Messaging via API
Send SMS and WhatsApp from your processes: confirmations, OTP, reminders and alerts.
API to integrate TelHarbor into your CRM and systems.
Service overview
Send SMS and WhatsApp and originate calls (click-to-dial) directly from your applications, with secure keys, permissions, allowed IPs and limits.
Automate your communications from your own systems.
Your CRM, website or app connects only to the TelHarbor API, which validates, applies security limits and runs the action on the right service.
Click-to-dial
Originate calls from your CRM: it first rings the agent and, on answer, dials the destination.
Secure by design
Keys with per-service permissions, allowed IPs, limits and logging of every request.
How it works
From your system to the action, securely.
Your system never connects directly to the phone network or the providers: everything goes through the TelHarbor API.
1. Your system calls
Your CRM or app makes a request over HTTPS with your API key.
2. TelHarbor validates
It checks the key, the allowed IP, permissions and usage limits.
3. Runs the action
Sends the SMS or WhatsApp through the providers, or originates the call on your PBX.
4. Everything is logged
Each action is stored in the usage log and messages in the inbox and history.
Use cases
Connect communications to what your business already uses.
Automated notifications
Order, appointment, payment and status confirmations sent from your system.
Verification (OTP)
One-time codes via SMS or WhatsApp for authentication.
Click-to-dial in the CRM
Your agents call with one click, without typing numbers.
Operational alerts
Your platform triggers alerts to customers or teams on events.
Integrate TelHarbor into your systems.
Request API access; the technical documentation is delivered with your key.
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The API powers the rest of the TelHarbor platform.
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Messaging for notifications, OTP and alerts.
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Messaging channel for customers and operations.
View serviceOmnichannel Bot
Automate service across voice, WhatsApp, SMS and email.
View serviceContact Center
Queues, agents, wallboard and call center reports.
View solution
Why the API
Integrate TelHarbor with your systems.
Send messages and originate calls from your CRM, ERP or apps, with a secure, documented API.
Integration
Connect SMS, WhatsApp and calls to your own systems.
Multichannel
One access for SMS, WhatsApp and click-to-dial.
Security
Per-client keys, allowed IPs, scopes and usage limits.
Traceability
Usage logging and a test console for each key.
Features
An API ready for production.
Endpoints, keys and documentation managed by TelHarbor.
Send SMS and WhatsApp
Click-to-dial
Originate calls on your PBX from your applications.
Keys and scopes
API keys with scopes, assigned numbers and IP allowlist.
Rate-limit and quotas
Control usage with limits and quotas per key.
Usage logging
Every send is stored in the history and usage log.
Documentation
Guides and a test console to integrate fast.
See the API plan.
API access with a clear monthly price; usage draws from the channel bundle.
FAQ
Frequently asked questions about the API
What can I do with the TelHarbor API?
Send SMS and WhatsApp and originate calls (click-to-dial) from your CRM, website or app, automatically and securely.
How does authentication work?
With an API key that TelHarbor enables with your contracted services, permissions (scopes), allowed IPs and usage limits. Requests travel over HTTPS.
Is it safe to connect my system?
Yes. Your system connects only to the TelHarbor API, never directly to the phone network or the providers. Every request is validated and logged.
Does it include documentation?
Yes. Technical documentation with endpoints and examples is delivered with your API key.
Does click-to-dial work with my PBX?
Click-to-dial originates the call on the PBX associated with your key; it first rings the agent extension and, on answer, dials the destination.
What can I integrate with the API?
You can send SMS and WhatsApp and originate calls (click-to-dial) from your CRM, ERP or apps.
How does the API authenticate?
With a per-client API key, with scopes, assigned numbers and allowed IPs, plus usage limits.
How much does the API cost?
It has a monthly access fee; messages draw from the channel bundle. See the plan at telharbor.com/en/plans/.