Running config-drift-checker as a service, Testing QA Tools

config-drift-checker Agency Implementation, Client Agent Reliability

Learn how to set up baseline pinning and canary testing for Claude Code agents you deliver to clients, automate regression detection across model releases, and generate audit-ready test reports with grader verdicts and judge explanations. This course teaches agencies to catch configuration drift before client handoff and maintain agent performance across Claude updates.

Open the decision record for config-drift-checker

What does running config-drift-checker for clients commit you to?

Published figures for this service. Blank fields are not published.

Monthly tool cost
Not published (open-source tool with no public pricing tier; infrastructure costs vary)
Time to first value
days (as per time_to_value)
Payback
Not modeled
Guided implementation
8 hours

Is config-drift-checker worth running as a client service?

config-drift-checker offers a concrete technical solution for maintaining Claude Code setups, and the open-source core provides a low-cost starting point. However, the agency must invest in setup and client onboarding; ROI depends on your own pricing and labor efficiency.

An agency-fit judgement for reselling this service. It is separate from the tool description on the decision record.

Before you start

What has to be in place before the first client engagement.

Tools and subscriptions

  • GitHub Account and organizational repo
  • Anthropic API key
  • Claude Code CLI installed
  • CI/CD pipeline for running tests on PRs

People and inputs

  • CLAUDE.md configuration, skills, and hooks for at least one test client
  • Documentation or walkthrough of config-drift-checker's setup (open-source)
  • Expertise in Claude Code and custom agent configurations

Lessons in this course

7 lessons on running config-drift-checker for clients.

  1. 01Why config-drift-checker Compounds for Agency LTVStrategy
  2. 02config-drift-checker Canary GateConcept
  3. 03config-drift-checker Rule: Adopt Only When Your Clients Run Claude Code at ScaleEvaluation Rule
  4. 04config-drift-checker: Buy vs Skip (Claude Code Agency Fit)Decision Framework
  5. 05Why Agencies Fail With config-drift-checker in Claude Code DeliveryFailure Pattern
  6. 06config-drift-checker Claude Code Reliability Retainer (5-10 days)Implementation Blueprint
  7. 07config-drift-checker Baseline Pinning and Canary Setup (Onboarding)Operating Procedure

Included with the course

6 working documents for delivering this service.

  • CLAUDE.md Test Case Generation Worksheetworksheet
  • Client Agent Baseline Audit Checklistchecklist
  • GitHub Actions Workflow Setup for Canary Testingtemplate
  • Drift Index Reporting Template for Client Handofftemplate
  • Cross-Agent Portability Testing SOP (Codex, Cursor, Claude)sop
  • Grader Verdict Interpretation Guide for Client Reportsguide

Listed by name. These documents are not yet published as individual downloads.