Avaya

Avaya Asynchronous Messages API

Messages related to non-session based communication with the contact center are considered to be asynchronous messages. Based on the information passed, the contact center will either model this against existing entities like conversation, engagement or dialog, or else new entities will be created.

Documentation GitHub OpenAPI

Operations 2

POST /accounts/{accountId}/attachments Upload Attachments #

POST /accounts/{accountId}/messages Send Async Message #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This API

curl "https://apis.io/api/v1/apis/avaya-asynchronous-messages-api"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

openapi: 3.2.0
info:
  title: Digital - Custom Messaging Asynchronous Messages API
  description: Send messages related to non-session (asynchronous) based communication.
  contact:
    name: Avaya API Team
    url: https://developers.avayacloud.com/onecloud-ccaas
    email: apiteam@avaya.com
  license:
    name: Avaya Software Development Kit (SDK) Software License Terms
    url: http://support.avaya.com/css/P8/documents/101038288
  version: 1.0.4
servers:
- url: '{protocol}://{server}{basePath}'
  description: Open API
  variables:
    protocol:
      enum:
      - https
      default: https
    server:
      default: HOST-REGION.api.avayacloud.com
    basePath:
      default: /api/digital/custom-messaging/v1
- url: '{protocol}://{server}{basePath}/async/{apiVersion}'
  description: Internal Connector API
  variables:
    protocol:
      enum:
      - https
      default: https
    server:
      default: HOST-REGION.cc.avayacloud.com
    basePath:
      default: /api/digital
    apiVersion:
      enum:
      - v1
      default: v1
- url: '{protocol}://{server}:{port}'
  description: Internal API
  variables:
    protocol:
      enum:
      - http
      - https
      default: http
    server:
      default: async-gateway
    port:
      enum:
      - '80'
      - '443'
      default: '80'
security:
- {}
- BearerAuth: []
  AppKey: []
tags:


# --- truncated at 32 KB (42 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/avaya/refs/heads/main/openapi/avaya-asynchronous-messages-api-openapi.yml