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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.14 20 Jan 2026

Claude.ai MCP Server Integration Improvements

What

Enhanced Claude.ai MCP server integration with better eligibility checking and telemetry.

Details

New eligibility states tracked: disabled_gate, disabled_env_var, no_oauth_token, missing_scope, eligible
Requires user:mcp_servers OAuth scope
Can be disabled via ENABLE_CLAUDEAI_MCP_SERVERS environment variable
Improved logging for debugging MCP server connectivity

Evidence

Q_0 at line 458270 (Claude.ai MCP initialization, contains "tengu_claudeai_mcp_eligibility")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.14 →