0nMCP — Universal AI API Orchestrator

Q: How is 0nMCP different from Zapier?

0nMCP uses natural language instead of visual builders. Setup takes 2 minutes vs 30+ minutes per Zapier zap. It's free vs $20-$100+/month for Zapier. It offers 550 tools and is fully open source, while Zapier is proprietary.

Connect your apps. Say what you want. AI does the rest. 550 tools. 26 services. Zero config. The most comprehensive MCP server available — free and open source.

v1.7.0MIT Licensed550 Tools26 ServicesMCP Compatible

Get started in one command:

npx 0nmcp

MCP Registry GitHub npm

What is 0nMCP?

0nMCP is the universal AI API orchestrator built on the Model Context Protocol (MCP). It connects 26 services — Stripe, Slack, GitHub, Shopify, Twilio, and more — into a single natural language interface with 550 tools.

Instead of building Zapier workflows, writing custom API integrations, or learning visual automation builders, you describe what you want in plain English. 0nMCP figures out which APIs to call, in what order, and chains the data between them.

It runs locally on your machine, stores credentials on your filesystem, and sends API calls directly to each service. No cloud proxy. No subscription. No vendor lock-in. Just your AI assistant talking to your apps.

How It Works

# You say:

"Invoice john@acme.com for $500 and notify #sales on Slack when it's sent"

# 0nMCP does:

Step 1: Found John Smith (john@acme.com) in Stripe

Step 2: Created invoice INV-0042 for $500.00

Step 3: Posted to #sales: "New invoice sent to John Smith for $500"

Done. 3 steps. 2 services. 1.2 seconds.

Parse Intent

AI analyzes your request and identifies which services and tools are needed

Plan & Execute

Creates a multi-step execution plan, calls APIs in order, chains data between steps

Deliver Results

Summarizes what happened and confirms each step completed successfully

By the Numbers

550

Tools

Services

245

CRM Tools

CRM Modules

Supported Services

Service	Category	Capabilities
Stripe	Payments	Customers, invoices, subscriptions, balance, products, prices
SendGrid	Email	Send emails, manage contacts, templates, lists
Resend	Email	Transactional emails, domain management
Twilio	SMS/Voice	Send SMS, make calls, check message status
Slack	Communication	Post to channels, DMs, list users, create channels
Discord	Communication	Send messages, list server channels
OpenAI	AI	Text generation, DALL-E images, embeddings, TTS
Airtable	Database	CRUD records in any base, list bases
Notion	Database	Search, create pages, query databases
GitHub	Code	Repos, issues, pull requests
Linear	Projects	Issues, projects (GraphQL)
Shopify	E-commerce	Products, orders, customers, inventory
HubSpot	CRM	Contacts, companies, deals
Supabase	Database	Tables, auth users, storage buckets
Calendly	Scheduling	Events, event types, availability
Google Calendar	Scheduling	Events, calendars, CRUD
CRM	CRM	245 tools — contacts, conversations, calendars, invoices, payments, pipelines, social, custom objects

The Deepest CRM Integration in MCP

245 tools across 12 modules — every endpoint, every parameter, full CRUD. The most comprehensive CRM integration available in any MCP server. Every tool is data-driven, defined as configuration instead of code.

Auth

OAuth flow, token management, snapshot deploy

Contacts

CRUD, search, upsert, tags, notes, tasks, workflows

Conversations

Messaging — SMS, Email, WhatsApp, IG, FB, Live Chat

Calendars

Calendars, events, appointments, groups, resources

Opportunities

CRUD, search, upsert, pipelines, stages

Invoices

CRUD, send, void, record payments, templates

Payments

Orders, transactions, subscriptions, coupons

Products

Products + prices CRUD, inventory

Locations

Locations, tags, custom fields, custom values

Social

Social posts, blogs, authors, categories, Google Business

Users

Users, forms, surveys, funnels, media, companies

Objects

Custom objects, associations, workflows, snapshots

Installation

1. Run the command

npx 0nmcp

Or install globally: npm install -g 0nmcp

2. Add to Claude Desktop

{
  "mcpServers": {
    "0nmcp": {
      "command": "npx",
      "args": ["0nmcp"]
    }
  }
}

3. Restart Claude Desktop and start talking

That's it. Connect services with natural language: "Connect to Stripe with key sk_live_xxx"

0nMCP vs Alternatives

	0nMCP	Zapier	Custom Code
Setup time	2 minutes	30+ min per zap	Hours/days
Learning curve	None (natural language)	Medium (visual builder)	High (APIs, auth)
Multi-step tasks	Just describe it	Build complex zaps	Write orchestration
Cost	Free + your API keys	$20-$100+/month	Your time
Tools available	252	Varies	Whatever you build
Open source	Yes (MIT)	No	Depends
Maintenance	Zero	Update broken zaps	Fix API changes

Security

Local Execution

Runs on your machine, not in the cloud. No data leaves your environment.

Direct API Calls

Requests go straight to each service. No proxy, no middleman.

Local Credentials

Stored in ~/.0n/connections/ on your filesystem. Never transmitted.

Open Source

MIT licensed. Audit every line of code yourself on GitHub.

Rate Limiting

Built-in per-service rate limits prevent accidental API abuse.

Audit Trail

Full execution history logged to ~/.0n/history/ as JSONL.

The .0n Standard

0nMCP implements the .0n Standard — a universal configuration format for AI orchestration. Every connection, workflow, and execution log uses a consistent format stored in ~/.0n/.

~/.0n/
├── config.json           # Global settings
├── connections/          # Service credentials as .0n files
│   ├── stripe.0n
│   ├── slack.0n
│   └── sendgrid.0n
├── workflows/            # Saved automation definitions
├── snapshots/            # System state captures
├── history/              # Execution logs (JSONL by date)
└── cache/

Visual Workflow Builder

The 0n Marketplace includes a visual builder — an alternative to the terminal for non-technical users. Describe what you want in natural language, and the AI generates .0n workflow files you can save, import, compose, and execute.

Build

Chat with AI to generate .0n workflows. Save, download, or execute directly.

Import

Upload existing .0n files. Validates format and lets you save to your library.

Compose

Layer multiple .0n files into one workflow. AI merges steps, inputs, and launch codes.

.0n File Composition

.0n files are composable — you can layer multiple workflows into one unified file. The composition engine handles input deduplication, launch code merging, step concatenation with prefixed IDs, and variable reference rewriting.

# Compose: Layer two workflows into one
Workflow A: "Create contact" (3 steps)
Workflow B: "Send welcome email" (2 steps)
→ Composed: "Onboard new client" (5 steps, merged inputs + launch codes)

Application Engine

0nMCP v1.6.0 introduced the .0n Conversion Engine — portable AI Brain bundles. Import credentials from .env/CSV/JSON, auto-map to 26 services, verify API keys, and generate configs for 7 AI platforms (Claude Desktop, Cursor, Windsurf, Gemini, Continue, Cline, OpenAI). AES-256-GCM encryption with passphrase-only portability.

Frequently Asked Questions

What is 0nMCP?

0nMCP is a universal AI API orchestrator that connects 26 services with 550 tools through the Model Context Protocol (MCP). It lets you control Stripe, Slack, GitHub, Shopify, and more using natural language — no code, no workflows, no configuration required.

How do I install 0nMCP?

Run "npx 0nmcp" in your terminal — that's it. You can also install globally with "npm install -g 0nmcp". Add it to your Claude Desktop config and restart. Setup takes about 2 minutes.

Is 0nMCP free?

Yes, 0nMCP is completely free and open source under the MIT license. You only pay for the API keys of the services you connect (Stripe, Slack, etc). The orchestrator itself costs nothing.

What services does 0nMCP support?

0nMCP supports 26 services: Stripe, SendGrid, Resend, Twilio, Slack, Discord, OpenAI, Airtable, Notion, GitHub, Linear, Shopify, HubSpot, Supabase, Calendly, Google Calendar, and a full CRM integration with 245 dedicated tools.

How is 0nMCP different from Zapier or Make?

0nMCP uses natural language instead of visual workflow builders. Setup takes 2 minutes vs 30+ minutes per Zapier zap. It's free and open source vs $20-$100+/month for Zapier. It offers 550 tools with zero maintenance, while Zapier requires you to rebuild when integrations break.

What is the Model Context Protocol (MCP)?

MCP is an open protocol created by Anthropic that allows AI models like Claude to interact with external tools and services. 0nMCP is an MCP server that provides 550 tools across 26 services through this protocol, making them all accessible via natural language.

Do I need an Anthropic API key?

No. The Anthropic API key is optional — it enables AI-powered multi-step task planning. Without it, 0nMCP still works using keyword-based routing for straightforward single-service requests.

Is my data secure with 0nMCP?

Yes. 0nMCP runs locally on your machine, not in the cloud. API calls go directly to each service. Credentials are stored locally in ~/.0n/connections/ and never sent to third parties. The entire codebase is open source and auditable.

Stop building workflows. Start describing outcomes.

550 tools. 26 services. Zero config. MIT licensed.

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