Q49 of 60 — CCA Practice Exam

Claude Code for Continuous Integration

Your CI pipeline uses Claude Code to automate test generation and deployment validation. After a recent refactor, engineers report that Claude is silently failing to execute any file write operations — test scaffolds are never created and build artifacts go missing. Examining the agent logs, you find no error messages, but trace output shows all Write and Edit tool calls are being blocked. The hooks configuration was updated last sprint. What is the most likely root cause?

A. The Write and Edit tools are not supported in CI environments and must be replaced with MCP server equivalents using the mcp__<server>__<action> naming convention.

B. A PreToolUse hook was added or modified with an empty or overly broad matcher, causing it to match all tool calls — including Write and Edit — and return permissionDecision: 'deny'.

C. The PostToolUse hook for Write is returning a deny decision after the tool runs, and the agent is rolling back file changes before they are persisted.

D. Claude Code requires explicit allow entries for each built-in tool in the ClaudeAgentOptions; without them, tools default to blocked after an agent configuration change.