> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes. # WhatsApp Routes ## API Docs - WhatsApp Routes [Assign Resource to WhatsApp number](https://signalwire.com/docs/apis/rest/whatsapp-routes/assign-resource-whatsapp-number.md) ## OpenAPI Specification The raw OpenAPI 3.1 specification for this API is available at: - [OpenAPI JSON](https://signalwire.com/docs/apis/rest/whatsapp-routes/openapi.json) - [OpenAPI YAML](https://signalwire.com/docs/apis/rest/whatsapp-routes/openapi.yaml)