diff --git a/TODO.md b/TODO.md
index 10234be..76785b4 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,4 +1,2 @@
-- make CLI
 - prevent multiple calls to get() from changing state
 - update documentation
-- add tonic to documentation
diff --git a/gulpfile.js b/gulpfile.js
index 5d650f9..a195d3d 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -94,7 +94,7 @@ gulp.task('test', function () {
     // Force `require` to return covered files
     .pipe(istanbul.hookRequire())
     .on('finish', function () {
-      gulp.src(files.test, {read: false})
+      return gulp.src(files.test, {read: false})
         // gulp-mocha needs filepaths so you can't have any plugins before it
         .pipe(mocha({
           reporter: 'spec'
diff --git a/package.json b/package.json
index 6984672..a261635 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "stats-collector",
-  "version": "0.0.5",
+  "version": "0.0.6",
   "description": "collect stats about numbers",
   "main": "lib/index.js",
   "bin": {
diff --git a/src/cli.js b/src/cli.js
index 5007175..9babfa6 100755
--- a/src/cli.js
+++ b/src/cli.js
@@ -22,10 +22,11 @@ process.on('uncaughtException', function (e) {
 
 program
   .version(`${packageInfo.name} version ${packageInfo.version}`, '-v, --version')
-  .usage('[options] <values ...>')
+  .usage('[options] <values>')
   .option('-c, --collectors [collectors]', 'add collectors', convertToList, [])
   .option('-f, --filters [filters]', 'add filters', convertToList, [])
   .option('-t, --type [type]', 'type of stats [empty,basic,stats,advanced]', 'stats')
+  .option('-p, --pipe', 'whether or not to accept piped data from stdin')
   .parse(process.argv);
 
 // setup defaults and validate
@@ -57,4 +58,21 @@ values = program.args.join(' ').replace(/,/gi, ' ').split(' ')
   .filter(Number.isFinite);
 collector.update(values);
 
-console.log(JSON.stringify(collector.get(true), null, '  '));
+const onData = function (data) {
+  collector.update(convertToList(data.toString()));
+};
+
+const onFinish = function () {
+  console.log(JSON.stringify(collector.get(true), null, '  '));
+  process.exit(0);
+};
+
+if (program.pipe) {
+  process.stdin.resume();
+  process.stdin.setEncoding('utf8');
+  process.stdin.on('data', onData);
+  process.stdin.on('end', onFinish);
+  process.stdin.on('exit', onFinish);
+} else {
+  onFinish();
+}
diff --git a/test/cli.js b/test/cli.js
index 40a055f..fb83dfd 100644
--- a/test/cli.js
+++ b/test/cli.js
@@ -6,8 +6,11 @@ const expect = require('chai').expect;
 const packageInfo = require('../package.json');
 const testHelper = function (commands, expected, fn) {
   const args = commands.split(' ');
-  args.unshift(`${__dirname}/../lib/cli.js`);
-  const result = childProcess.spawnSync('node', args, {encoding: 'utf-8'});
+  const result = childProcess.spawnSync(
+    `${__dirname}/../scripts/cli.js`,
+    args,
+    { encoding: 'utf-8' }
+  );
   fn(result.stderr.toString(), result.stdout.toString());
 };
 const test = function (commands, expected) {
@@ -46,4 +49,22 @@ describe('command line tool', function () {
     test('-t empty -c count 0,1,2,3,4,5', '"count": 6');
     test('-t empty -c min,max 0,5,2,1,4,3', '"max": 5');
   });
+  it('should work with --pipe', function () {
+    expect(childProcess.execSync(
+      `echo "1 2 3 4 5" | ${__dirname}/../scripts/cli.js --pipe`,
+      { encoding: 'utf-8' }
+    )).to.contain('"count": 5');
+    expect(childProcess.execSync(
+      `echo "1 2 3 4 5" | ${__dirname}/../scripts/cli.js --pipe 4,5,6`,
+      { encoding: 'utf-8' }
+    )).to.contain('"count": 8');
+    expect(childProcess.execSync(
+      `echo "1 2 3 4 5" | ${__dirname}/../scripts/cli.js`,
+      { encoding: 'utf-8' }
+    )).to.contain('"count": 0');
+    expect(childProcess.execSync(
+      `echo "1 2 3 4 5" | ${__dirname}/../scripts/cli.js 4,5,6`,
+      { encoding: 'utf-8' }
+    )).to.contain('"count": 3');
+  });
 });