diff --git a/packages/opencode/script/publish.ts b/packages/opencode/script/publish.ts
index b5533fd1c..63d95d8fb 100755
--- a/packages/opencode/script/publish.ts
+++ b/packages/opencode/script/publish.ts
@@ -1,5 +1,6 @@
 #!/usr/bin/env bun
 import { $ } from "bun"
+import fs from "fs"
 import pkg from "../package.json"
 import { Script } from "@opencode-ai/script"
 import { fileURLToPath } from "url"
@@ -56,10 +57,16 @@ async function copyAssets(targetDir: string) {
   await $`cp -r ./bin ${targetDir}/bin`
   await $`cp -r ../../.opencode/skills ${targetDir}/skills`
   await $`cp ./script/postinstall.mjs ${targetDir}/postinstall.mjs`
-  // Bundle dbt-tools: copy its bin wrapper + built dist
+  // Bundle dbt-tools: copy its bin wrapper + only the files it actually needs.
+  // The full dist/ contains ~220 MB of .node native binaries from altimate-core
+  // that bun copies as transitive build artifacts but dbt-tools never loads.
   await $`mkdir -p ${targetDir}/dbt-tools/bin`
   await $`cp ../dbt-tools/bin/altimate-dbt ${targetDir}/dbt-tools/bin/altimate-dbt`
-  await $`cp -r ../dbt-tools/dist ${targetDir}/dbt-tools/dist`
+  await $`mkdir -p ${targetDir}/dbt-tools/dist`
+  await $`cp ../dbt-tools/dist/index.js ${targetDir}/dbt-tools/dist/`
+  if (fs.existsSync("../dbt-tools/dist/altimate_python_packages")) {
+    await $`cp -r ../dbt-tools/dist/altimate_python_packages ${targetDir}/dbt-tools/dist/`
+  }
   await Bun.file(`${targetDir}/LICENSE`).write(await Bun.file("../../LICENSE").text())
   await Bun.file(`${targetDir}/CHANGELOG.md`).write(await Bun.file("../../CHANGELOG.md").text())
 }
diff --git a/packages/opencode/test/branding/build-integrity.test.ts b/packages/opencode/test/branding/build-integrity.test.ts
index d1aee023d..e4977c21c 100644
--- a/packages/opencode/test/branding/build-integrity.test.ts
+++ b/packages/opencode/test/branding/build-integrity.test.ts
@@ -297,6 +297,15 @@ describe("Bundle Completeness", () => {
     expect(publishScript).toContain("bun run build")
   })
 
+  test("publish.ts copies only needed dbt-tools dist files (not .node binaries)", () => {
+    const publishScript = readFileSync(join(repoRoot, "packages/opencode/script/publish.ts"), "utf-8")
+    // Should copy index.js and altimate_python_packages selectively, not `cp -r dist`
+    expect(publishScript).toContain("dist/index.js")
+    expect(publishScript).toContain("altimate_python_packages")
+    // Should NOT do a blanket `cp -r ../dbt-tools/dist` (would include ~220MB of .node files)
+    expect(publishScript).not.toMatch(/cp -r \.\.\/dbt-tools\/dist [^/]/)
+  })
+
   test("postinstall.mjs sets up dbt-tools symlink", () => {
     const postinstall = readFileSync(join(repoRoot, "packages/opencode/script/postinstall.mjs"), "utf-8")
     expect(postinstall).toContain("setupDbtTools")