No-as-a-Service

Because saying "no" apparently requires an API now.

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An API service providing 1,000+ creative ways to decline requests. For those who find saying "no" requires more architectural complexity than it deserves, or who simply appreciate the precision of professionally crafted rejection.

What Is This?

NoaaS is a REST API service with an MCP server wrapper that provides creative rejection responses across four categories:

Two Components:

• REST API (primary) - Public HTTP API anyone can call directly
• MCP Server (wrapper) - Bridges Claude Desktop to the REST API via stdio transport

Architecture

                     REST API (Primary Service)
    +-------------+  +-------------+  +-------------+
    |   Express   |  | Cloudflare  |  |   Docker    |
    |  (Node.js)  |  |   Workers   |  |  Container  |
    +-------------+  +-------------+  +-------------+
            |              |              |
            +--------------+--------------+
                           |
                     reasons.json
                   (1000+ responses)
                           |
         +-----------------+-----------------+
         |                 |                 |
       HTTP              HTTP              HTTP
         |                 |                 |
    +----+----+      +-----+-----+     +-----+-----+
    |Web Apps |      |curl/fetch |     |MCP Server |
    | Mobile  |      |  Python   |     |  (stdio)  |
    +---------+      +-----------+     +-----+-----+
                                             |
                                           stdio
                                             |
                                    +-----------------+
                                    | Claude Desktop  |
                                    | Cursor IDE      |
                                    +-----------------+

Key Points:

• REST API is the primary service with all business logic
• MCP Server is a thin stdio wrapper that bridges AI assistants to the REST API
• Works with Claude Desktop, Cursor, and other MCP-compatible clients

Response Categories:

• Polite - For when you want them to think you actually considered their request
• Humorous - Because adding a joke makes rejection feel less like rejection (it doesn't)
• Professional - Corporate-approved ways to say no while sounding like you care (you don't)
• Creative - For people who think being clever makes them more interesting (debatable)

Note: Original responses were generated by AI. The 252 professional corporate jargon responses and complete categorization system were authored and organized by Claude (Anthropic). So if they're occasionally weird, nonsensical, or sound like a robot trying too hard to be human, that's why. We've kept them anyway. Quality control is overrated.

Quick Start

Use the Public Service

Just call the API. No installation, no signup, no nonsense.

curl -X POST https://api.mcp-for-no.com/v1/tools/call \
  -H "Content-Type: application/json" \
  -d '{"method":"getRandomNo","params":{"category":"humorous"}}'

Response:

{
  "jsonrpc": "2.0",
  "result": {
    "response": "I'd love to say yes, but my calendar is allergic to that date."
  }
}

Deploy Your Own

Want to run your own instance? We respect your trust issues.

Recommended: Cloudflare Workers (Free)

Zero maintenance, global edge network, automatic scaling. The sensible choice.

npm install
# Copy wrangler config template
cp 

... [View full README on GitHub](https://github.com/Koneisto/no-as-a-service#readme)