[waleedlatif1]

Summary

• Search MCP date filters (startDate, endDate, modifiedAfter, modifiedBefore) now accept an ISO datetime without a UTC offset and read it as UTC, instead of failing validation
• When the offset was missing, the client always resent the same value with Z appended, so the result is the same and the call no longer spends a full extra round on the retry
• tools/list is byte-identical (same format: "date-time", same descriptions, no regex), so this adds no tokens to any request
• A date with an offset passes through unchanged; anything that isn't a datetime (e.g. a bare date) is still rejected

Type of Change

• Bug fix

Testing

• server.protocol.test.ts: an offset-less startDate/endDate reaches the use case as UTC, an offset value passes through, and a bare date is still rejected. Fails on staging, passes with the fix
• lib/knowledge/mcp/ suite: 50/50 passing
• A/B on the Search MCP benchmark (83 questions, paired against two same-commit controls): all 7 offset-less dates were accepted (controls rejected 7 of 7), correctness +1.2pp (CI −1.8 to +4.5), no case regressions, input tokens flat
• biome on changed files; CI runs the full audits and type-check

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing (new tests pass the test-audit authoring gate)
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

[vercel]

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1 Skipped Deployment

Project	Deployment	Actions	Updated
docs	Skipped		Nov 8, 2026 11:37am UTC

[cubic-dev-ai]

No issues found across 2 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

_{Turn on auto-fix | Re-trigger cubic}

[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge.

Summary

Search MCP date filters now treat datetimes without an offset as UTC.

• Search MCP reads offset-less date filters as UTC.

No actionable issues found. Tests were inspected, not run.

_{Reviews (1) · Last reviewed commit: "fix(search): read Search MCP date filter..." · Reviewed by Greptile}