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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 v2.1.136

Safer MCP Client Secret Storage

When adding HTTP/SSE MCP servers with --client-secret, Claude Code now preserves the server config even if secure storage is unavailable, then tells you how to retry secret storage.

Usage
claude mcp add --transport http my-server https://example.com/mcp --client-id abc --client-secret
Evidence

MCP add fallback warning (search for "Server added, but the client secret could not be stored")

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

See this entry in the whole of v2.1.136 →