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You can integrate Obsidian with OpenClaw by building a small Obsidian plugin that talks to a secure backend service (the component you register as a skill in ClawHub). The plugin should send note content and lightweight metadata to your backend; the backend holds OAuth/API credentials, performs authenticated calls to external services (or coordinates OpenClaw skill logic), and returns status or posts results back via polling, webhooks, or push to the plugin. Configure the skill in ClawHub with its public HTTPS endpoint and secrets (API keys / OAuth client ID & secret), keep persistent state and long-running work outside the agent runtime, and validate everything with logs, token checks, and webhook signatures.
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import { Plugin } from 'obsidian';
export default class ObsidianSyncPlugin extends Plugin {
async onload() {
this.addCommand({
id: 'sync-current-note',
name: 'Sync current note to backend',
callback: async () => {
const file = this.app.workspace.getActiveFile();
if (!file) {
console.warn('No active file to sync');
return;
}
const content = await this.app.vault.read(file);
const apiKey = this.loadApiKey();
try {
const res = await fetch('https://api.example.com/sync-note', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'X-API-Key': apiKey
},
body: JSON.stringify({ path: file.path, content })
});
if (!res.ok) {
console.error('Sync failed', await res.text());
} else {
console.log('Synced', file.path);
}
} catch (err) {
console.error('Network error while syncing', err);
}
}
});
}
loadApiKey(): string {
<b>//</b> Implement secure settings storage for your plugin; do not hardcode API keys.
return (this.app as any).plugins?.settings?.pluginApiKey || '';
}
}
const express = require('express');
const fetch = require('node-fetch');
const bodyParser = require('body-parser');
const app = express();
app.use(bodyParser.json());
const PLUGIN_API_KEY = process.env.PLUGIN_API_KEY; <b>//</b> secret shared with the plugin
const EXTERNAL_UPLOAD_URL = 'https://storage.example.com/upload';
async function getTokensForUser(userId) {
<b>//</b> Replace with real DB lookup for user's OAuth tokens (access + refresh)
return { access_token: 'user-access-token' };
}
app.post('/sync-note', async (req, res) => {
<b>//</b> Validate incoming API key from plugin
const key = req.get('X-API-Key');
if (!key || key !== PLUGIN_API_KEY) return res.status(401).send('unauthorized');
const { path, content, userId } = req.body;
if (!path || !content) return res.status(400).send('missing fields');
try {
const tokens = await getTokensForUser(userId);
<b>//</b> Call the external storage API using user access token
const out = await fetch(EXTERNAL_UPLOAD_URL, {
method: 'POST',
headers: {
'Authorization': `Bearer ${tokens.access_token}`,
'Content-Type': 'application/json'
},
body: JSON.stringify({ path, content })
});
if (!out.ok) {
const text = await out.text();
console.error('Upstream error', out.status, text);
return res.status(502).send('upstream failed');
}
res.sendStatus(200);
} catch (err) {
console.error('Server error', err);
res.status(500).send('server error');
}
});
app.listen(process.env.PORT || 3000, () => {
console.log('backend listening');
});
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1
Give the Obsidian plugin either a valid API key or a valid OAuth access token and make sure the plugin sends it as an Authorization: Bearer <token> header to the OpenClaw runtime/ClawHub. Store keys in environment variables or ClawHub credential settings, verify scopes/permissions, and check runtime logs for signature/auth failures.
fetch(API_URL, {
method:"POST",
headers:{ "Authorization":"Bearer "+process.env.OPENCLAW_API_KEY, "Content-Type":"application/json" },
body: JSON.stringify({/* payload */})
})
// check response and logs for 401/403
2
Short answer: Register the obsidian:// scheme with the OS, ensure your OpenClaw runtime (or a small native shim) is the OS handler, and have that handler forward the received URI into the running OpenClaw agent (common patterns: process argv on launch or a local HTTP/WebSocket webhook). In ClawHub map that incoming event to the correct skill and verify authentication/permissions before invoking.
// macOS Info.plist snippet
<key>CFBundleURLTypes</key>
<array>
<dict>
<key>CFBundleURLName</key><string>obsidian</string>
<key>CFBundleURLSchemes</key><array><string>obsidian</string></array>
</dict>
</array>
// Windows .reg snippet
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\obsidian]
@="URL:Obsidian Protocol"
"URL Protocol"=""
[HKEY_CLASSES_ROOT\obsidian\shell\open\command]
@="\"C:\\Path\\to\\shim.exe\" \"%1\""
// Node.js shim: forward URI to a local OpenClaw endpoint
const http = require('http');
const fetch = require('node-fetch');
const uri = process.argv[1]; // // first arg on Windows/macOS when started as handler
fetch('http://localhost:8700/deeplink', {method:'POST', body:JSON.stringify({uri}), headers:{'Content-Type':'application/json'}});
3
Direct answer: run a hybrid approach — use OS file events for fast updates, add a short debounce, and have OpenClaw’s indexer perform periodic polling with content-hash or mtime checkpoints so Obsidian Sync’s rewrite/merge behavior neither misses nor double-indexes files.
Combine these settings:
File events catch user edits; polling covers sync/merge edge cases; hashing + checkpoints prevent duplicates. Together they make indexing reliable without inventing new APIs.
4
Direct answer: parse the Obsidian YAML frontmatter, normalize keys/types, map known keys to your OpenClaw document schema (e.g., title, body, tags), push unknown keys into a metadata or annotations field, and control mappings via environment-configured rules in the sync skill so nothing is assumed or automatic.
Steps:
// Node.js example: parse and build payload
const matter = require('gray-matter'); // npm i gray-matter
const md = `---\ntitle: Hello\ntags: [x,y]\nfoo: bar\n---\nBody`;
const doc = matter(md);
const payload = {
title: doc.data.title,
tags: Array.isArray(doc.data.tags)? doc.data.tags : [],
body: doc.content,
metadata: Object.fromEntries(Object.entries(doc.data).filter(([k])=>!['title','tags'].includes(k)))
};
// POST payload to your integration endpoint using env vars for URL/TOKEN
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