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ISTQB · Foundation Extension · CTFL-AT

ISTQB Agile Tester (CTFL-AT) Certification Guide

The ISTQB Agile Tester Extension (CTFL-AT) is the globally recognised Foundation-level extension for QA engineers working in Scrum, Kanban and XP teams. It builds on the core CTFL syllabus and teaches you how to test in short iterations, collaborate with developers and product owners, apply TDD, BDD and ATDD, and use Agile-specific test techniques and tools. This guide covers the full syllabus, exam format, prerequisites, study plan, fees and career impact — updated for 2026.

New to ISTQB? Start with the ISTQB Foundation Level (CTFL) — it's a hard prerequisite for the Agile Tester exam.

CTFL-AT exam at a glance

ItemDetail
Full nameCertified Tester Foundation Level – Agile Tester Extension
PrerequisiteValid ISTQB CTFL Foundation Level certificate
Questions40 multiple choice, single best answer
Duration60 min (75 min for non-native English)
Pass mark26/40 = 65%
Cognitive levelsK1 (remember), K2 (understand), K3 (apply)
Syllabus versionCTFL-AT v2014 (current)
DeliveryOnline (remote-proctored) or paper at test centres
Typical feeUSD 199–249 · GBP 150–180 · INR 8,500–10,000
ValidityLifetime — no renewal required

CTFL-AT syllabus: 3 chapters, 16 hours of instruction

The Agile Tester Extension syllabus is compact — 3 chapters, ~60 pages, 16 hours of accredited classroom instruction. Here's what each chapter covers and how it maps to exam questions.

Chapter 1 · 150 min instruction
Agile Software Development
  • The Agile Manifesto — 4 values, 12 principles
  • Whole-team approach & early / frequent feedback
  • Agile approaches: Scrum, Kanban, XP (Extreme Programming)
  • Collaborative user story creation & retrospectives
  • Continuous integration, release & iteration planning
Chapter 2 · 105 min instruction
Fundamental Agile Testing Principles, Practices & Processes
  • The role of tester in an Agile team (independence, embedded QA)
  • Testing activities in Agile projects (test levels, test types)
  • Status of testing in Agile projects — task boards, burn-down charts
  • Test-driven development (TDD), acceptance test-driven development (ATDD), behaviour-driven development (BDD)
  • Test pyramid & agile testing quadrants
Chapter 3 · 480 min instruction
Agile Testing Methods, Techniques & Tools
  • Acceptance criteria, adequate coverage, definition of done
  • Applying acceptance test-driven development (ATDD)
  • Functional & non-functional black-box test design in Agile
  • Exploratory testing & session-based test management (SBTM)
  • Test automation tools, CI/CD pipelines, task management & communication tools

Why take the ISTQB Agile Tester certification?

Global recognition
ISTQB certifications are recognised in 130+ countries — CTFL-AT is the standard Agile QA credential worldwide.
Bridges CTFL to real Agile work
Core CTFL teaches classical testing; CTFL-AT translates it into Scrum sprints, Kanban flow and continuous delivery.
TDD / BDD / ATDD fluency
Learn how tests drive development — the vocabulary and workflow expected in modern engineering teams.
Higher-paid Agile QA roles
Employers pay a 10–20% premium for QA engineers who can operate as embedded team members, not gatekeepers.
Stepping stone to SDET
CTFL-AT + test automation skills is the fastest path from manual QA to Software Development Engineer in Test.
Lifetime validity
Pass once, keep forever. No renewal fees, no CPD hours to log.

4-week study plan for CTFL-AT

  1. Week 1 — Agile foundations. Read Chapter 1 of the syllabus. Understand the Agile Manifesto, Scrum roles & events, Kanban board mechanics, and XP practices. If you've never worked in Scrum, watch a real sprint planning + retrospective recording on YouTube.
  2. Week 2 — Tester's role in Agile. Chapter 2. Focus on how testing responsibilities shift in Agile teams (whole-team approach, embedded QA, no separate test phase). Learn the testing quadrants and the test pyramid — both are exam favourites.
  3. Week 3 — Techniques & tools. Chapter 3, the largest chapter. Practise writing acceptance criteria, ATDD examples, and BDD Gherkin scenarios. Understand exploratory testing with session-based test management (SBTM) charters.
  4. Week 4 — Practice & exam booking. Take 2–3 timed mock exams. Review every wrong answer against the syllabus. Book the real exam once you consistently score 32/40 (80%) on mocks.

CTFL vs CTFL-AT: what's different?

AspectCTFL (Foundation)CTFL-AT (Agile Tester)
PrerequisiteNoneValid CTFL certificate
Syllabus size~120 pages, 6 chapters~60 pages, 3 chapters
Instruction hours~24 h~16 h
FocusGeneral testing fundamentals (any SDLC)Testing in Scrum, Kanban, XP
Techniques emphasisedBVA, EP, decision tables, state transitionTDD, BDD, ATDD, exploratory, SBTM
Test documentationTraditional test plans (IEEE 829)User stories, acceptance criteria, DoD
Career signalEntry-level QA competencyReady for embedded QA in delivery teams

Agile Tester (CTFL-AT) FAQs

1.What is the ISTQB Agile Tester (CTFL-AT) certification?

ISTQB Agile Tester Extension (CTFL-AT) is a Foundation-level extension certification for testers working in Agile teams — Scrum, Kanban, XP. It covers Agile fundamentals, testing principles adapted to Agile, and Agile-specific test techniques and tools. It complements the core ISTQB Foundation Level (CTFL) certification.

2.Is CTFL Foundation Level a prerequisite for the Agile Tester exam?

Yes. You must hold a valid ISTQB Certified Tester Foundation Level (CTFL) certificate before you can sit the Agile Tester Extension exam. There are no exceptions — ISTQB verifies your CTFL certificate ID at booking.

3.What is the CTFL-AT exam format?

The Agile Tester exam is 40 multiple choice questions, 60 minutes duration (75 minutes for non-native English speakers), with a 65% pass mark (26/40). Questions test K1 (remember), K2 (understand) and K3 (apply) cognitive levels — similar structure to the core CTFL exam.

4.What are the 3 chapters of the ISTQB Agile Tester syllabus?

Chapter 1: Agile Software Development (Agile Manifesto, Scrum, Kanban, XP, whole-team approach, early & frequent feedback). Chapter 2: Fundamental Agile Testing Principles, Practices & Processes (testing status, role of tester in Agile team, test levels, TDD/BDD/ATDD). Chapter 3: Agile Testing Methods, Techniques & Tools (test-driven development, acceptance criteria, exploratory testing, test automation tools).

5.How long should I study for the CTFL-AT exam?

Most candidates with existing Agile experience need 20–30 hours of focused preparation. If you're new to Scrum or Kanban, budget 40–50 hours. The syllabus is roughly one-third the size of the core CTFL syllabus, so preparation is faster — but the Agile-specific vocabulary catches many candidates off guard.

6.What is the exam fee for ISTQB Agile Tester?

Exam fees vary by country and provider — typically USD 199–249 in the US, GBP 150–180 in the UK, and INR 8,500–10,000 in India. Book through your national ISTQB board (ASTQB, UKTB, ISTQB India) or an accredited exam provider like Pearson VUE.

7.Is ISTQB Agile Tester worth it for a QA career?

Yes, if you work in or plan to join an Agile team. CTFL-AT signals to employers that you understand testing in short iterations, continuous integration, and cross-functional teams. It's particularly valuable for QA engineers moving from waterfall shops to Scrum teams, and for testers targeting SDET or Agile QA lead roles.

8.How is Agile testing different from traditional testing?

Agile testing is continuous (every sprint), collaborative (whole-team responsibility, not a separate QA phase), and lightweight on documentation. Testers are embedded in the delivery team, pair with developers, write automated checks alongside code, and use acceptance criteria + user stories instead of heavy test plans. The CTFL-AT syllabus covers this mindset shift in depth.