diff --git a/server.js b/server.js
new file mode 100644
index 0000000..de24ee7
--- /dev/null
+++ b/server.js
@@ -0,0 +1,109 @@
+import express from 'express';
+import fs from 'node:fs';
+import path from 'node:path';
+import { execSync } from 'node:child_process';
+import yaml from 'js-yaml';
+
+const app = express();
+const PORT = 3233;
+const AGENTS_DIR = '/agents';
+const HERDCTL_CONTAINER = 'herdctl';
+
+app.use(express.json({ limit: '1mb' }));
+app.use(express.static('public'));
+
+// List all agents
+app.get('/api/agents', (req, res) => {
+  try {
+    const files = fs.readdirSync(AGENTS_DIR).filter(f => f.endsWith('.yaml') || f.endsWith('.yml'));
+    const agents = files.map(file => {
+      const content = fs.readFileSync(path.join(AGENTS_DIR, file), 'utf8');
+      let parsed = {};
+      try { parsed = yaml.load(content); } catch(e) {}
+      return {
+        filename: file,
+        name: parsed.name || file.replace(/\.ya?ml$/, ''),
+        description: parsed.description || '',
+        schedules: parsed.schedules ? Object.keys(parsed.schedules) : []
+      };
+    });
+    res.json(agents);
+  } catch (err) { res.status(500).json({ error: err.message }); }
+});
+
+// Get agent YAML content
+app.get('/api/agents/:filename', (req, res) => {
+  try {
+    const filename = path.basename(req.params.filename);
+    if (!filename.endsWith('.yaml') && !filename.endsWith('.yml'))
+      return res.status(400).json({ error: 'Invalid file' });
+    const filepath = path.join(AGENTS_DIR, filename);
+    if (!fs.existsSync(filepath)) return res.status(404).json({ error: 'Not found' });
+    res.json({ filename, content: fs.readFileSync(filepath, 'utf8') });
+  } catch (err) { res.status(500).json({ error: err.message }); }
+});
+
+// Save agent YAML and restart herdctl
+app.put('/api/agents/:filename', (req, res) => {
+  try {
+    const filename = path.basename(req.params.filename);
+    if (!filename.endsWith('.yaml') && !filename.endsWith('.yml'))
+      return res.status(400).json({ error: 'Invalid file' });
+    const { content } = req.body;
+    if (!content) return res.status(400).json({ error: 'No content' });
+    try { yaml.load(content); } catch(e) {
+      return res.status(400).json({ error: `Invalid YAML: ${e.message}` });
+    }
+    const filepath = path.join(AGENTS_DIR, filename);
+    if (fs.existsSync(filepath)) fs.copyFileSync(filepath, filepath + '.bak');
+    fs.writeFileSync(filepath, content, 'utf8');
+    try {
+      execSync(`docker restart ${HERDCTL_CONTAINER}`, { timeout: 15000 });
+      res.json({ success: true, message: 'Saved and herdctl restarted.' });
+    } catch (e) {
+      res.json({ success: true, message: 'Saved. Restart failed: ' + e.message });
+    }
+  } catch (err) { res.status(500).json({ error: err.message }); }
+});
+
+// Create new agent
+app.post('/api/agents', (req, res) => {
+  try {
+    const { filename, content } = req.body;
+    if (!filename || !content) return res.status(400).json({ error: 'filename and content required' });
+    const safe = path.basename(filename);
+    if (!safe.endsWith('.yaml') && !safe.endsWith('.yml'))
+      return res.status(400).json({ error: 'Filename must end in .yaml or .yml' });
+    try { yaml.load(content); } catch(e) {
+      return res.status(400).json({ error: `Invalid YAML: ${e.message}` });
+    }
+    const filepath = path.join(AGENTS_DIR, safe);
+    if (fs.existsSync(filepath)) return res.status(409).json({ error: 'File already exists' });
+    fs.writeFileSync(filepath, content, 'utf8');
+    res.json({ success: true, filename: safe });
+  } catch (err) { res.status(500).json({ error: err.message }); }
+});
+
+// Trigger agent immediately via herdctl API
+app.post('/api/agents/:filename/trigger', (req, res) => {
+  try {
+    const filename = path.basename(req.params.filename);
+    const content = fs.readFileSync(path.join(AGENTS_DIR, filename), 'utf8');
+    const parsed = yaml.load(content);
+    const agentName = parsed.name || filename.replace(/\.ya?ml$/, '');
+    execSync(`curl -s -X POST http://herdctl:3232/api/agents/${agentName}/trigger`, { timeout: 10000 });
+    res.json({ success: true, message: `Triggered ${agentName}` });
+  } catch (err) { res.status(500).json({ error: err.message }); }
+});
+
+// Proxy herdctl agent status
+app.get('/api/status', (req, res) => {
+  try {
+    const result = execSync('curl -s http://herdctl:3232/api/agents', { timeout: 5000 }).toString();
+    res.json(JSON.parse(result));
+  } catch (err) { res.status(500).json({ error: err.message }); }
+});
+
+app.listen(PORT, '0.0.0.0', () => {
+  console.log(`herdctl-editor running on port ${PORT}`);
+});