Trace

Domain: trace

Time-travel debugging domain that records CDP events into SQLite for SQL-based querying and heap snapshot comparison.

Profiles

• workflow
• full

Typical scenarios

• Record browser events
• Query trace data with SQL
• Diff heap snapshots

Common combinations

• trace + debugger + browser

Representative tools

• start_trace_recording — Start recording CDP events, debugger state, and memory writes into a SQLite trace database.
• stop_trace_recording — Stop the active trace recording and finalize the SQLite database.
• query_trace_sql — Execute a read-only SQL query against a trace database.
• seek_to_timestamp — Reconstruct application state at a specific timestamp from a recorded trace.
• diff_heap_snapshots — Compare two heap snapshots from a trace and return the differences.
• export_trace — Export a trace database to Chrome Trace Event JSON format.
• summarize_trace — Generate a compact, LLM-friendly summary of a trace database.

Full tool list (7)

Tool	Description
start_trace_recording	Start recording CDP events, debugger state, and memory writes into a SQLite trace database.
stop_trace_recording	Stop the active trace recording and finalize the SQLite database.
query_trace_sql	Execute a read-only SQL query against a trace database.
seek_to_timestamp	Reconstruct application state at a specific timestamp from a recorded trace.
diff_heap_snapshots	Compare two heap snapshots from a trace and return the differences.
export_trace	Export a trace database to Chrome Trace Event JSON format.
summarize_trace	Generate a compact, LLM-friendly summary of a trace database.