# Sinch Payloads API **Canonical:** https://apis.io/apis/sinch/sinch-payloads-api/ **Provider:** Sinch — https://apis.io/providers/sinch/ **Base URL:** https://us.conversation.api.sinch.com **Documentation:** https://developers.sinch.com/docs/conversation/api-reference/conversation Sinch Payloads API is one of 101 APIs that [Sinch](https://apis.io/providers/sinch/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification. This API exposes 73 JSON Schema definitions. Tagged areas include Payloads. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, an AsyncAPI specification, and 73 JSON Schemas. SVAML (Sinch Voice API Markup Language) is a JSON-based markup language used to define call flows and control the behavior of voice calls in the Sinch Voice API. It allows developers to specify commands that dictate how calls are handled, including dialing, playing messages, gathering input, and more. SVAML is used in various contexts within the Voice API, including: - **Call Creation**: When initiating outbound calls via the API. - **Webhooks**: When responding to call events with commands to control the ongoing call flow. - **Batch Calls**: When defining call flows for multiple calls in a batch operation. ## Operations (2) | Method | Path | Summary | |---|---|---| | POST | `/v2/projects/{projectId}/svaml/describe` | Describe the call flow from the SVAML payload | | POST | `/v2/projects/{projectId}/svaml/validate` | Validate a SVAML payload | ## Machine-readable artifacts (107) - **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/openapi/sinch-payloads-api-openapi.yml - **Documentation** — https://developers.sinch.com/docs/conversation - **APIReference** — https://developers.sinch.com/docs/conversation/api-reference/template - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-v2-template-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-v2-list-translations-response-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-v2-list-templates-response-schema.json - **Documentation** — https://developers.sinch.com/docs/est - **APIReference** — https://developers.sinch.com/docs/est/api-reference/est - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-call-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-sip-trunk-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-sip-endpoint-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-ip-range-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-access-control-list-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-number-schema.json - **Documentation** — https://developers.sinch.com/docs/fax - **APIReference** — https://developers.sinch.com/docs/fax/api-reference/fax - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-fax-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-service-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-template-by-name-response-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-update-template-request-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-service-phone-number-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-cover-page-schema.json - **Documentation** — https://developers.sinch.com/docs/number-lookup-api-v2 - **APIReference** — https://developers.sinch.com/docs/number-lookup-api-v2/api-reference/number-lookup-v2 - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-number-lookup-response-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-number-lookup-request-schema.json - **Documentation** — https://developers.sinch.com/docs/numbers - **APIReference** — https://developers.sinch.com/docs/numbers/api-reference/imported-hosting - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-hosting-order-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-qualified-number-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-text-enable-numbers-request-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-hosting-order-number-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-imported-number-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-list-imported-numbers-response-schema.json - **APIReference** — https://developers.sinch.com/docs/numbers/api-reference/numbers - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-active-number-response-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-rent-any-number-request-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-validate-address-response-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-number-order-schema.json - **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/sinch/refs/heads/main/json-schema/sinch-create-number-order-request-schema.json - …and 67 more, listed in full on the page. ## Other Sinch APIs (12) - [Sinch Conversation API](https://apis.io/apis/sinch/sinch-conversation-api/) - [Sinch Voice API](https://apis.io/apis/sinch/sinch-voice-api/) - [Sinch Brands API](https://apis.io/apis/sinch/sinch-brands-api/) - [Sinch MMS API](https://apis.io/apis/sinch/sinch-mms-api/) - [Sinch Batches API](https://apis.io/apis/sinch/sinch-batches-api/) - [Sinch Delivery Reports API](https://apis.io/apis/sinch/sinch-delivery-reports-api/) - [Sinch Inbounds API](https://apis.io/apis/sinch/sinch-inbounds-api/) - [Sinch Groups API](https://apis.io/apis/sinch/sinch-groups-api/) - [Sinch 10DLC Brand Registration API](https://apis.io/apis/sinch/sinch-10dlc-brand-registration-api/) - [Sinch 10DLC Campaign Registration API](https://apis.io/apis/sinch/sinch-10dlc-campaign-registration-api/) - [Sinch Access Control List API](https://apis.io/apis/sinch/sinch-access-control-list-api/) - [Sinch Access Control Lists API](https://apis.io/apis/sinch/sinch-access-control-lists-api/) ## Tags Payloads --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/sinch/sinch-payloads-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/sinch/.