Some simple examples using cURL (Windows Powershell users might prefer Invoke-WebRequest although this requires slightly different syntax). You may also want to try Postman, an app for Windows, MacOS, and Linux that enables you to visually create requests.
Getting a user list using authentication via the query string and the default JSON output format
$ curl http://pbx.example.org/apis/pbx/users?key=8d0a0704a96db1773fcb52db2f3e0979 [{"username": "admin", "uuid": "828638d5-90c5-3abf-9609-7bb0c85ecd6d", "full_name": null, "primary_phone": null}, {"username": "501", "uuid": "26d6d6de-5050-3401-adfa-0967bb414213", "full_name": null, "primary_phone": null}, {"username": "303", "uuid": "c506e9b6-cdbf-360a-b022-b0ff2ad3b4de", "full_name": "John Brown", "primary_phone": null}, {"username": "300", "uuid": "092587dd-3b6f-3cfe-a769-654a0c1e5caa", "full_name": "phone 300", "primary_phone": "92913299-f2d4-3a67-98ca-c76234d3d58f"}, {"username": "500", "uuid": "ad2852c1-5509-3068-b510-f98747b430a1", "full_name": null, "primary_phone": null}, {"username": "301", "uuid": "396edcb6-2818-3d7c-9056-029b972be3c4", "full_name": "phone 301", "primary_phone": "9a899b91-3002-3565-9706-1bcff54589f4"}, {"username": "302", "uuid": "617e8555-b25a-35c2-b1c6-63cf8a867c0f", "full_name": "John Black", "primary_phone": "97fb3488-e763-319d-9db3-f0345ae046ad"}]Getting a user list using authentication via the query string and XML output format
$ curl http://pbx.example.org/apis/pbx/users.xml?key=8d0a0704a96db1773fcb52db2f3e0979 admin 828638d5-90c5-3abf-9609-7bb0c85ecd6d 501 26d6d6de-5050-3401-adfa-0967bb414213 John Brown 303 c506e9b6-cdbf-360a-b022-b0ff2ad3b4de phone 300 92913299-f2d4-3a67-98ca-c76234d3d58f 300 092587dd-3b6f-3cfe-a769-654a0c1e5caa 500 ad2852c1-5509-3068-b510-f98747b430a1 phone 301 9a899b91-3002-3565-9706-1bcff54589f4 301 396edcb6-2818-3d7c-9056-029b972be3c4 John Black 97fb3488-e763-319d-9db3-f0345ae046ad 302 617e8555-b25a-35c2-b1c6-63cf8a867c0fUsing HTTP headers for authentication and output format selection
$ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/xml' http://pbx.example.org/apis/pbx/users admin 828638d5-90c5-3abf-9609-7bb0c85ecd6d 501 26d6d6de-5050-3401-adfa-0967bb414213 John Brown 303 c506e9b6-cdbf-360a-b022-b0ff2ad3b4de phone 300 92913299-f2d4-3a67-98ca-c76234d3d58f 300 092587dd-3b6f-3cfe-a769-654a0c1e5caa 500 ad2852c1-5509-3068-b510-f98747b430a1 phone 301 9a899b91-3002-3565-9706-1bcff54589f4 301 396edcb6-2818-3d7c-9056-029b972be3c4 John Black 97fb3488-e763-319d-9db3-f0345ae046ad 302 617e8555-b25a-35c2-b1c6-63cf8a867c0fGetting a user status
$ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/json' http://pbx.example.org/apis/pbx/users/396edcb6-2818-3d7c-9056-029b972be3c4 {"username": "301", "dnd": false, "uuid": "396edcb6-2818-3d7c-9056-029b972be3c4", "primary_phone": "9a899b91-3002-3565-9706-1bcff54589f4", "phone": "9a899b91-3002-3565-9706-1bcff54589f4", "full_name": "phone 301", "call_forward": null, "cw": false}Getting a phone list
$ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/json' http://pbx.example.org/apis/pbx/phones [{"phone_username": "w7tny", "hot_desk": false, "type": "Snom 300 (V7 firmware)", "uuid": "92913299-f2d4-3a67-98ca-c76234d3d58f", "name": "telefon 300"}, {"phone_username": "u215e", "hot_desk": true, "type": "Snom 300 (V8 firmware)", "uuid": "9a899b91-3002-3565-9706-1bcff54589f4", "name": "telefon 301"}]Getting a phone status
$ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/json' http://pbx.example.org/apis/pbx/phones/9a899b91-3002-3565-9706-1bcff54589f4 {"status": "Idle", "uuid": "9a899b91-3002-3565-9706-1bcff54589f4", "type": "Snom 300 (V8 firmware)", "status_code": 0, "phone_username": "u215e", "hot_desk_user": "ad2852c1-5509-3068-b510-f98747b430a1", "hot_desk": true, "name": "telefon 301"}Fetching events (JSON)
$ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/json' 'http://pbx.example.org/apis/pbx/events?limit=10' [{"status": "In Use", "event_type": "phone status update", "seq": 0, "status_code": 1, "phone_uuid": "9a899b91-3002-3565-9706-1bcff54589f4", "timestamp": "2012-03-22T13:48:52Z"}, {"status": "Ringing", "event_type": "phone status update", "seq": 1, "status_code": 8, "phone_uuid": "92913299-f2d4-3a67-98ca-c76234d3d58f", "timestamp": "2012-03-22T13:48:52Z"}, {"status": "In Use", "event_type": "phone status update", "seq": 2, "status_code": 1, "phone_uuid": "92913299-f2d4-3a67-98ca-c76234d3d58f", "timestamp": "2012-03-22T13:48:53Z"}, {"status": "Idle", "event_type": "phone status update", "seq": 3, "status_code": 0, "phone_uuid": "92913299-f2d4-3a67-98ca-c76234d3d58f", "timestamp": "2012-03-22T13:48:55Z"}, {"status": "Idle", "event_type": "phone status update", "seq": 4, "status_code": 0, "phone_uuid": "9a899b91-3002-3565-9706-1bcff54589f4", "timestamp": "2012-03-22T13:48:56Z"}] $ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/json' 'http://pbx.example.org/apis/pbx/events?limit=10&last=4' [] $ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/json' 'http://pbx.example.org/apis/pbx/events?limit=10&last=4' [{"status": "In Use", "event_type": "phone status update", "seq": 5, "status_code": 1, "phone_uuid": "9a899b91-3002-3565-9706-1bcff54589f4", "timestamp": "2012-03-22T14:23:10Z"}, {"status": "Idle", "event_type": "phone status update", "seq": 6, "status_code": 0, "phone_uuid": "9a899b91-3002-3565-9706-1bcff54589f4", "timestamp": "2012-03-22T14:23:10Z"}, {"status": "In Use", "event_type": "phone status update", "seq": 7, "status_code": 1, "phone_uuid": "9a899b91-3002-3565-9706-1bcff54589f4", "timestamp": "2012-03-22T14:23:16Z"}, {"phone_uuid": "9a899b91-3002-3565-9706-1bcff54589f4", "timestamp": "2012-03-22T14:23:19Z", "user_uuid": "ad2852c1-5509-3068-b510-f98747b430a1", "event_type": "user logged out", "seq": 8}, {"status": "Idle", "event_type": "phone status update", "seq": 9, "status_code": 0, "phone_uuid": "9a899b91-3002-3565-9706-1bcff54589f4", "timestamp": "2012-03-22T14:23:19Z"}]Fetching events (XML)
$ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/xml' 'http://pbx.example.org/apis/pbx/events?limit=3' phone status update 9a899b91-3002-3565-9706-1bcff54589f4 7 In Use 1 2012-03-22T14:23:16Z user logged out 9a899b91-3002-3565-9706-1bcff54589f4 8 2012-03-22T14:23:19Z ad2852c1-5509-3068-b510-f98747b430a1 phone status update 9a899b91-3002-3565-9706-1bcff54589f4 9 Idle 0 2012-03-22T14:23:19Z $ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/xml' 'http://pbx.example.org/apis/pbx/events?limit=3&last=9' $ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/xml' 'http://pbx.example.org/apis/pbx/events?limit=3&last=9' $ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/xml' 'http://pbx.example.org/apis/pbx/events?limit=3&last=9' phone status update 9a899b91-3002-3565-9706-1bcff54589f4 10 In Use 1 2012-03-22T14:26:31Z $ curl -u apiKey:8d0a0704a96db1773fcb52db2f3e0979 -H 'Accept: application/xml' 'http://pbx.example.org/apis/pbx/events?limit=3&last=10' user logged in 9a899b91-3002-3565-9706-1bcff54589f4 11 2012-03-22T14:26:49Z ad2852c1-5509-3068-b510-f98747b430a1 phone status update 9a899b91-3002-3565-9706-1bcff54589f4 12 Idle 0 2012-03-22T14:26:49ZFetching calls (JSON)
$curl -u apiKey:fb1c747701f2d21c35f4c7bc1f8ffebe -H 'accept: application/json' 'http://pbx.example.org/apis/pbx/acd/stats?calls=1' {"queues": [{"service_level": 0.0, "calls_waiting": 1, "available_agents": 0, "talk_time": 0, "longest_hold_time": 20, "service_level_interval": 0, "name": "niekumam", "answered": 0, "all_agents": 4, "aborted": 2, "free_agents": 0, "calls": [{"callerid_name": "FakeSip Linphone", "position": 1, "callerid_num": "123456", "wait": 20}], "hold_time": 0, "logged_in_agents": 1, "uuid": "ef382287-2c8c-32ca-a91f-b2216498fa17"}]}Fetching calls (XML)
$curl -u apiKey:fb1c747701f2d21c35f4c7bc1f8ffebe -H 'accept: application/xml' 'http://pbx.example.org/apis/pbx/acd/stats.xml?calls=1' 1 11 0 0 0 2 0.0 4 1 0 0 FakeSip Linphone 123456 1 11Fetching agents (JSON)
$curl -u apiKey:fb1c747701f2d21c35f4c7bc1f8ffebe -H 'accept: application/json' 'http://pbx.example.org/apis/pbx/acd/stats?agents=1' {"queues": [{"service_level": 0.0, "calls_waiting": 0, "available_agents": 2, "talk_time": 0, "longest_hold_time": 0, "service_level_interval": 0, "name": "niekumam", "answered": 0, "all_agents": 4, "aborted": 2, "free_agents": 2, "agents": [{"status": "Unavailable", "paused": true, "last_call": "", "name": "304", "penalty": 1, "status_code": 5, "user_uuid": "8ff48136-df77-388e-ab08-64268a221371", "calls_taken": 0}, {"status": "Unavailable", "paused": true, "last_call": "", "name": "302", "penalty": 1, "status_code": 5, "user_uuid": "52b1e37c-9184-3e7a-b8b7-eb909bef0035", "calls_taken": 0}, {"status": "Not In Use", "paused": false, "last_call": "", "name": "301", "penalty": 1, "status_code": 1, "user_uuid": "cdad7e96-fa5f-3210-8641-20ed441d491b", "calls_taken": 0}, {"status": "Not In Use", "paused": false, "last_call": "", "name": "300", "penalty": 1, "status_code": 1, "user_uuid": "a8258b12-a203-3ccb-8365-95f40bdff152", "calls_taken": 0}], "hold_time": 0, "logged_in_agents": 2, "uuid": "ef382287-2c8c-32ca-a91f-b2216498fa17"}]}Fetching agents (XML)
$curl -u apiKey:fb1c747701f2d21c35f4c7bc1f8ffebe -H 'accept: application/xml' 'http://pbx.example.org/apis/pbx/acd/stats.xml?agents=1' 1 1 0 0 1 1 0.0 2 2 1 1 1 2013-12-19T11:59:15 301 False 1 Not In Use 1 cdad7e96-fa5f-3210-8641-20ed441d491b 0 300 False 1 Ringing 6 a8258b12-a203-3ccb-8365-95f40bdff152Fetching call statistics for a specific queue (JSON)
$ curl -u apiKey:fb1c747701f2d21c35f4c7bc1f8ffebe -H 'accept: application/json' http://pbx.example.org/apis/pbx/acd/ef382287-2c8c-32ca-a91f-b2216498fa17/stats {"service_level": 0.0, "calls_waiting": 1, "available_agents": 2, "talk_time": 0, "longest_hold_time": 72, "service_level_interval": 0, "name": "niekumam", "answered": 0, "all_agents": 4, "aborted": 4, "free_agents": 2, "hold_time": 0, "logged_in_agents": 2, "uuid": "ef382287-2c8c-32ca-a91f-b2216498fa17"}Fetching call statistics for a specific queue (XML)
$ curl -u apiKey:fb1c747701f2d21c35f4c7bc1f8ffebe -H 'accept: application/xml' http://pbx.example.org/apis/pbx/acd/ef382287-2c8c-32ca-a91f-b2216498fa17/stats 1 59 0 0 0 4 0.0 4 2 1 1