diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9c4eae6..2fa8c33 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,6 @@ All notable changes to json2sql will be documented in this file.
 
 - CLI integration tests with comprehensive coverage (#8, #9, #10)
 - Standalone dialect tests and converter edge cases (#10)
-- npm wrapper (`package.json` + `cli.js`) for npm publishing
 - GitHub Actions: PyPI publish workflow (release or manual dispatch)
 - GitHub Actions: GitHub Pages deployment workflow
 - GitHub Actions: npm publish workflow (release or manual dispatch)
@@ -45,13 +44,14 @@ All notable changes to json2sql will be documented in this file.
 - README rewritten with unified pricing tables, Revenue Holdings branding
 - README expanded with CI/CD integration examples and alternatives comparison
 - README tool count and DevForge URLs updated
-- npm install instructions added to README
+- README install instructions limited to pip, Homebrew, and Scoop (no npm package)
 
 ## [0.1.0] — 2026-05-14
 
 ### Added
 
 - Initial release
+- PyPI package publishing (json2sql-cli) and local Node.js CLI wrapper
 - JSON to SQL INSERT conversion
 - Nested JSON auto-flattening into relational tables
 - Multi-dialect output: PostgreSQL, MySQL, SQLite
diff --git a/README.md b/README.md
index bd75a8f..ab33c15 100644
--- a/README.md
+++ b/README.md
@@ -40,12 +40,6 @@ scoop bucket add Coding-Dev-Tools https://github.com/Coding-Dev-Tools/scoop-buck
 scoop install json2sql-cli
 ```
 
-**npm (Node.js wrapper):**
-```bash
-npm install -g json2sql
-```
-Then run: `json2sql --help`
-
 ## Quick Start
 
 ```bash
diff --git a/tests/smoke.test.js b/tests/smoke.test.js
index c5026b3..e191acf 100644
--- a/tests/smoke.test.js
+++ b/tests/smoke.test.js
@@ -24,3 +24,64 @@ test("smoke: required repo files present", () => {
     assert.ok(fs.existsSync(path.join(root, f)), `${f} must exist`);
   }
 });
+
+test("smoke: README documents supported install paths only", () => {
+  const readmePath = path.join(__dirname, "..", "README.md");
+  assert.ok(fs.existsSync(readmePath), "README.md must exist");
+
+  const readme = fs.readFileSync(readmePath, "utf8");
+  const lines = readme.split(/\r?\n/);
+
+  const installStart = lines.findIndex((line) => /^##\s+Install(?:ation)?\s*$/i.test(line));
+  assert.notStrictEqual(installStart, -1, "README must have an Install section");
+  const nextHeading = lines.findIndex(
+    (line, index) => index > installStart && /^##\s+/.test(line)
+  );
+  const installSection = lines
+    .slice(installStart + 1, nextHeading === -1 ? undefined : nextHeading)
+    .join("\n");
+
+  assert.match(
+    installSection,
+    /pip install (?:json2sql-cli|git\+https:\/\/github\.com\/Coding-Dev-Tools\/json2sql(?:\.git)?)/,
+    "README Install section must document `pip install json2sql-cli` (or the documented git fallback)"
+  );
+  assert.match(
+    installSection,
+    /\bjson2sql-cli\b/,
+    "README Install section must name the json2sql-cli package"
+  );
+
+  for (const [needle, label] of [
+    ["brew tap ", "Homebrew tap"],
+    ["scoop bucket add ", "Scoop bucket"],
+  ]) {
+    assert.ok(installSection.includes(needle), `README must document ${label}`);
+  }
+
+  const fencedBlocks = [
+    ...readme.matchAll(/^```[^\n]*\n([\s\S]*?)^```[ \t]*$/gm),
+  ].map((match) => match[1]);
+
+  const forbiddenNpmUsage = [
+    [/\bnpm\s+(?:install|i|add|exec|x|dlx)\b[^\n]*\bjson2sql(?:-cli)?(?![\w.-])/i, "npm"],
+    [/\bnpx\b[^\n]*\bjson2sql(?:-cli)?(?![\w.-])/i, "npx"],
+    [
+      /\b(?:pnpm|yarn)\s+(?:add|global\s+add|dlx)\b[^\n]*\bjson2sql(?:-cli)?(?![\w.-])/i,
+      "pnpm/yarn",
+    ],
+  ];
+
+  const sources = [
+    ["README.md", readme],
+    ...fencedBlocks.map((block, index) => [`README.md fenced code block ${index + 1}`, block]),
+  ];
+  for (const [sourceName, source] of sources) {
+    for (const [pattern, runner] of forbiddenNpmUsage) {
+      assert.ok(
+        !pattern.test(source),
+        `${sourceName} must not use \`${runner}\` to install or run json2sql: npm \`json2sql\` is an unrelated third-party package and this project publishes no npm package`
+      );
+    }
+  }
+});