Claude API & SDK Mastery Practice Tests

What to Expect

The Claude API & SDK Mastery exam costs Free — these are Pruvos practice tests for Claude API and SDK knowledge, not a formal vendor-administered certification. You'll face 50 questions in 60 minutes, giving you roughly 1 minute and 12 seconds per question. 70% to pass. Straightforward percentage-based scoring across all six domains.

Prerequisites and Audience

You should have hands-on experience with the Claude API — sending messages, handling responses, using tool calls, and working with at least one of the official SDKs (Python or TypeScript). If you've never made an API call to Claude and just used the web chat interface, these tests will be hard. Basic programming skills and familiarity with REST APIs are assumed. Developers, AI engineers, and technical product managers who build applications using the Claude API and Anthropic SDKs. If you're integrating Claude into production systems, building agent workflows, or managing API usage and costs, these tests validate that you understand the platform deeply enough to do it well.

Staying Certified

Not applicable — these are practice tests for knowledge validation. AI platforms evolve rapidly, so revisiting periodically to stay current with new API features is a good idea.

Six domains cover the full API surface: Messages API and Core Concepts (20%) and Tool Use and Function Calling (20%) are the heaviest — together they're 40% of the test. Models, Pricing and Rate Limits (16%) and Streaming, Vision and Multimodal (16%) test operational knowledge. Prompt Engineering and Caching (14%) covers optimization techniques. Agent SDK, Batches and Advanced Features (14%) covers the newer capabilities. This is a practical assessment — it tests whether you can actually build with the API, not just describe what it does.

Messages API & Core Concepts

Messages API & Core Concepts at 20% is a substantial portion of the exam. You can't afford to be weak here. Focus on understanding the core concepts and common scenario patterns.

Tool Use & Function Calling

Tool Use & Function Calling at 20% is a substantial portion of the exam. You can't afford to be weak here. Focus on understanding the core concepts and common scenario patterns.

Models, Pricing & Rate Limits

Models, Pricing & Rate Limits accounts for 16% of questions. While not the heaviest domain, it can make the difference between passing and failing. Don't neglect it.

Streaming, Vision & Multimodal

Streaming, Vision & Multimodal accounts for 16% of questions. While not the heaviest domain, it can make the difference between passing and failing. Don't neglect it.

Question Format

50 questions in 60 minutes. Multiple-choice covering API usage scenarios, SDK configuration, error handling, and architectural decisions. Questions are practical: "you need to send an image along with a text prompt — how do you structure the message?" or "your application needs Claude to call an external function — what does the tool definition schema look like?"

Study Timeline

Two to four weeks for developers actively building with the Claude API. If you've used the web interface but haven't worked with the API directly, budget four to six weeks and spend most of that time writing code. Build a project that uses the Messages API, tool calling, streaming, and vision — that covers the majority of what's tested.

Top Resources

The Anthropic documentation at docs.anthropic.com is the definitive source. The API reference covers every endpoint, parameter, and response format. The cookbook repository on GitHub has practical examples. The official Python and TypeScript SDKs have well-documented code that shows correct usage patterns. Actually building applications is the best preparation — reading documentation only gets you so far.

Common Mistakes

Knowing the chat interface but not the API. The Messages API has specific structures for system prompts, multi-turn conversations, tool definitions, and content blocks that don't map one-to-one to the web chat experience. The other big mistake is not understanding token counting, pricing tiers, and rate limits — production applications need to manage these, and the test expects you to know how.

Hands-On Advice

Build an application that uses these features: multi-turn conversations with the Messages API, tool use where Claude calls your functions, streaming responses for real-time output, vision by sending images for analysis, and prompt caching to reduce costs on repeated context. If you can build that and explain why you made each architectural choice, you're well prepared.

Testing Options

Pruvos platform — no external testing center or proctoring required.

Time Management

60 minutes for 50 questions — 72 seconds each. The questions are technical but focused, so if you've been building with the API, you'll move through them quickly. Don't get bogged down on questions about features you haven't used — flag them and come back.

How Hard Is This Exam?

On a scale of 1 to 10, these practice tests sit at about a 5. They're testing practical API knowledge, not computer science theory. If you've been building with the Claude API for a few months, most questions should feel familiar. The difficulty comes from breadth — you need to know the Messages API, tool calling, streaming, vision, batches, caching, and the Agent SDK. Developers who've only used basic chat completions will find gaps in their knowledge around tool use, multimodal inputs, and advanced features.

Pass Rate Data

As Pruvos practice tests, your performance depends on your hands-on experience. Developers who actively build with the Claude API typically score well. Use Test 1 diagnostically to identify which API areas you haven't explored yet, then build something with those features before retesting.

Each Pruvos practice test covers the Claude API comprehensively: 50 questions with a 60-minute timer, distributed across six domains — Messages API and Core Concepts (20%), Tool Use and Function Calling (20%), Models, Pricing and Rate Limits (16%), Streaming, Vision and Multimodal (16%), Prompt Engineering and Caching (14%), and Agent SDK, Batches and Advanced Features (14%). We have 6 full practice tests with 300 unique questions. The two 20% domains — Messages API and Tool Use — are your highest-value study areas. If either is weak on Test 1, build a project that exercises those API features before moving to the next test.

Practice tests are the single most effective study tool for the Claude API & SDK exam. They reveal your weak domains before the real exam does, and getting questions wrong in practice is how you learn. Each practice test here mirrors the real exam format: 50 questions, timed at 60 minutes, with the same 6-domain distribution.

Don't just take practice tests and check your score. Review every wrong answer and understand why the correct option is better. For the Claude API & SDK, pay special attention to Messages API & Core Concepts (20%) and Tool Use & Function Calling (20%) questions since they carry the most weight.