Free Practice Questions for LangChain Certified Agent Engineer Certification
- Guide checked for updates:
- 9 Oct 2026
- Question bank created:
- 29 Aug 2026
- Question bank last updated:
- 7 Oct 2026
Study with 400 exam-style practice questions designed to help you prepare for the LangChain Certified Agent Engineer.
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Exam Details
Key information about LangChain Certified Agent Engineer
- Multiple choice
Semi-open book, allowing specific LangChain resources (LangSmith, Docs, Academy), with a dedicated LangSmith organization provided for the exam.
Completion of recommended LangChain Academy courses is strongly recommended.
One free resit is included with the original exam fee. Additional resits require paying the full exam fee again.
Live proctored online exam
smith.langchain.com (LangSmith), docs.langchain.com (Docs), academy.langchain.com (Academy)
120 minutes
40 questions
Google search or any other web search, AI tools (ChatGPT, Claude Code, etc.), The AI helper on docs.langchain.com, Browser agents or automation, Second screens (monitors or phones), Any outside communication
Exam Topics & Skills Assessed
Skills measured (from the official study guide)
1: Build
1.1: Differences between create_agent and deepagents
Differences between create_agent and deepagents.
1.2: Middleware
Middleware.
1.3: Context engineering for long-running agents
Context engineering for long-running agents.
1.4: AGENTS.md and SKILL.md
AGENTS.md and SKILL.md.
1.5: Sandboxing
Sandboxing.
2: Test
2.1: Code-based evaluators vs. LLM-as-judge
Code-based evaluators vs. LLM-as-judge.
2.2: Online vs. offline evaluators
Online vs. offline evaluators.
2.3: Running and interpreting experiments
Running and interpreting experiments.
2.4: Evaluator alignment
Evaluator alignment.
2.5: Adding examples to a dataset
Adding examples to a dataset.
3: Deploy
3.1: Deployment terminology: graph, deployment, revision, assistant, thread, run
Deployment terminology: graph, deployment, revision, assistant, thread, run.
3.2: Multi-region serving
Multi-region serving.
3.3: Secret handling
Secret handling.
3.4: Authentication vs. authorization
Authentication vs. authorization.
3.5: Storage durability
Storage durability.
4: Monitor
4.1: Reading traces
Reading traces.
4.2: Grouping traces into threads
Grouping traces into threads.
4.3: Tracking costs and user sentiment
Tracking costs and user sentiment.
4.4: Online Evals vs. Insights
Online Evals vs. Insights.
4.5: Alerting
Alerting.
Techniques & products