Concepts
There are a number of shared concepts between the Vonage APIs: the use of JSON Web Tokens (JWTs), signed requests, and webhooks. The guides below explain in detail how to use these elements. (Nexmo is now Vonage).
Guides
- Applications - Security and configuration information you need to connect to Vonage endpoints.
- Authentication – API keys and JSON Web Tokens (JWTs).
- Signing messages – how to cryptographically sign messages and verify message signatures.
- Webhooks – Vonage's API can send data back to your web server via a webhook.
- OpenAPI – All Vonage APIs have OpenAPI descriptions that you can take advantage of in your own development process.
- Glossary – A glossary of common terms used throughout the Vonage platform.
Number format
Within the Vonage APIs, all phone numbers are in E.164 format. This means that numbers:
- Omit both a leading
+and the international access code such as00or001. - Contain no special characters, such as space,
()or-
For example, a US number would have the format 14155550101. A UK number would have the format 447700900123.
If you are unsure how to format the number, the Number Insight API can be used to find correct information about a number.
See also Number format in the Voice API documentation.