launch-detector-mcp

See what a company is building before they announce it. Every website needs a TLS certificate, and every certificate is published in public certificate transparency logs, usually weeks before a new subdomain goes live. This MCP server reads those logs through crt.sh and surfaces new product-like subdomains, so Claude (or any MCP client) can tell you what a competitor might be about to launch.

No API keys. One line to install.

You:    Anything new brewing at Linear?
Claude: [launch_signals(domain="linear.app", days=365)]
        • "orbit" is the strongest new name: orbit.linear.app and *.orbit.linear.app
          first got certificates on 2026-08-24. A wildcard under it suggests
          something that hosts many sub-sites.
        • "checkout" (2026-06-29) and "asks" (2026-02-10) are also new.
        These are hints from certificate logs, not announcements.

_{Summarized from real tool output, 1 Oct 2026.}

Why

How it works

flowchart LR
    C[Claude / MCP client] -->|tool call| S[launch-detector-mcp]
    S --> T[crt.sh: every certificate for *.domain]
    T --> N[Hostnames with first/last seen dates]
    N --> K["Stem: stt-a100.titanium.api.x.com → titanium<br/>drop regions, numbered nodes, mail/cdn/www"]
    K --> R[Score: new + several hostnames + staging/beta/preview + product words]
    R -->|ranked names with evidence| C

Staging, beta, preview and sandbox variants are kept as signals, not dropped: a product that gets a staging host first is often close to launch. Results are cached for a day on disk (~/.cache/launch-detector).

Install

Requires uv.

Claude Code

claude mcp add launch-detector -- uvx launch-detector-mcp

Claude Desktop / Cursor (claude_desktop_config.json / .cursor/mcp.json)

{
  "mcpServers": {
    "launch-detector": {
      "command": "uvx",
      "args": ["launch-detector-mcp"]
    }
  }
}

Tools

Prompts: whats_coming (one company), competitor_radar (several companies).

Try these

• "What might Stripe launch next? Use the last 6 months."
• "Run a launch radar on openai.com, anthropic.com and mistral.ai for the last 30 days."
• "When did Linear's certificate activity spike this year?"

Limits (read these)

• Hints, not proof. A new hostname can be an internal tool, a test, a vendor integration or a renamed service.
• Companies that use wildcard certificates (*.example.com) for everything reveal less.
• crt.sh is a free community service: it is slow (20–60 s for big domains) and often busy; the server retries and caches, but sometimes you will need to try again.
• Only public certificate data is used. Please use it for market research, not to probe systems.

Part of the keyless MCP series

Open-source MCP servers that answer one market question each, with public data and no API keys.

Development

uv sync --extra dev
uv run pytest                          # offline tests with a mocked crt.sh
uv run python scripts/smoke_live.py    # live check against crt.sh (a few minutes)
uv run --with rich python scripts/demo.py linear.app   # terminal demo (vhs docs/demo.tape records the GIF)

MIT © Ali Altunar