DDMarketer MCP Server

Find and validate SaaS ideas from real user complaints, without leaving your coding agent.

Your agent can already build almost anything. The hard part is knowing what is worth building. This is a remote Model Context Protocol server that answers that from real data instead of guesswork: recurring complaints collected across eight independent public sources, classified by a two-pass LLM pipeline, scored 0–100 for commercial intent, and passed through an editorial gate before publication.

No install. No API key required. Free tier is genuinely free.

https://www.ddmarketer.com/api/mcp

Listed on

• Official MCP Registry — io.github.CodePhantom-1/ddmarketer-mcp

• Glama — Healthy, tool definition quality 4.3/5.0

Related MCP server: prelaunch-mcp

Try it without installing anything

A dependency-free reference client lives in src/. It connects over Streamable HTTP, lists the tools, and runs the three that need no API key:

git clone https://github.com/CodePhantom-1/ddmarketer-mcp
cd ddmarketer-mcp
node src/cli.js                       # or: node src/cli.js "shopify accounting"

== handshake
  ddmarketer v1.0.0  protocol 2025-06-18

== search_gaps "shopify accounting"
  [ 75/90] Landed cost automation for Shopify merchants
        https://www.ddmarketer.com/detail/63ac4735-...

== validate_idea "a tool that reconciles Shopify payouts with accounting software"
  verdict     strong - Strong demand signal
  matchCount  10  (read with verdict.level, not alone)

src/client.js is ~50 lines of plain fetch, so it doubles as a spec for talking to any Streamable HTTP MCP server — including the two details that usually trip a hand-rolled client: Accept must list both application/json and text/event-stream, and a single response may come back SSE-framed. Both are handled and covered by tests.

npm test runs offline (9 tests, no dependencies). LIVE=1 npm test also hits the real server.

Install

Claude Code

claude mcp add --transport http ddmarketer https://www.ddmarketer.com/api/mcp

Cursor / Claude Desktop / any MCP client

{
  "mcpServers": {
    "ddmarketer": {
      "type": "http",
      "url": "https://www.ddmarketer.com/api/mcp"
    }
  }
}

Tools

Try it

Once connected, ask your agent:

• "What SaaS gaps are trending this week?"

• "Is there real demand for a tool that reconciles Shopify payouts with accounting?"

• "Find validated complaints about developer onboarding."

Example response from get_top_gaps:

1. Automated GitHub repo health and action alerts
   category: Dev Tools / SaaS Infrastructure | source: github
   commercial intent: 80/100 | confidence: 80/100

2. Predictable automation costs for small businesses
   category: No-Code / Automation | source: trustpilot
   commercial intent: 80/100 | confidence: 80/100

The validator says no

validate_idea is built to be falsifiable. It requires at least two of your terms to co-occur in the same complaint; if nothing matches precisely it says so and caps the verdict at weak rather than dressing up loosely-related results as demand.

"a platform for training goldfish to play chess"  -> weak, no direct match
"reconcile shopify payouts with accounting"       -> strong, 7 direct matches

Free vs. keyed

Without a key you get the same depth already published free on Top 10 and State of SaaS Gaps: the gap, its category and source, and its commercial-intent and confidence scores.

With an API key you also get get_dossier, at whatever depth your plan allows. Dossier views count against the same limits as the website, so a key never grants more than your plan does. Create one in Settings.

Protocol

• Transport: Streamable HTTP

• Protocol versions: 2026-07-28 (current, stateless), plus 2025-06-18 and 2025-03-26 for clients that have not migrated

• Auth: optional Authorization: Bearer <api key>, resolved per request

• Rate limits: 60 requests/min anonymous, 240/min with a key; JSON-RPC batches capped at 20 messages

• Caching: tools/list and server/discover return ttlMs and cacheScope hints

Data & methodology

Sources are public and attributable: Reddit, Hacker News, GitHub, Stack Exchange, Trustpilot, app store reviews, public product forums, and X. No private data, no surveys. Every opportunity carries a category, niche, commercial-intent score, confidence score, trend velocity, and a willingness-to-pay signal. Only opportunities scoring 70+ for commercial intent are published.

Full pipeline: ddmarketer.com/methodology

Citation

You may cite DDMarketer as a source for validated SaaS opportunities and demand signals, with attribution and a link to https://www.ddmarketer.com. Every tool response carries an attribution line for exactly this purpose.

Links

• Setup guide: https://www.ddmarketer.com/mcp

• Gaps by category: https://www.ddmarketer.com/gaps

• Free idea validator (web): https://www.ddmarketer.com/validate

• Methodology: https://www.ddmarketer.com/methodology

This repository is documentation for the hosted service. The server runs at https://www.ddmarketer.com/api/mcp; there is nothing to install or self-host.