# API Gateway

> API gateway for calling third-party APIs with managed auth. Use this skill when users want to interact with external services like Slack, HubSpot, Salesforce, Google Workspace, Stripe, Shopify, and more.

- Skill: `aztr0nutzs/api-gateway` (Agent Skill, multi-file: 27 files)
- Install (CLI): `npx skillmds@latest add aztr0nutzs/api-gateway`
- Raw SKILL.md: https://api.skillmd.com/api/skills/aztr0nutzs/api-gateway/raw
- Safety review: pending (external: skill-scanner WARNING, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: aztr0nutzs (https://skillmd.com/u/aztr0nutzs)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/aztr0nutzs/api-gateway

---


# API Gateway

Passthrough proxy for direct access to third-party APIs using managed auth connections. The API gateway lets you call native API endpoints directly.

## Quick Start

```bash
# Native Slack API call
curl -s -X POST 'https://gateway.maton.ai/slack/api/chat.postMessage' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -d '{"channel": "C0123456", "text": "Hello from gateway!"}'
```

## Base URL

```
https://gateway.maton.ai/{app}/{native-api-path}
```

Replace `{app}` with the service name and `{native-api-path}` with the actual API endpoint path.

## Authentication

All requests require the Maton API key in the Authorization header:

```
Authorization: Bearer YOUR_API_KEY
```

The API gateway automatically injects the appropriate OAuth token for the target service.

**Environment Variable:** You can set your API key as the `MATON_API_KEY` environment variable:

```bash
export MATON_API_KEY="YOUR_API_KEY"
```

## Getting Your API Key

1. Sign in or create an account at [maton.ai](https://maton.ai)
2. Go to [maton.ai/settings](https://maton.ai/settings)
3. Click the copy button on the right side of API Key section to copy it

## Connection Management

Connection management uses a separate base URL: `https://ctrl.maton.ai`

### List Connections

```bash
curl -s -X GET 'https://ctrl.maton.ai/connections?app=slack&status=ACTIVE' \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

**Query Parameters (optional):**
- `app` - Filter by service name (e.g., `slack`, `hubspot`, `salesforce`)
- `status` - Filter by connection status (`ACTIVE`, `PENDING`, `FAILED`)

**Response:**
```json
{
  "connections": [
    {
      "connection_id": "21fd90f9-5935-43cd-b6c8-bde9d915ca80",
      "status": "ACTIVE",
      "creation_time": "2025-12-08T07:20:53.488460Z",
      "last_updated_time": "2026-01-31T20:03:32.593153Z",
      "url": "https://connect.maton.ai/?session_token=5e9...",
      "app": "slack",
      "metadata": {}
    }
  ]
}
```

### Create Connection

```bash
curl -s -X POST 'https://ctrl.maton.ai/connections' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -d '{"app": "slack"}'
```

### Get Connection

```bash
curl -s -X GET 'https://ctrl.maton.ai/connections/21fd90f9-5935-43cd-b6c8-bde9d915ca80' \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

**Response:**
```json
{
  "connection": {
    "connection_id": "21fd90f9-5935-43cd-b6c8-bde9d915ca80",
    "status": "ACTIVE",
    "creation_time": "2025-12-08T07:20:53.488460Z",
    "last_updated_time": "2026-01-31T20:03:32.593153Z",
    "url": "https://connect.maton.ai/?session_token=5e9...",
    "app": "slack",
    "metadata": {}
  }
}
```

Open the returned URL in a browser to complete OAuth.

### Delete Connection

```bash
curl -s -X DELETE 'https://ctrl.maton.ai/connections/21fd90f9-5935-43cd-b6c8-bde9d915ca80' \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

### Specifying Connection

If you have multiple connections for the same app, you can specify which connection to use by adding the `Maton-Connection` header with the connection ID:

```bash
curl -s -X POST 'https://gateway.maton.ai/slack/api/chat.postMessage' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Maton-Connection: 21fd90f9-5935-43cd-b6c8-bde9d915ca80' \
  -d '{"channel": "C0123456", "text": "Hello!"}'
```

If omitted, the gateway uses the default (oldest) active connection for that app.

## Supported Services

| Service | App Name | Base URL Proxied |
|---------|----------|------------------|
| Airtable | `airtable` | `api.airtable.com` |
| Apollo | `apollo` | `api.apollo.io` |
| Chargebee | `chargebee` | `{subdomain}.chargebee.com` |
| Google Ads | `google-ads` | `googleads.googleapis.com` |
| Google Analytics Admin | `google-analytics-admin` | `analyticsadmin.googleapis.com` |
| Google Analytics Data | `google-analytics-data` | `analyticsdata.googleapis.com` |
| Google Calendar | `google-calendar` | `www.googleapis.com` |
| Google Docs | `google-docs` | `docs.googleapis.com` |
| Google Drive | `google-drive` | `www.googleapis.com` |
| Google Forms | `google-forms` | `forms.googleapis.com` |
| Gmail | `google-mail` | `gmail.googleapis.com` |
| Google Search Console | `google-search-console` | `www.googleapis.com` |
| Google Sheets | `google-sheets` | `sheets.googleapis.com` |
| HubSpot | `hubspot` | `api.hubapi.com` |
| Jira | `jira` | `api.atlassian.com` |
| JotForm | `jotform` | `api.jotform.com` |
| Notion | `notion` | `api.notion.com` |
| QuickBooks | `quickbooks` | `quickbooks.api.intuit.com` |
| Salesforce | `salesforce` | `{instance}.salesforce.com` |
| Shopify | `shopify` | `{subdomain}.myshopify.com` (GraphQL API) |
| Slack | `slack` | `slack.com` |
| Stripe | `stripe` | `api.stripe.com` |
| Typeform | `typeform` | `api.typeform.com` |
| Xero | `xero` | `api.xero.com` |

See [references/](references/) for detailed routing guides per provider:
- [Airtable](references/airtable.md) - Records, bases, tables
- [Apollo](references/apollo.md) - People search, enrichment, contacts
- [Chargebee](references/chargebee.md) - Subscriptions, customers, invoices
- [Google Ads](references/google-ads.md) - Campaigns, ad groups, GAQL queries
- [Google Analytics Admin](references/google-analytics-admin.md) - Reports, dimensions, metrics
- [Google Analytics Data](references/google-analytics-data.md) - Reports, dimensions, metrics
- [Google Calendar](references/google-calendar.md) - Events, calendars, free/busy
- [Google Docs](references/google-docs.md) - Document creation, batch updates
- [Google Drive](references/google-drive.md) - Files, folders, permissions
- [Google Forms](references/google-forms.md) - Forms, questions, responses
- [Gmail](references/google-mail.md) - Messages, threads, labels
- [Google Search Console](references/google-search-console.md) - Search analytics, sitemaps
- [Google Sheets](references/google-sheets.md) - Values, ranges, formatting
- [HubSpot](references/hubspot.md) - Contacts, companies, deals
- [Jira](references/jira.md) - Issues, projects, JQL queries
- [JotForm](references/jotform.md) - Forms, submissions, webhooks
- [Notion](references/notion.md) - Pages, databases, blocks
- [QuickBooks](references/quickbooks.md) - Customers, invoices, reports
- [Salesforce](references/salesforce.md) - SOQL, sObjects, CRUD
- [Shopify](references/shopify.md) - **Uses GraphQL API (read this first)**, products, orders, customers
- [Slack](references/slack.md) - Messages, channels, users
- [Stripe](references/stripe.md) - Customers, subscriptions, payments
- [Typeform](references/typeform.md) - Forms, responses, insights
- [Xero](references/xero.md) - Contacts, invoices, reports

## Examples

### Slack - Post Message (Native API)

```bash
# Native Slack API: POST https://slack.com/api/chat.postMessage
curl -s -X POST 'https://gateway.maton.ai/slack/api/chat.postMessage' \
  -H 'Content-Type: application/json; charset=utf-8' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -d '{"channel": "C0123456", "text": "Hello!"}'
```

### HubSpot - Create Contact (Native API)

```bash
# Native HubSpot API: POST https://api.hubapi.com/crm/v3/objects/contacts
curl -s -X POST 'https://gateway.maton.ai/hubspot/crm/v3/objects/contacts' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -d '{
    "properties": {
      "email": "john@example.com",
      "firstname": "John",
      "lastname": "Doe"
    }
  }'
```

### Google Sheets - Get Spreadsheet Values (Native API)

```bash
# Native Sheets API: GET https://sheets.googleapis.com/v4/spreadsheets/{id}/values/{range}
curl -s -X GET 'https://gateway.maton.ai/google-sheets/v4/spreadsheets/122BS1sFN2RKL8AOUQjkLdubzOwgqzPT64KfZ2rvYI4M/values/Sheet1!A1:B2' \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

### Salesforce - SOQL Query (Native API)

```bash
# Native Salesforce API: GET https://{instance}.salesforce.com/services/data/v64.0/query?q=...
curl -s -X GET 'https://gateway.maton.ai/salesforce/services/data/v64.0/query?q=SELECT+Id,Name+FROM+Contact+LIMIT+10' \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

### Airtable - List Tables (Native API)

```bash
# Native Airtable API: GET https://api.airtable.com/v0/meta/bases/{id}/tables
curl -s -X GET 'https://gateway.maton.ai/airtable/v0/meta/bases/appgqan2NzWGP5sBK/tables' \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

### Notion - Query Database (Native API)

```bash
# Native Notion API: POST https://api.notion.com/v1/data_sources/{id}/query
curl -s -X POST 'https://gateway.maton.ai/notion/v1/data_sources/23702dc5-9a3b-8001-9e1c-000b5af0a980/query' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Notion-Version: 2025-09-03' \
  -d '{}'
```

### Stripe - List Customers (Native API)

```bash
# Native Stripe API: GET https://api.stripe.com/v1/customers
curl -s -X GET 'https://gateway.maton.ai/stripe/v1/customers?limit=10' \
  -H 'Authorization: Bearer YOUR_API_KEY'
```

## Code Examples

### JavaScript (Node.js)

```javascript
const response = await fetch('https://gateway.maton.ai/slack/api/chat.postMessage', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': `Bearer ${process.env.MATON_API_KEY}`
  },
  body: JSON.stringify({ channel: 'C0123456', text: 'Hello!' })
});
```

### Python

```python
import os
import requests

response = requests.post(
    'https://gateway.maton.ai/slack/api/chat.postMessage',
    headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'},
    json={'channel': 'C0123456', 'text': 'Hello!'}
)
```

## Error Handling

| Status | Meaning |
|--------|---------|
| 400 | Missing connection for the requested app |
| 401 | Invalid or missing Maton API key |
| 429 | Rate limited (10 requests/second per account) |
| 4xx/5xx | Passthrough error from the target API |

Errors from the target API are passed through with their original status codes and response bodies.

## Rate Limits

- 10 requests per second per account
- Target API rate limits also apply

## Tips

1. **Use native API docs**: Refer to each service's official API documentation for endpoint paths and parameters.

2. **Headers are forwarded**: Custom headers (except `Host` and `Authorization`) are forwarded to the target API.

3. **Query params work**: URL query parameters are passed through to the target API.

4. **All HTTP methods supported**: GET, POST, PUT, PATCH, DELETE are all supported.

5. **QuickBooks special case**: Use `:realmId` in the path and it will be replaced with the connected realm ID.

## Optional

- [Github](https://github.com/maton-ai/api-gateway-skill)
- [Documentation](https://www.maton.ai/docs/api-reference)
- [Community](https://discord.com/invite/dBfFAcefs2)