{
  "info": {
    "_postman_id": "36e63334-940c-446c-aed9-cae4135ed996",
    "name": "Kaleyra CPaaS Messages Voice API",
    "description": "Kaleyra (a Tata Communications company) omnichannel CPaaS REST API for SMS, WhatsApp, RCS, Voice, and Verify (OTP), plus the Kaleyra Video REST API. Requests authenticate with the `api-key` header and address an account by its SID in the URL path. Regional hosts serve India, APAC/SEA, and EU data residency.\n\nContact Support:\n Name: Kaleyra Support",
    "schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
    "createdAt": "2026-07-28T01:59:50.000Z",
    "updatedAt": "2026-07-28T01:59:50.000Z",
    "lastUpdatedBy": "35240",
    "uid": "35240-36e63334-940c-446c-aed9-cae4135ed996"
  },
  "item": [
    {
      "name": "v1",
      "item": [
        {
          "name": "{sid}",
          "item": [
            {
              "name": "voice",
              "item": [
                {
                  "name": "click-to-call",
                  "item": [
                    {
                      "name": "Initiate a click-to-call bridged voice call",
                      "id": "9e2c8870-aaf3-4a75-a1a7-766bd1c9521f",
                      "protocolProfileBehavior": {
                        "disableBodyPruning": true
                      },
                      "request": {
                        "method": "POST",
                        "header": [
                          {
                            "key": "Content-Type",
                            "value": "application/x-www-form-urlencoded"
                          },
                          {
                            "key": "Accept",
                            "value": "application/json"
                          }
                        ],
                        "body": {
                          "mode": "urlencoded",
                          "urlencoded": [
                            {
                              "description": "(Required) First leg number (called first).",
                              "key": "from",
                              "value": "<string>"
                            },
                            {
                              "description": "(Required) Second leg number, bridged after the first answers.",
                              "key": "to",
                              "value": "<string>"
                            },
                            {
                              "key": "caller_id",
                              "value": "<string>"
                            },
                            {
                              "key": "callback_url",
                              "value": "<uri>"
                            }
                          ]
                        },
                        "url": {
                          "raw": "{{baseUrl}}/v1/:sid/voice/click-to-call",
                          "host": [
                            "{{baseUrl}}"
                          ],
                          "path": [
                            "v1",
                            ":sid",
                            "voice",
                            "click-to-call"
                          ],
                          "variable": [
                            {
                              "id": "c55012c4-a6e6-4074-828b-d3970c0d9eba",
                              "key": "sid",
                              "value": "<string>",
                              "description": "(Required) Account SID (Security Identifier) issued by kaleyra.io."
                            }
                          ]
                        },
                        "description": "Places an outbound call to `from`, then dials `to` and bridges the two legs over the caller ID / bridge number."
                      },
                      "response": [
                        {
                          "id": "c128a9fb-ffbc-4f74-947f-1d0ffee86e6e",
                          "name": "Call initiated.",
                          "originalRequest": {
                            "method": "POST",
                            "header": [
                              {
                                "key": "Content-Type",
                                "value": "application/x-www-form-urlencoded"
                              },
                              {
                                "key": "Accept",
                                "value": "application/json"
                              },
                              {
                                "description": "Added as a part of security scheme: apikey",
                                "key": "api-key",
                                "value": "<API Key>"
                              }
                            ],
                            "body": {
                              "mode": "urlencoded",
                              "urlencoded": [
                                {
                                  "description": "(Required) First leg number (called first).",
                                  "key": "from",
                                  "value": "<string>"
                                },
                                {
                                  "description": "(Required) Second leg number, bridged after the first answers.",
                                  "key": "to",
                                  "value": "<string>"
                                },
                                {
                                  "key": "caller_id",
                                  "value": "<string>"
                                },
                                {
                                  "key": "callback_url",
                                  "value": "<uri>"
                                }
                              ]
                            },
                            "url": {
                              "raw": "{{baseUrl}}/v1/:sid/voice/click-to-call",
                              "host": [
                                "{{baseUrl}}"
                              ],
                              "path": [
                                "v1",
                                ":sid",
                                "voice",
                                "click-to-call"
                              ],
                              "variable": [
                                {
                                  "key": "sid"
                                }
                              ]
                            }
                          },
                          "status": "OK",
                          "code": 200,
                          "_postman_previewlanguage": "json",
                          "header": [
                            {
                              "key": "Content-Type",
                              "value": "application/json"
                            }
                          ],
                          "cookie": [],
                          "responseTime": null,
                          "body": "{\n  \"id\": \"<string>\",\n  \"status\": \"<string>\"\n}",
                          "createdAt": "2026-07-28T01:59:50.000Z",
                          "updatedAt": "2026-07-28T01:59:50.000Z",
                          "uid": "35240-c128a9fb-ffbc-4f74-947f-1d0ffee86e6e"
                        },
                        {
                          "id": "d9da09ed-4d0c-4267-88a8-6cd742442b04",
                          "name": "Missing or invalid api-key header.",
                          "originalRequest": {
                            "method": "POST",
                            "header": [
                              {
                                "key": "Content-Type",
                                "value": "application/x-www-form-urlencoded"
                              },
                              {
                                "key": "Accept",
                                "value": "application/json"
                              },
                              {
                                "description": "Added as a part of security scheme: apikey",
                                "key": "api-key",
                                "value": "<API Key>"
                              }
                            ],
                            "body": {
                              "mode": "urlencoded",
                              "urlencoded": [
                                {
                                  "description": "(Required) First leg number (called first).",
                                  "key": "from",
                                  "value": "<string>"
                                },
                                {
                                  "description": "(Required) Second leg number, bridged after the first answers.",
                                  "key": "to",
                                  "value": "<string>"
                                },
                                {
                                  "key": "caller_id",
                                  "value": "<string>"
                                },
                                {
                                  "key": "callback_url",
                                  "value": "<uri>"
                                }
                              ]
                            },
                            "url": {
                              "raw": "{{baseUrl}}/v1/:sid/voice/click-to-call",
                              "host": [
                                "{{baseUrl}}"
                              ],
                              "path": [
                                "v1",
                                ":sid",
                                "voice",
                                "click-to-call"
                              ],
                              "variable": [
                                {
                                  "key": "sid"
                                }
                              ]
                            }
                          },
                          "status": "Unauthorized",
                          "code": 401,
                          "_postman_previewlanguage": "json",
                          "header": [
                            {
                              "key": "Content-Type",
                              "value": "application/json"
                            }
                          ],
                          "cookie": [],
                          "responseTime": null,
                          "body": "{\n  \"error\": \"<string>\",\n  \"message\": \"<string>\"\n}",
                          "createdAt": "2026-07-28T01:59:50.000Z",
                          "updatedAt": "2026-07-28T01:59:50.000Z",
                          "uid": "35240-d9da09ed-4d0c-4267-88a8-6cd742442b04"
                        }
                      ],
                      "createdAt": "2026-07-28T01:59:50.000Z",
                      "updatedAt": "2026-07-28T01:59:50.000Z",
                      "uid": "35240-9e2c8870-aaf3-4a75-a1a7-766bd1c9521f"
                    }
                  ],
                  "id": "a85aef96-0c63-4c4f-bcfb-fb36fae6768e",
                  "createdAt": "2026-07-28T01:59:50.000Z",
                  "updatedAt": "2026-07-28T01:59:50.000Z",
                  "uid": "35240-a85aef96-0c63-4c4f-bcfb-fb36fae6768e"
                }
              ],
              "id": "67f74415-3b4b-4e89-9790-7ff4371c705e",
              "createdAt": "2026-07-28T01:59:50.000Z",
              "updatedAt": "2026-07-28T01:59:50.000Z",
              "uid": "35240-67f74415-3b4b-4e89-9790-7ff4371c705e"
            }
          ],
          "id": "8011b925-4ce7-47c9-b674-d41064a5c50b",
          "createdAt": "2026-07-28T01:59:50.000Z",
          "updatedAt": "2026-07-28T01:59:50.000Z",
          "uid": "35240-8011b925-4ce7-47c9-b674-d41064a5c50b"
        }
      ],
      "id": "4fb4887d-0645-412f-b905-785cec348d10",
      "createdAt": "2026-07-28T01:59:50.000Z",
      "updatedAt": "2026-07-28T01:59:50.000Z",
      "uid": "35240-4fb4887d-0645-412f-b905-785cec348d10"
    }
  ],
  "auth": {
    "type": "apikey",
    "apikey": [
      {
        "key": "key",
        "value": "api-key",
        "type": "string"
      },
      {
        "key": "value",
        "value": "{{apiKey}}",
        "type": "string"
      },
      {
        "key": "in",
        "value": "header",
        "type": "string"
      }
    ]
  },
  "variable": [
    {
      "key": "baseUrl",
      "value": "https://api.kaleyra.io"
    }
  ]
}