Did you know you can turn your verification checks into Claude Code skills?

Hi, it's me, I'm so excited! Today I found something that should really click for anyone using Claude Code. The manual checking you do by hand every time can actually be handed off to skills!

Claude Blog claude.com

What was announced?

According to the Claude Blog, there's a new writeup on turning "verification loops" in Claude Code into skills. A verification loop is a repeating cycle where an AI agent checks its own work — running tests, linters, or custom checks — and fixes what fails before moving on.

Claude Code already ships with a handful of built-in verification tools, and the article's whole point is to build on top of those and turn your own verification loop into a skill.

Why it matters

Claude Code already has several verification mechanisms built in.

• The /verify skill — builds and runs your app, then observes the resulting changes
• Toolchain integration — catches error codes and warnings from linters and build tools
• Code Review (research preview) — an automated PR review service
• GitHub Actions integration — runs verification on every push or PR
• Spec validation — checks changes against a markdown specification
• Rubrics in Claude Managed Agents (beta) — a grader agent evaluates the work and can trigger an automatic rework loop

Even with all of that in place, project-specific checks still tend to fall on a human to verify by hand, every single time. The article's premise is that if you write down the correction patterns you repeat yourself, as a skill, Claude can take over the checking-and-fixing part.

What changes

If you write down the pattern you keep pointing out — "the one I always catch" — in plain language, you can hand it to Claude the same way you'd brief a new teammate on day one. The article notes that deterministic, project-specific rules that generic linters miss are especially good candidates for automation. "Reject any migration that drops a column without a backfill step" is given as exactly that kind of example.

Dive Deep

The article describes two ways to create a skill.

• Using the skill-creator plugin — asking something like /skill-creator Create a skill for verifying frontend changes end-to-end. Interview me about my workflow. interviews you about your workflow and builds the skill for you
• Creating it manually — placing a markdown file in the .claude/skills/ directory, with frontmatter (name, description, allowed-tools) followed by plain-language verification instructions

Four deployment patterns are covered for how to run these skills once they exist.

• Standalone — deliberately invoked for cross-cutting checks, such as security scans, accessibility audits, or license verification
• Embedded — runs automatically as part of a producing skill's workflow, by appending verification steps to an existing skill's body
• Chained — one skill calls another on completion, so multiple verified handoffs run end-to-end. The article warns that "chained verification loops can increase token spend, so it's best to test these loops before deploying them broadly"
• On every PR — team-wide automation where the same procedures apply to every pull request regardless of author

The suggested workflow is: identify the repetitive manual follow-ups from your recent work, try the built-in /verify skill first, document the procedure in plain language, create the skill using skill-creator or by hand, test it on new tasks and iterate, then experiment with chaining skills together for end-to-end flows. The article wraps up with this line.

The more you can encode for Claude to follow, the more often Claude's response will land closer to what you want on the very first try.

Wrap-up

• A verification loop is a cycle where Claude checks its own work with tests or linters, then fixes failures before moving on
• Claude Code already has multiple verification mechanisms, including /verify, GitHub Actions integration, and Code Review (research preview)
• Writing down the project-specific rules you keep correcting by hand, as a skill, lets Claude take over that checking role
• Skills can run standalone, embedded, chained, or on every PR
• If you use Claude Code day to day, it's worth turning your "usual fix" into a skill!