skill that parses an OpenAPI spec, scaffolds Drift test cases (auth patterns, coverage-gap-aware stubs), and runs a verify-and-fix loop against a live or Prism-mocked server, with a bundled Python coverage checker and feedback-loop runner. The bundled scripts (extract_endpoints.py, check_coverage.py) work standalone with just pyyaml and genuinely outperformed a hand-written baseline. But `drift verify` itself refuses to run (exit code 3, 'no PactFlow URL configured') until you log into a PactFlow tenant — a real setup step the SKILL.md and references/auth.md never state as mandatory for plain local verification.

How to install Drift Testing

git clone https://github.com/pactflow/pactflow-agent-skills
cd pactflow-agent-skills
mkdir -p ~/.claude/skills
cp -r plugins/swagger-contract-testing/skills/drift-testing ~/.claude/skills/api-contract-testing

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Drift Testing

/api-contract-testing Generates and runs OpenAPI-driven contract tests via SmartBear's Drift CLI — but `drift verify` hard-requires a PactFlow account login, undisclosed in the skill.

It also activates on plain-language prompts like these:

Generate contract tests from this OpenAPI spec
Check if our API implementation drifted from the spec
Build a test suite that catches OpenAPI spec violations

Frequently asked questions

Is the Drift Testing skill free?: Yes. The skill itself is free from pactflow/pactflow-agent-skills. SkillProof publishes the install command and an independent test verdict at no cost.
Does Drift Testing work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Works with setup. extract_endpoints.py and check_coverage.py ran for real against a bundled fixture spec and caught 4 of 7 missing response-code tests (401/403/404) that a hand-written baseline skipped — but `drift verify` itself refused to run with exit code 3 until we logged into a PactFlow tenant, a requirement the SKILL.md never mentions.
What is the Drift Testing SkillProof Score?: 7.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 6/10, docs & honesty 3/5.
How do I install Drift Testing?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Drift Testing with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.