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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.260 ·

MCP websearch built-in server steers API keys out of headers

Web-search MCP server config now steers you away from putting API keys directly in headers.

TierYou'll noticehow much it should matter to you
Useful1my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaMCPwhat it touches
KindImprovementsin v2.1.260,
Group of 2 You'll notice

Web-search MCP server config now steers you away from putting API keys directly in headers.

The built-in websearch MCP server's config schema now more strongly steers users toward a headers-helper script instead of storing provider API keys directly in the headers field, with new copy framing the API key as a credential that should not be stored inline.

The headers subfield's redaction annotation changed its redact mode from drop to presence, so config/telemetry snapshots now record only that headers were set rather than fully dropping the field.

See this entry in the whole of v2.1.260 →

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