fix(config): accept env alias for native MCP servers

packages/opencode/src/config/config.ts

@@ -60,6 +60,21 @@ function mergeConfigConcatArrays(target: Info, source: Info): Info {
 function normalizeLoadedConfig(data: unknown, source: string) {
   if (!isRecord(data)) return data
   const copy = { ...data }
+  if (isRecord(copy.mcp)) {
+    copy.mcp = Object.fromEntries(
+      Object.entries(copy.mcp).map(([name, server]) => {
+        if (!isRecord(server) || !isRecord(server.env)) return [name, server]
+        const { env, ...rest } = server
+        return [
+          name,
+          {
+            ...rest,
+            ...(!("environment" in server) && { environment: env }),
+          },
+        ]
+      }),
+    )
+  }
   const hadLegacy = "theme" in copy || "keybinds" in copy || "tui" in copy
   if (!hadLegacy) return copy
   delete copy.theme

packages/opencode/src/config/mcp.ts

@@ -21,6 +21,9 @@ export class Local extends Schema.Class<Local>("McpLocalConfig")({
   environment: Schema.optional(Schema.Record(Schema.String, Schema.String)).annotate({
     description: "Environment variables to set when running the MCP server",
   }),
+  env: Schema.optional(Schema.Record(Schema.String, Schema.String)).annotate({
+    description: "@deprecated Use environment. Alias for environment variables to set when running the MCP server.",
+  }),
   enabled: Schema.optional(Schema.Boolean).annotate({
     description: "Enable or disable the MCP server on startup",
   }),

packages/opencode/test/config/config.test.ts

@@ -147,6 +147,41 @@ test("loads JSON config file", async () => {
   })
 })
 
+test("loads native MCP env alias as environment", async () => {
+  await using tmp = await tmpdir({
+    init: async (dir) => {
+      await writeConfig(dir, {
+        $schema: "https://opencode.ai/config.json",
+        mcp: {
+          postgres: {
+            type: "local",
+            command: ["cmd.exe", "/c", "npx", "-y", "@yawlabs/postgres-mcp@latest"],
+            env: {
+              DATABASE_URL: "postgres://postgres:secret@localhost:5432/demo1",
+              ALLOW_WRITES: "1",
+            },
+          },
+        },
+      })
+    },
+  })
+
+  await Instance.provide({
+    directory: tmp.path,
+    fn: async () => {
+      const config = await load()
+      expect(config.mcp?.postgres).toEqual({
+        type: "local",
+        command: ["cmd.exe", "/c", "npx", "-y", "@yawlabs/postgres-mcp@latest"],
+        environment: {
+          DATABASE_URL: "postgres://postgres:secret@localhost:5432/demo1",
+          ALLOW_WRITES: "1",
+        },
+      })
+    },
+  })
+})
+
 test("loads Claude Code MCP servers from home and project config", async () => {
   await writeClaudeConfig(path.join(Global.Path.home, ".claude.json"), {
     mcpServers: {