Use regex filters in the Search Console Search Analytics API to segment queries or pages matching a pattern
domain: developers.google.com · 6 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Authenticate and construct a searchanalytics.query POST request body
Add a 'dimensionFilterGroups' entry with 'dimension': 'query' and 'operator': 'includingRegex' or 'excludingRegex'
Provide a RE2-compatible regular expression string in the 'expression' field (Google uses the RE2 engine, not PCRE)
Test your regex against RE2 syntax before submitting — lookaheads and backreferences are not supported
Combine multiple filter groups using 'groupType': 'and' or 'or' to build compound segment queries
Verify the response rowCount against an unfiltered baseline to confirm the pattern is matching as expected
Known gotchas
RE2 does not support lookaheads, lookbehinds, or backreferences — patterns that work in Python re or JavaScript regex may silently fail or error
Regex filters apply after row aggregation, so a filter on 'query' still groups by whichever dimensions you requested
The 'includingRegex' and 'excludingRegex' operators were added in late 2021; older client libraries that hard-code allowed operator values may not include them
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