diff --git a/fumen-utils/.gitignore b/fumen-utils/.gitignore
new file mode 100644
index 0000000..d5f19d8
--- /dev/null
+++ b/fumen-utils/.gitignore
@@ -0,0 +1,2 @@
+node_modules
+package-lock.json
diff --git a/fumen-utils/list.js b/fumen-utils/list.js
new file mode 100644
index 0000000..a703b4f
--- /dev/null
+++ b/fumen-utils/list.js
@@ -0,0 +1,25 @@
+const fumen = require('tetris-fumen');
+const { argv } = require('node:process');
+const { fumenPageToInputState, fumenPagePlayMove, runFishCli } = require('./src/utils');
+
+async function main() {
+    if (argv.length != 3) {
+        throw new Error('usage: node list <url>');
+    }
+
+    let url = argv[2];
+    let pages = fumen.decoder.decode(url);
+    if (pages.length !== 1) {
+        throw new Error('expected exactly one page');
+    }
+
+    let inputState = fumenPageToInputState(pages[0]);
+    let output = await runFishCli(['list'], inputState);
+    for (let move of output.moves) {
+        pages.push(fumenPagePlayMove(pages[0], move, { lock: false }));
+    }
+
+    console.log(fumen.encoder.encode(pages));
+}
+
+main().catch(e => console.error(e));
diff --git a/fumen-utils/package.json b/fumen-utils/package.json
new file mode 100644
index 0000000..c498ac1
--- /dev/null
+++ b/fumen-utils/package.json
@@ -0,0 +1,10 @@
+{
+  "name": "fumen-utils",
+  "version": "1.0.0",
+  "description": "",
+  "author": "iitalics",
+  "license": "LGPL-2.1-or-later",
+  "dependencies": {
+    "tetris-fumen": "^1.1.3"
+  }
+}
diff --git a/fumen-utils/src/utils.js b/fumen-utils/src/utils.js
new file mode 100644
index 0000000..98923d5
--- /dev/null
+++ b/fumen-utils/src/utils.js
@@ -0,0 +1,98 @@
+const fumen = require('tetris-fumen');
+const { Quiz } = require('tetris-fumen/lib/quiz');
+const { Page } = require('tetris-fumen/lib/decoder');
+const { env } = require('node:process');
+const { spawn } = require('node:child_process');
+const path = require('node:path');
+
+function fumenPageToInputState(page) {
+    let board = new Array(40);
+    for (let y = 0; y < 23; y++) {
+        let row = board[y] = new Array(10);
+        for (let x = 0; x < 10; x++) {
+            row[x] = page.field.at(x, y);
+            if (row[x] === '_') {
+                row[x] = null;
+            } else if (row[x] === 'X') {
+                row[x] = 'G';
+            }
+        }
+    }
+    board[23] = new Array(10);
+    for (let x = 0; x < 10; x++) {
+        board[23][x] = null
+    }
+    for (let y = 24; y < 40; y++) {
+        board[y] = board[23];
+    }
+
+    if (!page.flags.quiz) {
+        throw new Error('page doesnot specify queue');
+    }
+    let quiz = new Quiz(page.comment);
+    let hold = quiz.hold;
+    let queue = [quiz.current, ...quiz.least];
+
+    return {
+        hold,
+        queue,
+        combo: 0,
+        back_to_back: 0,
+        board,
+    };
+}
+
+function fumenPagePlayMove(page, move, flags) {
+    let quiz = new Quiz(page.comment);
+    // console.log(`${move.location.x},${move.location.y},${move.location.orientation[0]}`);
+    return {
+        operation: {
+            type: move.location.type,
+            x: move.location.x,
+            y: move.location.y,
+            rotation: {
+                'north': 'spawn',
+                'east': 'right',
+                'south': 'reverse',
+                'west': 'left',
+            }[move.location.orientation],
+        },
+        flags,
+    };
+}
+
+function runFishCli(args, input, cmd = getFishCliPath()) {
+    let fish = spawn(cmd, args, { stdio: ['pipe', 'pipe', 'inherit'] });
+
+    let data = [];
+    let output = null;
+    fish.stdout.on('data', (buf) => data.push(buf));
+    fish.stdout.on('end', () => {
+        output = JSON.parse(Buffer.concat(data).toString());
+    });
+
+    let exitPromise = new Promise((res, rej) => {
+        fish.on('exit', (code) => {
+            if (code === 0) {
+                res(output);
+            } else {
+                rej(new Error(`exit code: ${code}`));
+            }
+        });
+    });
+
+    if (input !== undefined) {
+        fish.stdin.end(JSON.stringify(input));
+    }
+    return exitPromise;
+}
+
+function getFishCliPath() {
+    return process.env['FISH_CLI'] || path.join(__dirname, '../../target/release/fish-cli');
+}
+
+module.exports = {
+    fumenPageToInputState,
+    fumenPagePlayMove,
+    runFishCli,
+};