diff --git a/.bun-version b/.bun-version
new file mode 100644
index 00000000..085c0f26
--- /dev/null
+++ b/.bun-version
@@ -0,0 +1 @@
+1.3.14
diff --git a/.changeset/standalone-oxfmt.md b/.changeset/standalone-oxfmt.md
new file mode 100644
index 00000000..19a70187
--- /dev/null
+++ b/.changeset/standalone-oxfmt.md
@@ -0,0 +1,7 @@
+---
+'@tanstack/create': minor
+---
+
+Add Oxfmt as a standalone formatter toolchain for React and Solid projects.
+
+Show replaced package script commands before adding integrations to existing projects.
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index ca506976..5b54665f 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -57,6 +57,12 @@ jobs:
         uses: nrwl/nx-set-shas@3e9ad7370203c1e93d109be57f3b72eb0eb511b1 # v4.4.0
         with:
           main-branch-name: main
+      - name: Setup Bun for E2E
+        uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2.2.0
+        with:
+          bun-version-file: .bun-version
+          no-cache: true
+          token: ''
       - name: Install Playwright Chrome
         run: pnpm --filter @tanstack/cli exec playwright install --with-deps chrome
       - name: Test E2E Blocking
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 074157f1..3837c5a3 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -35,6 +35,12 @@ jobs:
         run: pnpm build
       - name: Test Unit
         run: pnpm test:unit
+      - name: Setup Bun for E2E
+        uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2.2.0
+        with:
+          bun-version-file: .bun-version
+          no-cache: true
+          token: ''
       - name: Install Playwright Chrome
         run: pnpm --filter @tanstack/cli exec playwright install --with-deps chrome
       - name: E2E Blocking
diff --git a/packages/cli/tests-e2e/oxfmt-smoke.spec.ts b/packages/cli/tests-e2e/oxfmt-smoke.spec.ts
new file mode 100644
index 00000000..cb87ca3c
--- /dev/null
+++ b/packages/cli/tests-e2e/oxfmt-smoke.spec.ts
@@ -0,0 +1,55 @@
+import { execFile } from 'node:child_process'
+import { appendFile, readFile } from 'node:fs/promises'
+import { join } from 'node:path'
+import { promisify } from 'node:util'
+import { expect, test } from '@playwright/test'
+import { createAppFixture } from './helpers'
+
+const runFile = promisify(execFile)
+for (const framework of ['react', 'solid'] as const) {
+  for (const mode of ['standard', 'blank', 'existing'] as const) {
+    test(`@blocking formats a ${mode} ${framework} app with standalone Oxfmt`, async () => {
+      const packageManager =
+        mode === 'blank'
+          ? 'npm'
+          : mode === 'existing' && framework === 'react'
+            ? 'bun'
+            : 'pnpm'
+      const fixture = await createAppFixture({
+        appName: `${framework}-oxfmt-${mode}`,
+        framework,
+        bundler: mode === 'blank' ? 'rsbuild' : 'vite',
+        blank: mode !== 'standard',
+        ...(mode === 'existing'
+          ? { postCreateAddOns: ['oxfmt'] }
+          : { toolchain: 'oxfmt' }),
+        packageManager,
+        skipDevServer: true,
+        runQualityGatesChecks: true,
+      })
+      const run = (script: string) =>
+        runFile(packageManager, ['run', script], {
+          cwd: fixture.appDir,
+          timeout: 60_000,
+        })
+      try {
+        const manifest = JSON.parse(
+          await readFile(join(fixture.appDir, 'package.json'), 'utf8'),
+        )
+        expect(manifest.devDependencies.oxfmt).toBe('^0.77.0')
+        expect(manifest.devDependencies.eslint).toBeUndefined()
+        expect(manifest.devDependencies['@biomejs/biome']).toBeUndefined()
+        expect(manifest.scripts.lint).toBeUndefined()
+        await run('format')
+        await run('check')
+        await appendFile(join(fixture.appDir, 'src/routes/index.tsx'), '\n\n\n')
+        await expect(run('check')).rejects.toMatchObject({ code: 1 })
+        await run('format')
+        await run('check')
+      } finally {
+        await fixture.stop()
+        await fixture.cleanup()
+      }
+    })
+  }
+}
diff --git a/packages/create/src/add-to-app.ts b/packages/create/src/add-to-app.ts
index 10feaf91..f7ea2eb5 100644
--- a/packages/create/src/add-to-app.ts
+++ b/packages/create/src/add-to-app.ts
@@ -262,10 +262,20 @@ export async function writeFiles(
 
   const overwrittenFiles: Array<string> = []
   const changedFiles: Array<string> = []
+  const replacedScripts: Array<string> = []
   for (const relativeFile of Object.keys(relativeOutputFiles)) {
     if (Object.prototype.hasOwnProperty.call(currentFiles, relativeFile)) {
       if (currentFiles[relativeFile] !== relativeOutputFiles[relativeFile]) {
         overwrittenFiles.push(relativeFile)
+        if (basename(relativeFile) === 'package.json') {
+          const currentScripts = JSON.parse(currentFiles[relativeFile]).scripts ?? {}
+          const generatedScripts = JSON.parse(relativeOutputFiles[relativeFile]).scripts ?? {}
+          for (const [name, command] of Object.entries(generatedScripts)) {
+            if (Object.prototype.hasOwnProperty.call(currentScripts, name) && currentScripts[name] !== command) {
+              replacedScripts.push(`${relativeFile} scripts[${JSON.stringify(name)}]: ${JSON.stringify(currentScripts[name])} -> ${JSON.stringify(command)}`)
+            }
+          }
+        }
       }
     } else {
       changedFiles.push(relativeFile)
@@ -276,6 +286,13 @@ export async function writeFiles(
     .map(toRelativePath)
     .filter((file) => environment.exists(resolve(cwd, file)))
 
+  if (replacedScripts.length) {
+    environment.warn(
+      'The following package scripts will be replaced',
+      replacedScripts.join('\n'),
+    )
+  }
+
   if (!forced && (overwrittenFiles.length || deletedFiles.length)) {
     environment.warn(
       'The following files will be changed or deleted',
diff --git a/packages/create/src/frameworks/react/toolchains/oxfmt/README.md.ejs b/packages/create/src/frameworks/react/toolchains/oxfmt/README.md.ejs
new file mode 100644
index 00000000..bf6c5e26
--- /dev/null
+++ b/packages/create/src/frameworks/react/toolchains/oxfmt/README.md.ejs
@@ -0,0 +1,7 @@
+## Formatting
+
+Run `<%= getPackageManagerRunScript('format') %>` to format files and
+`<%= getPackageManagerRunScript('check') %>` to check formatting without changing them.
+
+Oxfmt is configured in `.oxfmtrc.json`. This toolchain does not add a linter.
+Oxfmt requires Node 20.19 or newer on the Node 20 line, or Node 22.12 or newer.
diff --git a/packages/create/src/frameworks/react/toolchains/oxfmt/assets/_dot_oxfmtrc.json b/packages/create/src/frameworks/react/toolchains/oxfmt/assets/_dot_oxfmtrc.json
new file mode 100644
index 00000000..2de56be0
--- /dev/null
+++ b/packages/create/src/frameworks/react/toolchains/oxfmt/assets/_dot_oxfmtrc.json
@@ -0,0 +1,22 @@
+{
+  "semi": false,
+  "singleQuote": true,
+  "trailingComma": "all",
+  "printWidth": 80,
+  "sortPackageJson": false,
+  "ignorePatterns": [
+    "node_modules",
+    "dist",
+    "build",
+    ".output",
+    ".tanstack",
+    "coverage",
+    "src/routeTree.gen.ts",
+    "package-lock.json",
+    "pnpm-lock.yaml",
+    "yarn.lock",
+    "bun.lock",
+    "bun.lockb",
+    "deno.lock"
+  ]
+}
diff --git a/packages/create/src/frameworks/react/toolchains/oxfmt/info.json b/packages/create/src/frameworks/react/toolchains/oxfmt/info.json
new file mode 100644
index 00000000..a72b7f9c
--- /dev/null
+++ b/packages/create/src/frameworks/react/toolchains/oxfmt/info.json
@@ -0,0 +1,15 @@
+{
+  "name": "Oxfmt",
+  "description": "Format code without adding a linter.",
+  "phase": "setup",
+  "type": "toolchain",
+  "category": "tooling",
+  "exclusive": [
+    "linter"
+  ],
+  "modes": [
+    "code-router",
+    "file-router"
+  ],
+  "link": "https://oxc.rs/docs/guide/usage/formatter"
+}
diff --git a/packages/create/src/frameworks/react/toolchains/oxfmt/package.json b/packages/create/src/frameworks/react/toolchains/oxfmt/package.json
new file mode 100644
index 00000000..41deb0d6
--- /dev/null
+++ b/packages/create/src/frameworks/react/toolchains/oxfmt/package.json
@@ -0,0 +1,9 @@
+{
+  "scripts": {
+    "format": "oxfmt",
+    "check": "oxfmt --check"
+  },
+  "devDependencies": {
+    "oxfmt": "^0.77.0"
+  }
+}
diff --git a/packages/create/src/frameworks/solid/toolchains/oxfmt/README.md.ejs b/packages/create/src/frameworks/solid/toolchains/oxfmt/README.md.ejs
new file mode 100644
index 00000000..bf6c5e26
--- /dev/null
+++ b/packages/create/src/frameworks/solid/toolchains/oxfmt/README.md.ejs
@@ -0,0 +1,7 @@
+## Formatting
+
+Run `<%= getPackageManagerRunScript('format') %>` to format files and
+`<%= getPackageManagerRunScript('check') %>` to check formatting without changing them.
+
+Oxfmt is configured in `.oxfmtrc.json`. This toolchain does not add a linter.
+Oxfmt requires Node 20.19 or newer on the Node 20 line, or Node 22.12 or newer.
diff --git a/packages/create/src/frameworks/solid/toolchains/oxfmt/assets/_dot_oxfmtrc.json b/packages/create/src/frameworks/solid/toolchains/oxfmt/assets/_dot_oxfmtrc.json
new file mode 100644
index 00000000..2de56be0
--- /dev/null
+++ b/packages/create/src/frameworks/solid/toolchains/oxfmt/assets/_dot_oxfmtrc.json
@@ -0,0 +1,22 @@
+{
+  "semi": false,
+  "singleQuote": true,
+  "trailingComma": "all",
+  "printWidth": 80,
+  "sortPackageJson": false,
+  "ignorePatterns": [
+    "node_modules",
+    "dist",
+    "build",
+    ".output",
+    ".tanstack",
+    "coverage",
+    "src/routeTree.gen.ts",
+    "package-lock.json",
+    "pnpm-lock.yaml",
+    "yarn.lock",
+    "bun.lock",
+    "bun.lockb",
+    "deno.lock"
+  ]
+}
diff --git a/packages/create/src/frameworks/solid/toolchains/oxfmt/info.json b/packages/create/src/frameworks/solid/toolchains/oxfmt/info.json
new file mode 100644
index 00000000..a72b7f9c
--- /dev/null
+++ b/packages/create/src/frameworks/solid/toolchains/oxfmt/info.json
@@ -0,0 +1,15 @@
+{
+  "name": "Oxfmt",
+  "description": "Format code without adding a linter.",
+  "phase": "setup",
+  "type": "toolchain",
+  "category": "tooling",
+  "exclusive": [
+    "linter"
+  ],
+  "modes": [
+    "code-router",
+    "file-router"
+  ],
+  "link": "https://oxc.rs/docs/guide/usage/formatter"
+}
diff --git a/packages/create/src/frameworks/solid/toolchains/oxfmt/package.json b/packages/create/src/frameworks/solid/toolchains/oxfmt/package.json
new file mode 100644
index 00000000..41deb0d6
--- /dev/null
+++ b/packages/create/src/frameworks/solid/toolchains/oxfmt/package.json
@@ -0,0 +1,9 @@
+{
+  "scripts": {
+    "format": "oxfmt",
+    "check": "oxfmt --check"
+  },
+  "devDependencies": {
+    "oxfmt": "^0.77.0"
+  }
+}
diff --git a/packages/create/tests/script-replacements.test.ts b/packages/create/tests/script-replacements.test.ts
new file mode 100644
index 00000000..8407fae6
--- /dev/null
+++ b/packages/create/tests/script-replacements.test.ts
@@ -0,0 +1,105 @@
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+
+import { createDefaultEnvironment } from '../src/environment.js'
+import { writeFiles } from '../src/add-to-app.js'
+
+let directory: string | undefined
+
+async function fixture() {
+  directory = await mkdtemp(join(tmpdir(), 'tanstack-script-replacement-'))
+  const manifest = {
+    name: 'fixture',
+    scripts: {
+      check: 'tsc --noEmit && vitest run',
+      format: 'prettier --write .',
+      build: 'vite build',
+    },
+  }
+  const original = JSON.stringify(manifest, null, 2)
+  await writeFile(join(directory, 'package.json'), original)
+  const environment = createDefaultEnvironment()
+  environment.warn = vi.fn()
+  environment.confirm = vi.fn(async () => false)
+  const output = {
+    files: {
+      [join(directory, 'package.json')]: JSON.stringify({
+        scripts: { check: 'oxfmt --check', format: 'oxfmt' },
+      }),
+    },
+    deletedFiles: [],
+  }
+  return { cwd: directory, environment, output, original }
+}
+
+afterEach(async () => {
+  if (directory) await rm(directory, { recursive: true, force: true })
+  directory = undefined
+})
+
+describe('existing package script replacements', () => {
+  it('shows each old and new command before confirmation and preserves the file on cancellation', async () => {
+    const { cwd, environment, output, original } = await fixture()
+    environment.confirm = vi.fn(async () => {
+      expect(environment.warn).toHaveBeenCalledWith(
+        'The following package scripts will be replaced',
+        'package.json scripts["check"]: "tsc --noEmit && vitest run" -> "oxfmt --check"\npackage.json scripts["format"]: "prettier --write ." -> "oxfmt"',
+      )
+      expect(await readFile(join(cwd, 'package.json'), 'utf8')).toBe(original)
+      return false
+    })
+    await expect(writeFiles(environment, cwd, output, false)).rejects.toThrow(
+      'User cancelled',
+    )
+    expect(await readFile(join(cwd, 'package.json'), 'utf8')).toBe(original)
+  })
+
+  it('replaces approved commands and retains unrelated scripts', async () => {
+    const { cwd, environment, output } = await fixture()
+    environment.confirm = vi.fn(async () => true)
+    await writeFiles(environment, cwd, output, false)
+    expect(
+      JSON.parse(await readFile(join(cwd, 'package.json'), 'utf8')).scripts,
+    ).toEqual({
+      check: 'oxfmt --check',
+      format: 'oxfmt',
+      build: 'vite build',
+    })
+  })
+
+  it('does not call an identical command or a new script a replacement', async () => {
+    const { cwd, environment, output } = await fixture()
+    output.files[join(cwd, 'package.json')] = JSON.stringify({
+      scripts: { check: 'tsc --noEmit && vitest run', test: 'vitest run' },
+    })
+    environment.confirm = vi.fn(async () => true)
+    await writeFiles(environment, cwd, output, false)
+    expect(
+      vi.mocked(environment.warn).mock.calls.map(([message]) => message),
+    ).not.toContain('The following package scripts will be replaced')
+    expect(
+      JSON.parse(await readFile(join(cwd, 'package.json'), 'utf8')).scripts,
+    ).toEqual({
+      check: 'tsc --noEmit && vitest run',
+      format: 'prettier --write .',
+      build: 'vite build',
+      test: 'vitest run',
+    })
+  })
+
+  it('still reports replacements when force skips confirmation', async () => {
+    const { cwd, environment, output } = await fixture()
+    await writeFiles(environment, cwd, output, true)
+    expect(environment.confirm).not.toHaveBeenCalled()
+    expect(environment.warn).toHaveBeenCalledWith(
+      'The following package scripts will be replaced',
+      expect.stringContaining('tsc --noEmit && vitest run'),
+    )
+    expect(
+      JSON.parse(await readFile(join(cwd, 'package.json'), 'utf8')).scripts
+        .build,
+    ).toBe('vite build')
+  })
+})