Network

Domain: network

Request capture, response extraction, HAR export, safe replay, and performance tracing.

Profiles

• workflow
• full

Typical scenarios

• Capture requests
• Extract auth material
• Replay requests safely
• Record performance traces

Common combinations

• browser + network
• network + workflow

Representative tools

• network_enable — Enable network request monitoring. Must be called before page_navigate to capture requests.
• network_disable — Disable network request monitoring
• network_get_status — Get network monitoring status (enabled, request count, response count)
• network_get_requests — Get captured network requests. Large results (>25KB) automatically return a summary with detailId.
• network_get_response_body — Get response body for a specific request. Auto-truncates responses >100KB. Use returnSummary=true for large files.
• network_get_stats — Get network statistics (total requests, response count, error rate, timing)
• performance_get_metrics — Get page performance metrics (Web Vitals: FCP, LCP, FID, CLS)
• performance_start_coverage — Start JavaScript and CSS code coverage recording
• performance_stop_coverage — Stop coverage recording and return coverage report
• performance_take_heap_snapshot — Take a V8 heap memory snapshot

Full tool list (29)

Tool	Description
network_enable	Enable network request monitoring. Must be called before page_navigate to capture requests.
network_disable	Disable network request monitoring
network_get_status	Get network monitoring status (enabled, request count, response count)
network_get_requests	Get captured network requests. Large results (>25KB) automatically return a summary with detailId.
network_get_response_body	Get response body for a specific request. Auto-truncates responses >100KB. Use returnSummary=true for large files.
network_get_stats	Get network statistics (total requests, response count, error rate, timing)
performance_get_metrics	Get page performance metrics (Web Vitals: FCP, LCP, FID, CLS)
performance_start_coverage	Start JavaScript and CSS code coverage recording
performance_stop_coverage	Stop coverage recording and return coverage report
performance_take_heap_snapshot	Take a V8 heap memory snapshot
performance_trace_start	Start a Chrome Performance Trace recording using the CDP Tracing domain.
performance_trace_stop	Stop a running Performance Trace and save the trace file.
profiler_cpu_start	Start CDP CPU profiling.
profiler_cpu_stop	Stop CPU profiling, save the profile, and return top hot functions.
profiler_heap_sampling_start	Start V8 heap allocation sampling.
profiler_heap_sampling_stop	Stop heap allocation sampling and return the top allocators.
console_get_exceptions	Get captured uncaught exceptions from the page
console_inject_script_monitor	Inject a monitor that tracks dynamically created script elements. Use persistent: true to survive page navigations.
console_inject_xhr_interceptor	Inject an XHR interceptor to capture AJAX request/response data. Use persistent: true for the interceptor to survive page navigations.
console_inject_fetch_interceptor	Inject a Fetch API interceptor to capture fetch request/response data including headers, body, and timing.
console_clear_injected_buffers	Clear injected in-page monitoring buffers (XHR/Fetch queues and dynamic script records) without removing interceptors
console_reset_injected_interceptors	Reset injected interceptors/monitors to recover from stale hook state and allow clean reinjection
console_inject_function_tracer	Inject a Proxy-based function tracer to log all calls to a named function. Use persistent: true to survive page navigations.
network_extract_auth	Scan all captured network requests and extract authentication credentials (tokens, cookies, API keys, signatures).
network_export_har	Export all captured network traffic as a standard HAR 1.2 file.
network_replay_request	Replay a previously captured network request with optional modifications.
network_intercept_response	Add response interception rules using CDP Fetch domain. Matched requests will receive a custom response instead of the real server response.
network_intercept_list	List all active response interception rules with hit statistics.
network_intercept_disable	Remove interception rules. Provide ruleId to remove a single rule, or all=true to disable all interception.