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Title: fix(auth): preserve existing refresh_token when server omits it by Jah-yee · Pull Request #2276 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: fix(auth): preserve existing refresh_token when server omits it by Jah-yee · Pull Request #2276 · modelcontextprotocol/python-sdk

X Title: fix(auth): preserve existing refresh_token when server omits it by Jah-yee · Pull Request #2276 · modelcontextprotocol/python-sdk

Description: Per RFC 6749 Section 6, issuing a new refresh token in the refresh response is optional. When the authorization server does not return a new refresh_token, the previously stored refresh_token is now preserved instead of being discarded. Fixes: #2270

Open Graph Description: Per RFC 6749 Section 6, issuing a new refresh token in the refresh response is optional. When the authorization server does not return a new refresh_token, the previously stored refresh_token is no...

X Description: Per RFC 6749 Section 6, issuing a new refresh token in the refresh response is optional. When the authorization server does not return a new refresh_token, the previously stored refresh_token is no...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/2276

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77ddcd5 fix(auth): preserve existing refresh_token when server omits it Mar 11, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/2276/commits/77ddcd5d4a426e3943ade11f6f5b871baf747e98
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