Covebyte CLI
Buy numbers, tail logs and forward webhooks to localhost from your terminal.
Learn more Developers
Build calling, messaging and AI into anything.
Clean REST APIs, real-time webhooks and SDKs for every major language. Go from API key to first call in under five minutes.
99.99%API uptime
<100msmedian response
8official SDKs
Quickstart
Your first call in three steps
Copy, paste, ring. Then swap in any language you like.
1
Install the SDK
npm install covebyte2
Add your API key
export COVEBYTE_KEY=cb_test_••••3
Place your first call
await client.calls.create({ to, from })import Covebyte from 'covebyte';
const client = new Covebyte(process.env.COVEBYTE_KEY);
// Place an outbound call with an IVR flow
const call = await client.calls.create({
to: '+14155550123',
from: '+18885550100',
url: 'https://example.com/ivr.xml',
});
console.log(call.id); // call_8f2k... SDKs
Speak your language
Official, open-source libraries with typed responses, retries and pagination built in.
JSNode.jsv3 · stable
PYPythonv3 · stable
PHPPHPv3 · stable
JVJavav3 · stable
GOGov3 · stable
C#.NETv3 · stable
RBRubyv3 · stable
>_cURL / RESTv3 · stable
API reference
Predictable, resource-based REST
JSON in, JSON out. Consistent errors, idempotency keys and versioned endpoints.
POST
/v1/callsPlace an outbound callGET
/v1/calls/{id}Retrieve a call and its recordingPOST
/v1/messagesSend SMS, MMS, RCS or WhatsAppGET
/v1/numbers/availableSearch numbers by country and areaPOST
/v1/agentsCreate an AI voice agentPOST
/v1/verifySend a one-time passcodePOST
/v1/calls201 Created{
"id": "call_8f2kq1x9",
"status": "ringing",
"direction": "outbound",
"to": "+14155550123",
"from": "+18885550100",
"recording": true,
"created_at": "2026-11-04T18:02:11Z",
"links": {
"self": "/v1/calls/call_8f2kq1x9",
"events": "/v1/calls/call_8f2kq1x9/events"
}
} Webhooks
Every event, the moment it happens
Subscribe to calls, messages, recordings and AI agent actions. Signed payloads, automatic retries and a replay log for every delivery.
- Signed and verifiedHMAC signatures on every payload.
- Retries and replayMissed an event? Replay it from the dashboard.
- Low latencyEvents delivered in milliseconds, worldwide.
Tools
Everything around the API, too
The tools you need to build, test and run in production with confidence.
Postman collection
Every endpoint, pre-filled with examples. Import it and start sending requests.
Learn moreFree sandbox
Test credentials simulate calls and messages without charges or real phones.
Learn moreStatus & uptime
Live health of every region and product, with incident history.
Learn more Guides
Start from a working example
Step-by-step tutorials for the things teams build most.
Ship your first integration today.
Free test credits, no credit card. Our engineers are on hand if you get stuck.
SDKs are open source · OpenAPI 3.1 spec · Versioned and backwards compatible