Installs (or replaces) a per-subject auth override on an MCP server. Use this when a specific user or service account should authenticate against the upstream MCP server with credentials different from the server’s default auth_data. Permissions: callers with MANAGE_MCP_SERVER (MCP managers) may set the override for any subject; other callers may only set their own override.
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Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
MCP server id (the id returned by GET /v1/mcp, not the name).
"mcp-01HXYZ..."
Per-subject credential override input.
Principal id for this auth override (user id, virtual account id, etc.).
1Principal type for this auth override.
user, virtualaccount Override authentication with a static header value.
Auth override saved.