New | Model Context Protocol (MCP) & Developer API v1 Explore →

The Notebook Built for
Developers & AI Agents

Zero-latency snippet sharing, rich Markdown publishing, ANSI log analysis, and sandboxed live previews. From your terminal to Cursor & Claude in milliseconds.

Open Editor (Free) View Pricing API Docs

No account required Zero third-party trackers Clean raw URLs

supanote.app/n/preview-demo

MARKDOWN

Distributed State Reconciliation in Node.js

2 min read

When scaling WebSocket state across regional clusters, deterministic consensus requires bounded monotonic vector clocks. The system latency guarantees satisfy:

\lim_{k \to \infty} P(|T_k - \mu| < \epsilon) = 1 \quad \text{where} \quad \mathcal{O}(1) \text{ amortized}

Production Deployment Tip

Append .md to any Supanote link to retrieve the clean raw Markdown stream for static site generators or automated docs sync.

Fast SSR Ready · Marked + PrismJS + Web Crypto

< 10ms

Edge Response Time

25 MB

Pro File & Log Size

100%

Sandboxed Execution

Zero

Telemetry or Trackers

Engineered for Precision

Everything You Need to Share, Publish & Debug

Built from the ground up for modern engineering teams, open source builders, and autonomous AI agents.

Developer Markdown & Technical Publishing

Native GitHub Flavored Markdown (GFM), KaTeX-style mathematical formulas, interactive checklist items, table alignments, and custom callout directives (:::tip, :::warning, :::note).

:::note title="Architecture RFC"

Engineered with native Node.js HTTP compression & zlib streaming.

:::

ANSI Log & Crash Analysis

Paste messy server logs, Docker terminal outputs, or stack traces. Supanote strips or highlights ANSI 256 color escapes and provides click-to-anchor line links.

Hash line anchors: #L14-L28

Client-Side AES-256

Encrypt sensitive credentials, env variables, or incident logs in the browser using the Web Crypto API. The server never sees your plain-text key or secret data.

Zero-knowledge crypto architecture

Native Model Context Protocol (MCP)

Connect Cursor, Claude Desktop, Antigravity, or Windsurf directly. Your assistant can create shareable links, fetch historical pastes for context, and publish debugging summaries without leaving the editor.

Tools: supanote_create_note · supanote_get_note · supanote_list_notes Read Spec →

Blog & RSS Feeds (`/@username`)

Every verified username gets a public profile page with automatic RSS and Atom feeds. Turn your technical notes into a zero-maintenance engineering blog.

/u/:username/feed.xml

First-Class CLI & UNIX Pipeline Support

Append .txt or .raw to any paste URL to fetch raw plain text directly without HTML overhead. Stream outputs directly to grep, jq, or xargs.

curl -sL https://supanote.app/n/release-notes.txt | head -n 20 UNIX Friendly

Integrate in Under 60 Seconds

Pick your preferred integration layer and start publishing immediately.

# 1. Instant anonymous note via standard input
echo "Hello from Supanote CLI" | curl -s -X POST https://supanote.app/api/notes \
  -H "Content-Type: application/json" \
  -d '{"content": "Hello from terminal", "title": "CLI Note"}'

# 2. Upload file directly
curl -F "c=@server.log" https://supanote.app/api/notes

// Add to ~/.cursor/mcp.json or Claude Desktop Config:
{
  "mcpServers": {
    "supanote": {
      "command": "npx",
      "args": ["-y", "supanote-mcp"],
      "env": {
        "SUPANOTE_API_URL": "https://supanote.app"
      }
    }
  }
}

// Node.js Native Fetch
const response = await fetch('https://supanote.app/api/v1/notes', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer sn_pat_YOUR_TOKEN'
  },
  body: JSON.stringify({
    title: 'Automated CI Report',
    content: 'All 28 suites passed cleanly in 4.2s.',
    content_type: 'markdown'
  })
});
const { noteUrl } = await response.json();
console.log('Published note:', noteUrl);

Simple, Transparent Pricing

Free Forever for Everyday Use.
Power Up with Pro.

Simple, transparent developer plans. Cancel anytime with one click.

Community

For quick pastes, bug shares & code snippets

Free

$0 / forever

Up to 500 KB per paste
Unlimited public & unlisted pastes
Full Markdown, Math & ANSI syntax highlighting
Full CLI & cURL API integration
Permanent or 7-day expiration

Start Pasting Free

Pro Plan

Developer Pro

For power engineers, teams & automated pipelines

$9 / month · or $89/yr

25 MB paste & log size limit
Custom vanity slugs (/n/my-project)
End-to-End Client AES-256 password encryption
Verified @username profile badge & blog feeds
Unlimited Personal Access Tokens (PAT)
Priority edge routing & zero rate limit throttling

Upgrade to Pro →

Frequently Asked Questions

Everything you wanted to know about storage, privacy, and agent integrations.

How is Supanote different from GitHub Gist or Pastebin?

Supanote is specifically tailored for developer speed, rich technical content, and AI tooling. Unlike legacy pastebins, Supanote features first-class ANSI log rendering, live sandboxed HTML/CSS previews, mathematical equations, client-side AES-256 encryption, and native Model Context Protocol (MCP) server support for assistants like Cursor and Claude Desktop.

Is my data private and encrypted?

Yes. Unlisted pastes are hidden from search engines and indexers via noindex robot tags. For sensitive data, Supanote provides end-to-end client-side encryption using the standard Web Crypto API (AES-GCM 256-bit). The encryption key never touches our servers.

How does the Cursor & Claude MCP server work?

Supanote provides an open Model Context Protocol server adhering to the Anthropic MCP specification. When configured in your IDE, the agent can call tools to publish snippets, retrieve reference notes, or upload test tracebacks directly into clean links.

Can I use Supanote inside GitHub Actions or CI/CD?

Absolutely. You can cURL directly to /api/notes with a simple one-liner to capture build failures, test snapshots, or performance profiles and output a clean link in your CI summary.

Ready to Upgrade Your Developer Workflow?

Paste anything right now. No account or credit card required.

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The Notebook Built for Developers & AI Agents