diff --git a/packages/opencode/src/auth/index.ts b/packages/opencode/src/auth/index.ts
index 883b9acc68c..aee2e43b44f 100644
--- a/packages/opencode/src/auth/index.ts
+++ b/packages/opencode/src/auth/index.ts
@@ -10,6 +10,7 @@ export namespace Auth {
       refresh: z.string(),
       access: z.string(),
       expires: z.number(),
+      has1MContext: z.boolean().optional(),
       enterpriseUrl: z.string().optional(),
     })
     .meta({ ref: "OAuth" })
diff --git a/packages/opencode/src/cli/cmd/auth.ts b/packages/opencode/src/cli/cmd/auth.ts
index ae24fbef599..5d2f8792a4c 100644
--- a/packages/opencode/src/cli/cmd/auth.ts
+++ b/packages/opencode/src/cli/cmd/auth.ts
@@ -204,12 +204,13 @@ export const AuthLoginCommand = cmd({
               if (result.type === "success") {
                 const saveProvider = result.provider ?? provider
                 if ("refresh" in result) {
-                  const { type: _, provider: __, refresh, access, expires, ...extraFields } = result
+                  const { type: _, provider: __, refresh, access, expires, has1MContext, ...extraFields } = result
                   await Auth.set(saveProvider, {
                     type: "oauth",
                     refresh,
                     access,
                     expires,
+                    has1MContext,
                     ...extraFields,
                   })
                 }
@@ -236,12 +237,13 @@ export const AuthLoginCommand = cmd({
               if (result.type === "success") {
                 const saveProvider = result.provider ?? provider
                 if ("refresh" in result) {
-                  const { type: _, provider: __, refresh, access, expires, ...extraFields } = result
+                  const { type: _, provider: __, refresh, access, expires, has1MContext, ...extraFields } = result
                   await Auth.set(saveProvider, {
                     type: "oauth",
                     refresh,
                     access,
                     expires,
+                    has1MContext,
                     ...extraFields,
                   })
                 }
diff --git a/packages/plugin/src/index.ts b/packages/plugin/src/index.ts
index 0601e587767..2c3a3fbcfdd 100644
--- a/packages/plugin/src/index.ts
+++ b/packages/plugin/src/index.ts
@@ -73,6 +73,7 @@ export interface Hooks {
                             refresh: string
                             access: string
                             expires: number
+                            has1MContext?: boolean
                           }
                         | { key: string }
                       ))
@@ -92,6 +93,7 @@ export interface Hooks {
                             refresh: string
                             access: string
                             expires: number
+                            has1MContext?: boolean
                           }
                         | { key: string }
                       ))