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OttoCall

Developers

Programmable calling, SMS and AI.

REST APIs, webhooks, JavaScript and Python SDKs — with quotas, sandbox and detailed logs from day one.

Voice API

Place, receive, control and record calls programmatically.

Messaging API

Send and receive SMS/MMS with delivery reports and inbound webhooks.

AI API

Attach an AI voice agent to any number or campaign with a JSON config.

Numbers API

Provision, port and manage numbers in 50+ countries.

What you get

  • REST + webhooks
  • JavaScript & Python SDKs
  • Sandbox environment
  • Idempotency keys
  • Signed webhook payloads
  • Rate limits documented
  • Detailed request logs
  • OpenAPI spec

Frequently asked questions

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