Calimatic Connect handles OAuth, credential storage, token refresh, and API normalization so you can ship integrations in days, not months.
The open alternative to Merge, Paragon, and Nango. Free tier included.
Execute Actions
// One API call to execute any action on any provider
const result = await connect.execute({
connectionId: "conn_abc123",
actionId: "slack.send_message",
inputs: {
channel: "#general",
text: "New order received!"
}
});
// { success: true, output: { messageId: "..." } }Action Registry
// Discover available actions with typed schemas
const actions = await connect.registry.list({
appId: "hubspot"
});
// Returns input schemas your UI can render as formsStop building OAuth flows, token refresh logic, and API adapters from scratch.
One POST to execute any action on any connected provider. Typed input/output schemas.
Pre-built OAuth flows for 200+ providers. AES-256-GCM encrypted token storage with auto-refresh.
Receive events from GitHub, Stripe, Slack, and more. Normalized payload format, HMAC verification.
Make raw authenticated API calls to any provider through Connect. Tokens auto-refreshed on every call.
Typed action definitions with input schemas, dynamic field options, and output mapping.
Automated health checks every 15 minutes. Alerts on degraded or expired connections.
Org admins can require approval before integrations go active. Configurable per category.
Built for SaaS. Each of your customers gets isolated connections, credentials, and usage tracking.
Sign up, create a developer app, and get your API key pair. Takes 30 seconds.
Redirect users to Connect's OAuth flow. We handle consent, token exchange, and encrypted storage.
Call POST /api/execute with the action and inputs. Connect handles auth and retries.
Integration infrastructure shouldn't cost $650/month. Connect gives you the same capabilities at a fraction of the price.
| Feature | Connect | Merge | Paragon | Nango |
|---|---|---|---|---|
| Integrations | 200+ | 220+ | 130+ | 250+ |
| Unified execution API | Yes | Yes | Yes | Partial |
| OAuth + credential vault | Yes | Yes | Yes | Yes |
| Typed action schemas | Yes | Category only | Yes | No |
| Webhook forwarding | Yes | Yes | Yes | Yes |
| API proxy (raw calls) | Yes | No | No | Yes |
| Connection health monitoring | Yes | No | No | No |
| App marketplace | Yes | No | No | No |
| Developer portal | Yes | Yes | Yes | Yes |
| Admin approval flows | Yes | No | No | No |
| Quick automations | Yes | No | Workflows | No |
| Starting price | Free | $650/mo | $500/mo | Free (OSS) |
Pre-built OAuth flows, typed action schemas, and webhook ingestion for every provider.
All tokens and credentials encrypted at rest with authenticated encryption.
Every query filters by tenant. Your customers' data is never co-mingled.
Every API call, webhook, and token refresh logged for compliance.
Merge charges $650/mo. Paragon charges $500/mo. Connect starts free — with paid plans from $9/mo.
Get API keys in 30 seconds. Your first integration is live in under an hour.