diff --git a/i18n/config/README.md b/i18n/config/README.md
new file mode 100644
index 00000000..2716caab
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+++ b/i18n/config/README.md
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+# Staged pipeline config
+
+**Nothing here is active.** `gt.config.json` sits here rather than at the repo root, where it would be live.
+
+| File | Moves to | When |
+| --- | --- | --- |
+| `gt.config.json` | repo root | If General Translation is chosen **and** `docs.json` has a `languages` array |
+
+Move it early and it fails immediately: it targets a `$.navigation.languages` path that does not exist yet.
+
+The CI workflow that consumes it lands separately (DF-831).
+
+## If Mintlify-native translations win
+
+**Delete this file.** Mintlify opens the translation PR itself — no config, no workflow, no third-party
+secret. See [`../03-tooling-evaluation.md`](../03-tooling-evaluation.md).
+
+## About `gt.config.json`
+
+Adapted from [`mintlify/docs`](https://github.com/mintlify/docs)' own config — Mintlify localize their
+documentation with this tool, on this stack. Differences from theirs:
+
+- **`reference/` and `changelogs.mdx` excluded.** Wave 2 and never, respectively
+  ([scope](../02-scope-and-preservation-spec.md#waves)).
+- **No OpenAPI localization.** They localize `*.openapi.json` with a JSON preset; Mixpanel's specs are
+  `openapi/*.yaml`. Deferred with wave 2 — needs verification that the YAML bucket handles it.
+- **`snippets/` excluded.** Checked: every exported string is a proper noun already on the do-not-translate
+  list, so there is nothing to localize.
+- **`locales: ["en", "ko"]`** rather than their four.
+
+Retained deliberately — these are the settings that solve the hard problems:
+
+| Setting | Solves |
+| --- | --- |
+| `experimentalAddHeaderAnchorIds: "mintlify"` | The 710 fragment links |
+| `experimentalLocalizeStaticUrls` + `docsUrlPattern` | 2,721 internal links → `/ko/...` |
+| `jsonSchema.composite["$.navigation.languages"]` | All of DF-824, automatically |
+| `generateRedirects` | Keeps the 881 existing redirects working per locale |
+| `experimentalHideDefaultLocale` | English stays at the root, unmoved |
diff --git a/i18n/config/gt.config.json b/i18n/config/gt.config.json
new file mode 100644
index 00000000..7b6691d6
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+++ b/i18n/config/gt.config.json
@@ -0,0 +1,54 @@
+{
+  "$schema": "https://assets.gtx.dev/config-schema.json",
+  "_comment": "STAGED — not active. Move to the repo root only after the docs.json languages array exists (see i18n/nav/README.md) and GT is chosen over Mintlify-native translations (see i18n/03-tooling-evaluation.md). Adapted from mintlify/docs' own gt.config.json.",
+
+  "defaultLocale": "en",
+  "locales": ["en", "ko"],
+
+  "files": {
+    "mdx": {
+      "include": ["./docs/**/*.mdx", "./guides/**/*.mdx"],
+      "exclude": [
+        "./[locales]/**/*.mdx",
+        "./reference/**/*.mdx",
+        "./changelogs.mdx",
+        "./snippets/**/*.mdx"
+      ],
+      "transform": {
+        "match": "^(.*)$",
+        "replace": "{locale}/$1"
+      }
+    },
+    "json": {
+      "include": ["./docs.json"]
+    }
+  },
+
+  "options": {
+    "jsonSchema": {
+      "./docs.json": {
+        "composite": {
+          "$.navigation.languages": {
+            "type": "array",
+            "key": "$.language",
+            "include": ["$..group", "$..tab", "$..item", "$..anchor", "$..dropdown"],
+            "transform": {
+              "$..pages[*]": { "match": "^(.*)$", "replace": "{locale}/$1" },
+              "$..root": { "match": "^(.*)$", "replace": "{locale}/$1" }
+            },
+            "experimentalSort": "locales"
+          }
+        }
+      }
+    },
+
+    "docsUrlPattern": "/[locale]",
+    "generateRedirects": "./docs.json",
+
+    "experimentalLocalizeStaticUrls": true,
+    "experimentalHideDefaultLocale": true,
+    "docsHideDefaultLocaleImport": true,
+    "experimentalAddHeaderAnchorIds": "mintlify",
+    "experimentalClearLocaleDirs": true
+  }
+}