Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SDKArea: what it touches
Internal ChangesKind: in v2.1.248,
Internal ChangesSection of the release
What
Two messages exchanged between the CLI and an SDK host gained internal documentation: one relays JSON-RPC to an MCP server the SDK hosts, the other asks the host for a fresh OAuth access token after a 401 when the CLI has no refresh token of its own. Behaviour is unchanged.
Evidence
@internal Request from the CLI subprocess to the SDK host for a fresh OAuth access token after a 401 with no local refresh token.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
