diff --git a/.chronus/changes/cleanup-npm-usage-2026-07-20-13-49-00.md b/.chronus/changes/cleanup-npm-usage-2026-07-20-13-49-00.md
new file mode 100644
index 0000000000..dad6204f4a
--- /dev/null
+++ b/.chronus/changes/cleanup-npm-usage-2026-07-20-13-49-00.md
@@ -0,0 +1,14 @@
+---
+changeKind: internal
+packages:
+  - "@azure-tools/typespec-autorest"
+  - "@azure-tools/typespec-autorest-canonical"
+  - "@azure-tools/typespec-azure-portal-core"
+  - "@azure-tools/typespec-azure-resource-manager"
+  - "@azure-tools/typespec-client-generator-core"
+  - "@azure-tools/typespec-go"
+  - "@azure-tools/typespec-java"
+  - "@azure-tools/typespec-ts"
+---
+
+Replace `npm`/`npx` usage in build and test scripts with `pnpm` equivalents to stop `npm warn Unknown env config` warnings when running inside the pnpm workspace.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 01f7ed7e8e..9791b6e8c3 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -204,7 +204,7 @@ The package also needs a `vitest.config.ts` — the root vitest workspace config
 ```json
 {
   "scripts": {
-    "test": "npm run test:vitest && npm run test:extra",
+    "test": "pnpm test:vitest && pnpm test:extra",
     "test:vitest": "vitest run",
     "test:extra": "dotnet test"
   }
@@ -287,12 +287,12 @@ Do the following to publish a new release:
    main branch (both typespec-azure and core should point to main).
 
 4. Generate release notes for TypeSpec once the full list of changes are in.
-   1. In your fork of the core (typespec) repo, run `npx chronus changelog --policy typespec > out.md`.
+   1. In your fork of the core (typespec) repo, run `pnpm exec chronus changelog --policy typespec > out.md`.
    2. Create a new entry in `./core/website/src/content/docs/docs/release-notes` for this release and paste the contents of `out.md` into the new file. Reorganize the file to have the following sections in order: _Breaking Changes_, _Deprecations_, _Features_, and _Bug Fixes_. Skip the section if there are no entries in it. Also add a blurb above these sections for any especially notable updates.
       Example PR: https://github.com/microsoft/typespec/pull/4102
 
 5. Generate release notes for TypeSpec Azure once the full list of changes are in.
-   1. In your fork of the typespec-azure repo, run `npx chronus changelog --policy typespec-azure > out.md`.
+   1. In your fork of the typespec-azure repo, run `pnpm exec chronus changelog --policy typespec-azure > out.md`.
    2. Create a new entry in `./website/src/content/docs/docs/release-notes` for this release and paste the contents of `out.md` into the new file. Reorganize the file to have the following sections in order: _Breaking Changes_, _Deprecations_, _Features_, and _Bug Fixes_. Skip the section if there are no entries in it. Also add a blurb above these sections for any especially notable updates.
       Example PR: https://github.com/Azure/typespec-azure/pull/1306
 
diff --git a/README.md b/README.md
index b23fc4dad6..ff695d26e9 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ For TypeSpec language documentation, see https://typespec.io/docs.
 If you are team working on Azure, see TypeSpec Azure development documentation https://azure.github.io/typespec-azure. You should pre-install as well `@azure-tools/typespec-azure-core` to define Azure resources, and `@azure-tools/typespec-autorest` to export in Swagger:
 
 ```
-npm install @typespec/rest @typespec/openapi3 @azure-tools/typespec-azure-core @azure-tools/typespec-autorest
+pnpm add @typespec/rest @typespec/openapi3 @azure-tools/typespec-azure-core @azure-tools/typespec-autorest
 ```
 
 > If you plan to use the output openapi with autorest or any of the azure sdk tooling _you should use typespec-autorest_, the openapi3 emitter is not going to have any of the ms extensions (pageable, lro, client name, etc.) and so it will be losing information.
diff --git a/package.json b/package.json
index 3c1a320f22..0c384d182a 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,6 @@
     "lint:extra": "pnpm run-all lint:extra",
     "lint:fix": "oxlint . --fix",
     "pack:all": "chronus pack --pack-destination ./temp/artifacts",
-    "preinstall": "npx only-allow pnpm",
     "prepare-publish": "node ./eng/scripts/prepare-publish.js",
     "purge": "rimraf --glob \"packages/*/node_modules/\" --glob \"core/packages/*/node_modules/\"",
     "regen-docs": "pnpm run-all regen-docs",
diff --git a/packages/samples/README.md b/packages/samples/README.md
index b58e3f6a8c..0b71b469d2 100644
--- a/packages/samples/README.md
+++ b/packages/samples/README.md
@@ -1,10 +1,10 @@
 # Typespec Azure Samples
 
 ```bash
-npm run test    # Check Samples match snapshots
-npm run test:ci # run test same as CI
+pnpm test    # Check Samples match snapshots
+pnpm test:ci # run test same as CI
 
-npm run test:regen -- -g "<sample-name>" # Regen of this name
+pnpm test:regen -- -g "<sample-name>" # Regen of this name
 
-npm run test:regen # Regen all samples.
+pnpm test:regen # Regen all samples.
 ```
diff --git a/packages/typespec-autorest-canonical/package.json b/packages/typespec-autorest-canonical/package.json
index 7e5999c159..ef9d4a9e01 100644
--- a/packages/typespec-autorest-canonical/package.json
+++ b/packages/typespec-autorest-canonical/package.json
@@ -35,7 +35,7 @@
   },
   "scripts": {
     "clean": "rimraf ./dist ./temp",
-    "build": " tsc -p tsconfig.build.json && npm run lint-typespec-library",
+    "build": " tsc -p tsconfig.build.json && pnpm lint-typespec-library",
     "watch": "tsc -p tsconfig.build.json --watch",
     "lint-typespec-library": "tsp compile . --warn-as-error --import @typespec/library-linter --no-emit",
     "test": "vitest run",
diff --git a/packages/typespec-autorest/package.json b/packages/typespec-autorest/package.json
index 8368c14247..0944cad6b1 100644
--- a/packages/typespec-autorest/package.json
+++ b/packages/typespec-autorest/package.json
@@ -36,7 +36,7 @@
   },
   "scripts": {
     "clean": "rimraf ./dist ./temp",
-    "build": "npm run gen-extern-signature && npm run regen-autorest-openapi-schema && npm run regen-service-yaml-schema && tsc -p tsconfig.build.json && npm run lint-typespec-library",
+    "build": "pnpm gen-extern-signature && pnpm regen-autorest-openapi-schema && pnpm regen-service-yaml-schema && tsc -p tsconfig.build.json && pnpm lint-typespec-library",
     "watch": "tsc -p tsconfig.build.json --watch",
     "gen-extern-signature": "tspd --enable-experimental gen-extern-signature .",
     "lint-typespec-library": "tsp compile . --warn-as-error --import @typespec/library-linter --no-emit",
diff --git a/packages/typespec-azure-playground-website/README.md b/packages/typespec-azure-playground-website/README.md
index b08c34274d..13c9aa2fd9 100644
--- a/packages/typespec-azure-playground-website/README.md
+++ b/packages/typespec-azure-playground-website/README.md
@@ -4,9 +4,9 @@ A self contained website for the TypeSpec Azure Playground.
 
 ## Use
 
-- `npm start` to start in dev mode
-- `npm run preview` to build and preview prod mode
-- `npm run build` to build for production
+- `pnpm start` to start in dev mode
+- `pnpm preview` to build and preview prod mode
+- `pnpm build` to build for production
 
 ## Configuration
 
diff --git a/packages/typespec-azure-playground-website/package.json b/packages/typespec-azure-playground-website/package.json
index a9191e9eb8..79ce265b77 100644
--- a/packages/typespec-azure-playground-website/package.json
+++ b/packages/typespec-azure-playground-website/package.json
@@ -34,9 +34,9 @@
   "scripts": {
     "clean": "rimraf ./dist ./dist-dev ./temp ./samples/dist",
     "build-samples": "tsx ./samples/build.ts",
-    "build": "npm run build-samples && tsc -p tsconfig.build.json && vite build 2>&1",
+    "build": "pnpm build-samples && tsc -p tsconfig.build.json && vite build 2>&1",
     "preview": "pnpm build && vite preview",
-    "start": "npm run -s watch",
+    "start": "pnpm -s watch",
     "test": "vitest run",
     "test:ci": "vitest run",
     "test:watch": "vitest -w",
diff --git a/packages/typespec-azure-portal-core/package.json b/packages/typespec-azure-portal-core/package.json
index 26176168b3..ca80eb6209 100644
--- a/packages/typespec-azure-portal-core/package.json
+++ b/packages/typespec-azure-portal-core/package.json
@@ -8,7 +8,7 @@
   "readme": "https://github.com/Azure/typespec-azure/blob/main/packages/typespec-azure-portal-core/README.md",
   "scripts": {
     "clean": "rimraf ./dist ./temp",
-    "build": "tsc -p tsconfig.build.json && npm run lint-typespec-library",
+    "build": "tsc -p tsconfig.build.json && pnpm lint-typespec-library",
     "watch": "tsc -p tsconfig.build.json --watch",
     "lint-typespec-library": "tsp compile . --warn-as-error --import @typespec/library-linter --no-emit",
     "test": "vitest run",
diff --git a/packages/typespec-azure-resource-manager/package.json b/packages/typespec-azure-resource-manager/package.json
index b67b410f18..26a9f4cbd1 100644
--- a/packages/typespec-azure-resource-manager/package.json
+++ b/packages/typespec-azure-resource-manager/package.json
@@ -39,7 +39,7 @@
   },
   "scripts": {
     "clean": "rimraf ./dist ./temp",
-    "build": "npm run gen-extern-signature && tsc -p tsconfig.build.json && npm run lint-typespec-library",
+    "build": "pnpm gen-extern-signature && tsc -p tsconfig.build.json && pnpm lint-typespec-library",
     "watch": "tsc -p tsconfig.build.json --watch",
     "gen-extern-signature": "tspd --enable-experimental gen-extern-signature .",
     "lint-typespec-library": "tsp compile . --warn-as-error --import @typespec/library-linter --no-emit",
diff --git a/packages/typespec-client-generator-core/package.json b/packages/typespec-client-generator-core/package.json
index fcb8103803..785134e59c 100644
--- a/packages/typespec-client-generator-core/package.json
+++ b/packages/typespec-client-generator-core/package.json
@@ -37,7 +37,7 @@
   },
   "scripts": {
     "clean": "rimraf ./dist ./temp",
-    "build": "npm run gen-extern-signature && tsc -p tsconfig.build.json && npm run lint-typespec-library",
+    "build": "pnpm gen-extern-signature && tsc -p tsconfig.build.json && pnpm lint-typespec-library",
     "watch": "tsc -p tsconfig.build.json --watch",
     "gen-extern-signature": "tspd --enable-experimental gen-extern-signature .",
     "lint-typespec-library": "tsp compile . --warn-as-error --import @typespec/library-linter --no-emit",
diff --git a/packages/typespec-go/.scripts/spector.js b/packages/typespec-go/.scripts/spector.js
index a3e8c67eed..441bbe8e21 100644
--- a/packages/typespec-go/.scripts/spector.js
+++ b/packages/typespec-go/.scripts/spector.js
@@ -34,6 +34,6 @@ if (switches.length === 0) {
   throw new Error("missing arg: [--start] [--stop]");
 }
 
-const cmdLine = "npx tsp-spector " + switches.join(" ");
+const cmdLine = "pnpm exec tsp-spector " + switches.join(" ");
 console.log(cmdLine);
 execSync(cmdLine, execSyncOptions);
diff --git a/packages/typespec-go/.scripts/test-update.js b/packages/typespec-go/.scripts/test-update.js
index 2743650737..4ef10b19f9 100644
--- a/packages/typespec-go/.scripts/test-update.js
+++ b/packages/typespec-go/.scripts/test-update.js
@@ -22,7 +22,7 @@ const genSuites = resolve(scriptDir, "..", "test", "unittest", "gen-scenario-sui
 execSync(`node "${genSuites}"`, { stdio: "inherit" });
 
 const extra = process.argv.slice(2).join(" ");
-const cmdLine = `npx vitest run --pass-with-no-tests ${extra}`.trim();
+const cmdLine = `pnpm exec vitest run --pass-with-no-tests ${extra}`.trim();
 console.log(cmdLine);
 execSync(cmdLine, {
   stdio: "inherit",
diff --git a/packages/typespec-go/docs/development.md b/packages/typespec-go/docs/development.md
index 561785ca94..7d3e6c29b5 100644
--- a/packages/typespec-go/docs/development.md
+++ b/packages/typespec-go/docs/development.md
@@ -190,4 +190,4 @@ Before you do, make sure to:
 
 1. Format your code (`pnpm format` from the repo root, or check with `pnpm format:check`).
 2. Rebuild and regenerate everything so the committed fixtures reflect your change.
-3. Add a changelog entry with [Chronus](https://github.com/microsoft/chronus) by running `npx chronus add` from the repo root and following the prompts. This creates a change file under `.chronus/changes/` that you should commit with your PR.
+3. Add a changelog entry with [Chronus](https://github.com/microsoft/chronus) by running `pnpm exec chronus add` from the repo root and following the prompts. This creates a change file under `.chronus/changes/` that you should commit with your PR.
diff --git a/packages/typespec-java/package.json b/packages/typespec-java/package.json
index 757b624a70..b8aa438970 100644
--- a/packages/typespec-java/package.json
+++ b/packages/typespec-java/package.json
@@ -29,7 +29,7 @@
   },
   "scripts": {
     "clean": "rimraf ./dist ./temp ./generator",
-    "build": "npm run build:emitter && npm run build:generator",
+    "build": "pnpm build:emitter && pnpm build:generator",
     "build:emitter": "pwsh -NoProfile -File Copy-Sources.ps1 && tsc -p .",
     "build:generator": "pwsh -NoProfile -File Build-Generator.ps1",
     "watch": "tsc -p . --watch",
diff --git a/packages/typespec-ts/package.json b/packages/typespec-ts/package.json
index fcdcd05733..3b4c3566d4 100644
--- a/packages/typespec-ts/package.json
+++ b/packages/typespec-ts/package.json
@@ -19,24 +19,24 @@
     "test-next:coverage": "vitest run --project test-next --coverage",
     "clean": "rimraf ./dist ./typespec-output",
     "build": "tsc -p .",
-    "test": "npm run test-next && npm run unit-test && npm run integration-test-ci",
+    "test": "pnpm test-next && pnpm unit-test && pnpm integration-test-ci",
     "lint": "oxlint . --deny-warnings",
     "lint:fix": "oxlint . --fix",
     "check:tree": "node ./test/commands/check-clean-tree.ts",
-    "integration-test-ci": "npm run copy:typespec && npm run spector-test",
-    "spector-test": "concurrently --kill-others --success first \"npm:start-test-server\" \"npm:generate-and-run\"",
+    "integration-test-ci": "pnpm copy:typespec && pnpm spector-test",
+    "spector-test": "concurrently --kill-others --success first \"pnpm start-test-server\" \"pnpm generate-and-run\"",
     "start-test-server": "node ./test/commands/start-test-server.js",
     "copy:typespec": "node ./test/commands/copy-typespec.ts",
-    "generate-and-run": "npm run generate-tsp-only:client && concurrently --kill-others-on-fail \"npm:integration-test:alone\" \"npm:generate-tsp-only:declarations\" && npm run stop-test-server -- -p 3002",
+    "generate-and-run": "pnpm generate-tsp-only:client && concurrently --kill-others-on-fail \"pnpm integration-test:alone\" \"pnpm generate-tsp-only:declarations\" && pnpm stop-test-server",
     "generate-tsp-only": "node ./test/commands/gen-spector.js",
     "generate-tsp-only:client": "node ./test/commands/gen-spector.js --phase=client",
     "generate-tsp-only:declarations": "node ./test/commands/gen-spector.js --phase=declarations",
-    "regen-test-baselines": "npm run generate-tsp-only",
+    "regen-test-baselines": "pnpm generate-tsp-only",
     "integration-test:alone": "vitest run --project integration-azure-modular",
-    "stop-test-server": "npx tsp-spector server stop",
+    "stop-test-server": "pnpm exec tsp-spector server stop -p 3002",
     "unit-test": "cross-env NODE_OPTIONS=--max-old-space-size=1024 vitest run --project unit-modular",
     "gen:scenario-suites": "node ./test/commands/gen-scenario-suites.ts",
-    "regen-docs": "npm run build && tspd doc . --enable-experimental --output-dir ../../website/src/content/docs/docs/emitters/clients/typespec-ts/reference --skip-js"
+    "regen-docs": "pnpm build && tspd doc . --enable-experimental --output-dir ../../website/src/content/docs/docs/emitters/clients/typespec-ts/reference --skip-js"
   },
   "author": "Jose Heredia <joheredi@microsoft.com>",
   "license": "MIT",
diff --git a/packages/typespec-ts/test/commands/gen-scenario-suites.ts b/packages/typespec-ts/test/commands/gen-scenario-suites.ts
index 5ca2a58895..da1c288942 100644
--- a/packages/typespec-ts/test/commands/gen-scenario-suites.ts
+++ b/packages/typespec-ts/test/commands/gen-scenario-suites.ts
@@ -5,7 +5,7 @@
  * files lets vitest run them in parallel worker processes, which dramatically
  * reduces wall-clock time and per-worker memory.
  *
- * Run with: `npm run gen:scenario-suites`
+ * Run with: `pnpm gen:scenario-suites`
  *
  * The `coverage` guard test in `scenario-suites.guard.test.ts` fails if the
  * generated files drift from the scenario directory tree, prompting a re-run.
@@ -45,7 +45,7 @@ export function suiteFileName(relDir: string): string {
 function suiteFileContent(relDir: string): string {
   const posixRel = relDir.split(path.sep).join("/");
   const location = `./test/modular-unit/scenarios/${posixRel}`;
-  return `// Generated by \`npm run gen:scenario-suites\`. Do not edit by hand.
+  return `// Generated by \`pnpm gen:scenario-suites\`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/commands/start-test-server.js b/packages/typespec-ts/test/commands/start-test-server.js
index 14c7bd8d0b..9dd44a3376 100644
--- a/packages/typespec-ts/test/commands/start-test-server.js
+++ b/packages/typespec-ts/test/commands/start-test-server.js
@@ -25,8 +25,8 @@ try {
 }
 
 const child = spawn(
-  "npx",
-  ["tsp-spector", "serve", ...SPEC_PATHS, "--port", PORT, "--coverageFile", COVERAGE_FILE],
+  "pnpm",
+  ["exec", "tsp-spector", "serve", ...SPEC_PATHS, "--port", PORT, "--coverageFile", COVERAGE_FILE],
   { stdio: "inherit", shell: true },
 );
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites.guard.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites.guard.test.ts
index cfdb8e8f72..3dfa67966f 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites.guard.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites.guard.test.ts
@@ -12,7 +12,7 @@ function suiteFileName(relDir: string): string {
 /**
  * Guards against silent coverage loss: every leaf scenario directory must have
  * exactly one generated suite file, and vice versa. If this fails after adding
- * or moving scenarios, run `npm run gen:scenario-suites`.
+ * or moving scenarios, run `pnpm gen:scenario-suites`.
  */
 it("every scenario leaf directory has a generated suite file", () => {
   const expected = getLeafScenarioDirs().map(suiteFileName).sort();
@@ -23,6 +23,6 @@ it("every scenario leaf directory has a generated suite file", () => {
   assert.deepEqual(
     actual,
     expected,
-    "Scenario suite files are out of sync with the scenario directory tree. Run `npm run gen:scenario-suites` to regenerate them.",
+    "Scenario suite files are out of sync with the scenario directory tree. Run `pnpm gen:scenario-suites` to regenerate them.",
   );
 });
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/anonymous.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/anonymous.test.ts
index 66038a2d2d..f089bcf754 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/anonymous.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/anonymous.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/api-operations.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/api-operations.test.ts
index 3032e37cb7..18f2876b72 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/api-operations.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/api-operations.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/classic-client.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/classic-client.test.ts
index 314019e123..802321424d 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/classic-client.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/classic-client.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/client-context.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/client-context.test.ts
index ab8e49557e..72a561961f 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/client-context.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/client-context.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/empty-project.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/empty-project.test.ts
index b6f1363fdb..78b4d9dbc8 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/empty-project.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/empty-project.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/enum-union.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/enum-union.test.ts
index 1c4e12d737..b9916ccf40 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/enum-union.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/enum-union.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/example.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/example.test.ts
index 234daa02bf..c1336bfb88 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/example.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/example.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models-generator.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models-generator.test.ts
index d89a52bbc9..5137d09511 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models-generator.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models-generator.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models.test.ts
index 1db72e427f..966f1aed4c 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models__api-version.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models__api-version.test.ts
index 1521f85aee..bcbfd045ae 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models__api-version.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models__api-version.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models__arm.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models__arm.test.ts
index 9bcc68b627..1a71596d79 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models__arm.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models__arm.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models__deserialization.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models__deserialization.test.ts
index 4202a90d8d..b59d03f9a0 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models__deserialization.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models__deserialization.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models__nested-enum__flatten.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models__nested-enum__flatten.test.ts
index 20bc80ae76..d78438d3de 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models__nested-enum__flatten.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models__nested-enum__flatten.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models__nested-enum__not-flatten.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models__nested-enum__not-flatten.test.ts
index 9e60aff34e..00696652e5 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models__nested-enum__not-flatten.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models__nested-enum__not-flatten.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models__nullable.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models__nullable.test.ts
index 2aa72c94fe..73668fff4e 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models__nullable.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models__nullable.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models__property-flatten.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models__property-flatten.test.ts
index f2712d19f5..071fb3c4eb 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models__property-flatten.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models__property-flatten.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models__response.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models__response.test.ts
index 15c6859b52..e2fa92d035 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models__response.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models__response.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models__serialization.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models__serialization.test.ts
index cf2a28e65f..c8b1fcdaf1 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models__serialization.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models__serialization.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/models__template.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/models__template.test.ts
index 71a8e6cf34..b88dd40210 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/models__template.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/models__template.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/multipart.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/multipart.test.ts
index 78af28a6e9..45443ee368 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/multipart.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/multipart.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/operations.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/operations.test.ts
index 444bc37fe2..b6b0454763 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/operations.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/operations.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__body-param.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__body-param.test.ts
index 46382435d0..1716d4c5a3 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__body-param.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__body-param.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__cookie-param.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__cookie-param.test.ts
index 2433fbac19..11af12dcf4 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__cookie-param.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__cookie-param.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__error-deserialization.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__error-deserialization.test.ts
index 20df8770c4..8cbe456879 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__error-deserialization.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__error-deserialization.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__header-param.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__header-param.test.ts
index 18c62f4fe3..5a3dd33329 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__header-param.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__header-param.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__pagination.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__pagination.test.ts
index c0c0f8d4fb..c1da32e53a 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__pagination.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__pagination.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__path-param.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__path-param.test.ts
index aff29e111e..3ac090da66 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__path-param.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__path-param.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__query-param.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__query-param.test.ts
index 2cecbd772e..738674c7a8 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__query-param.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__query-param.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__storage-compat.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__storage-compat.test.ts
index 8b80623375..af3b1f1810 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/operations__storage-compat.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/operations__storage-compat.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/payload__xml.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/payload__xml.test.ts
index 84e1804881..0f2738f315 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/payload__xml.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/payload__xml.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client.test.ts
index 54a15d5225..225d704eef 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client__disable-hierarchy.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client__disable-hierarchy.test.ts
index 0532a786e3..85fdba36c7 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client__disable-hierarchy.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client__disable-hierarchy.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client__enable-hierarchy.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client__enable-hierarchy.test.ts
index e664a0653d..10b8f3157f 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client__enable-hierarchy.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__client__enable-hierarchy.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__operations.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__operations.test.ts
index 1dc41aa2d8..587377b380 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__operations.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__operations.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__parameters.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__parameters.test.ts
index 74b199eb9e..838abb02c0 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__parameters.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__parameters.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__property-flatten.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__property-flatten.test.ts
index 505ff1445b..c48580675a 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/samples__property-flatten.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/samples__property-flatten.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/test__operations.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/test__operations.test.ts
index fda78a65c7..9665a29c90 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/test__operations.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/test__operations.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/test__parameters.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/test__parameters.test.ts
index 1c28733566..bce13e73dc 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/test__parameters.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/test__parameters.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/packages/typespec-ts/test/modular-unit/scenario-suites/test__responses.test.ts b/packages/typespec-ts/test/modular-unit/scenario-suites/test__responses.test.ts
index af4a822277..b542700f07 100644
--- a/packages/typespec-ts/test/modular-unit/scenario-suites/test__responses.test.ts
+++ b/packages/typespec-ts/test/modular-unit/scenario-suites/test__responses.test.ts
@@ -1,4 +1,4 @@
-// Generated by `npm run gen:scenario-suites`. Do not edit by hand.
+// Generated by `pnpm gen:scenario-suites`. Do not edit by hand.
 import { describe } from "vitest";
 import { describeScenarioDir } from "../scenario-runner.js";
 
diff --git a/website/src/content/docs/docs/emitters/typespec-autorest/index.md b/website/src/content/docs/docs/emitters/typespec-autorest/index.md
index db8b10a116..25a7b6bdce 100644
--- a/website/src/content/docs/docs/emitters/typespec-autorest/index.md
+++ b/website/src/content/docs/docs/emitters/typespec-autorest/index.md
@@ -22,7 +22,7 @@ The generated OpenAPI spec will have custom `x-ms-` extensions properties and co
 }
 ```
 
-2. Run `npm install` to install the dependency
+2. Run `pnpm install` to install the dependency
 3. Import `@azure-tools/typespec-autorest` in your `main.tsp` file
 
 ```typespec