API Integration — Connect Instavoip to your stack

Seamless, secure and scalable REST & Webhook APIs that let you integrate voice, SMS, numbers, and realtime events with your CRM, billing or platform — fast.

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Secure Auth

OAuth2 & API keys, TLS everywhere, role-based access control.

Low Latency

Carrier-grade endpoints and distributed edge routing for fast call setup.

Developer Friendly

Clean REST endpoints, SDKs, sandbox and live examples.

Request Sandbox Access
View API Docs
No credit card required • Typical access in 1-2 business days

What our API gives you

  • Programmatic calls: make, receive and route calls via REST endpoints.
  • Messaging: send transactional & promotional SMS with delivery reports and callbacks.
  • Number management: buy, port and configure DID & TFN numbers via API.
  • Webhooks & events: realtime events for calls, messages, and billing.
  • Reporting API: pull analytics, costs and call detail records (CDR).

Key capabilities

Flexible routing

Dynamic dialplans and weighted routing per region.

Fraud protections

Realtime fraud heuristics and rate limiting.

Realtime analytics

Webhooks + dashboards for live metrics.

SDKs & samples

Node / PHP / Python examples and Postman collection.

Use cases

CRM Integration

Pop call, log CDR, trigger SMS follow-ups and update customer records automatically.

Call Center Automation

Automate IVR, dynamic queueing, and recordings ingestion into your workflow.

Number Management

Programmatically rent numbers, port and route to local agents.

Integration process

1
Request access

Sign up for sandbox or request production credentials.

2
Test & build

Use SDKs, sample flows and Postman collection to validate use-cases.

3
Go live

Move to production with number provisioning and SLA options.

Technical overview

API types
  • REST API: /v1/calls, /v1/sms, /v1/numbers, /v1/reports
  • Webhooks: event callbacks for calls, deliveries and billing
  • Realtime: optional websocket for low-latency events
Authentication

OAuth2 client credentials + API keys. All endpoints use TLS1.2+ and HSTS.

Rate limits & quotas

Per-account rate limits, configurable burst allowances for enterprise plans. See docs for exact numbers.

Sample cURL
curl -X POST https://api.instavoip.net/v1/sms \
 -H "Authorization: Bearer <API_KEY>" \
 -d "to=+1234567890" -d "message=Hello from Instavoip"
Full API docs

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Customer stories

Frequently asked questions

Sandbox access is usually provisioned within 24 hours. Production keys require account verification.

Yes — Node, PHP, Python SDKs, plus Postman collection and code samples are available in docs.

Enterprise plans include uptime SLAs, prioritized support and dedicated routing — contact sales for details.

Ready to integrate Instavoip into your platform?

Request sandbox keys or schedule a technical walkthrough — our engineers will help you ship fast.

Request Demo Read Docs