Domain 3: Claude API & Integration

Claude Certified Associate - Foundations · 78 questions

• How does a developer authenticate requests to the Claude API?
• In the Claude Messages API, what are the valid roles for messages in the 'messages' array?
• What does the 'maxtokens' parameter control in the Claude API?
• What is the benefit of using streaming when calling the Claude API?
• A developer receives a 429 HTTP status code from the Claude API. What does this indicate?
• What is the primary benefit of using prompt caching in the Claude API?
• What is the purpose of the 'stopsequences' parameter in the Claude API?
• The Anthropic Message Batches API is best suited for which scenario?
• What happens if you send a Claude API request where the messages array starts with an 'assistant' role message?
• Why is it important to specify an exact model version (e.g., claude-sonnet-4-5) rather than an alias (e.g., claude-sonnet-latest) in production applications?
• What is the Anthropic Console (console.anthropic.com) used for?
• How does Anthropic typically price Claude API usage?
• If you set maxtokens=100 and Claude's natural response would be 500 tokens, what happens?
• What is the 'metadata' parameter in the Claude API used for?
• A production application using Claude receives an occasional 529 'Overloaded' error. What is the BEST practice for handling this?
• Which HTTP status code would you receive if you send a Claude API request with an invalid API key?
• How does a developer maintain conversation context across multiple API calls with Claude?
• Which Python library does Anthropic officially provide for interacting with the Claude API?
• What is the correct base URL for the Anthropic Claude API?
• The Anthropic Python SDK supports async operations. What is the PRIMARY benefit of using the async client?
• What is the purpose of the 'anthropic-version' header required in Claude API requests?
• Why would a developer use Anthropic's token counting API endpoint before sending a message?
• When Anthropic deprecates an older Claude model, what typically happens to API calls using that model ID?
• An application frequently generates the same type of report (daily sales summary) with only the data changing each time. Which optimization strategy would MOST reduce API costs?
• A company is building a customer-facing chatbot and wants access to Claude. What is the CORRECT way to access the Claude API for commercial use?
• What Content-Type header should be used when making requests to the Claude API?
• A conversation history is growing close to the context window limit. What is a common strategy to continue the conversation without losing important context?
• A developer wants to use Claude within AWS infrastructure. What is the AWS service that provides access to Claude?
• What does the 'anthropic-beta' header enable in Claude API requests?
• Claude is available through Google Cloud as well as AWS. What is the Google Cloud service that provides Claude access?
• In a standard Claude API response, where does the actual text content of Claude's response appear?
• The Claude API response includes a 'usage' field. What information does this provide?
• Anthropic provides an official Node.js/TypeScript SDK for Claude. What package would a developer install?
• A data scientist wants to use Claude in a Jupyter notebook or Google Colab. What is the recommended approach for handling the API key securely?
• A Claude API response returns stopreason: 'endturn'. What does this indicate?
• A developer wants to build a system where Claude reads and analyzes content from websites. What architecture is required?
• Some developers use Claude through an OpenAI-compatible API layer. What should developers be aware of when using these compatibility layers?
• A company needs to classify 500,000 support tickets overnight with Claude. Which approach BEST fits this workload?
• When defining a tool for Claude tool use, which element is REQUIRED so Claude can call the tool correctly?
• How does Anthropic prompt caching primarily reduce cost and latency on repeated requests?
• Which Messages API conversation structure is correct?
• Your production service receives HTTP 429 responses from the Claude API during traffic spikes. What is the BEST client behavior?
• What does setting toolchoice to force a specific tool accomplish?
• A Claude response stops mid-sentence with stopreason indicating length. What is the most likely cause?
• When is streaming Claude responses MOST beneficial?
• After submitting a Message Batch, how do you obtain results?
• Why should teams estimate tokens before large Claude deployments?
• In a multi-tool Claude agent, what should the application do after receiving a tooluse block?
• Anthropic announces deprecation of a model ID your app uses. What should you do?
• What is the purpose of stop sequences in a Claude API request?
• What does topp control in Claude sampling?
• A product requirement is p95 latency under 2 seconds for interactive chat. Which API path fits?
• Why do Anthropic API clients send an anthropic-version header (or SDK equivalent)?
• When Claude returns multiple tooluse blocks in one response, what should the client typically do?
• What typically reduces prompt cache hit rates?
• In the Claude Messages API, user content may include which of the following?
• If a tool execution fails, what should the client return to Claude?
• Time-to-first-token (TTFT) matters most for:
• When retrying Claude API requests after network failures, clients should:
• Anthropic API rate limits typically scale with:
• Using the official Anthropic Python SDK is preferred over raw HTTP because:
• A robust agent loop must:
• In Message Batches, customid is useful to:
• A tool permission manifest should specify:
• HTTP 401 from Claude API most likely indicates:
• Prompt caching cachecontrol ephemeral typically means:
• Large toolresult payloads can cause:
• A risk of streaming partial JSON to a naive parser is:
• Why might Batch API pricing be lower than interactive Messages pricing?
• If stopreason indicates tool use, the client should:
• When using async SDK clients for high throughput, you should still:
• In multi-tenant SaaS using Claude, you must:
• For streaming responses, clients should configure:
• For a web-fetch tool, allowlisting domains is preferred over open fetch because:
• Filling a 200k context regularly implies:
• Tool execution authorization should depend on:
• Canary instructions hidden in documents can help detect:
• Installing third-party tools/plugins into a Claude agent requires: