Telnyx Texml - Python

Installation

pip install telnyx

Setup

import os
from telnyx import Telnyx

client = Telnyx(
    api_key=os.environ.get("TELNYX_API_KEY"),  # This is the default and can be omitted
)

All examples below assume client is already initialized as shown above.

Error Handling

All API calls can fail with network errors, rate limits (429), validation errors (422), or authentication errors (401). Always handle errors in production code:

import telnyx

try:
    result = client.messages.send(to="+13125550001", from_="+13125550002", text="Hello")
except telnyx.APIConnectionError:
    print("Network error — check connectivity and retry")
except telnyx.RateLimitError:
    # 429: rate limited — wait and retry with exponential backoff
    import time
    time.sleep(1)  # Check Retry-After header for actual delay
except telnyx.APIStatusError as e:
    print(f"API error {e.status_code}: {e.message}")
    if e.status_code == 422:
        print("Validation error — check required fields and formats")

Common error codes: 401 invalid API key, 403 insufficient permissions, 404 resource not found, 422 validation error (check field formats), 429 rate limited (retry with exponential backoff).

Important Notes

Pagination: List methods return an auto-paginating iterator. Use for item in page_result: to iterate through all pages automatically.

Fetch multiple call resources

Returns multiple call resources for an account. This endpoint is eventually consistent.

GET /texml/Accounts/{account_sid}/Calls

response = client.texml.accounts.calls.retrieve_calls(
    account_sid="account_sid",
)
print(response.calls)

Returns: calls (array[object]), end (integer), first_page_uri (string), next_page_uri (string), page (integer), page_size (integer), start (integer), uri (string)

Initiate an outbound call

Initiate an outbound TeXML call. Telnyx will request TeXML from the XML Request URL configured for the connection in the Mission Control Portal.

POST /texml/Accounts/{account_sid}/Calls — Required: To, From, ApplicationSid

Optional: AsyncAmd (boolean), AsyncAmdStatusCallback (string), AsyncAmdStatusCallbackMethod (enum: GET, POST), CallerId (string), CancelPlaybackOnDetectMessageEnd (boolean), CancelPlaybackOnMachineDetection (boolean), CustomHeaders (array[object]), DetectionMode (enum: Premium, Regular), FallbackUrl (string), MachineDetection (enum: Enable, Disable, DetectMessageEnd), MachineDetectionSilenceTimeout (integer), MachineDetectionSpeechEndThreshold (integer), MachineDetectionSpeechThreshold (integer), MachineDetectionTimeout (integer), PreferredCodecs (string), Record (boolean), RecordingChannels (enum: mono, dual), RecordingStatusCallback (string), RecordingStatusCallbackEvent (string), RecordingStatusCallbackMethod (enum: GET, POST), RecordingTimeout (integer), RecordingTrack (enum: inbound, outbound, both), SendRecordingUrl (boolean), SipAuthPassword (string), SipAuthUsername (string), SipRegion (enum: US, Europe, Canada, Australia, Middle East), StatusCallback (string), StatusCallbackEvent (enum: initiated, ringing, answered, completed), StatusCallbackMethod (enum: GET, POST), SuperviseCallSid (string), SupervisingRole (enum: barge, whisper, monitor), Texml (string), TimeLimit (integer), Timeout (integer), Trim (enum: trim-silence, do-not-trim), Url (string), UrlMethod (enum: GET, POST)

response = client.texml.accounts.calls.calls(
    account_sid="account_sid",
    application_sid="example-app-sid",
    from_="+13120001234",
    to="+13121230000",
)
print(response.from_)

Returns: from (string), status (string), to (string)

Fetch a call

Returns an individual call identified by its CallSid. This endpoint is eventually consistent.

GET /texml/Accounts/{account_sid}/Calls/{call_sid}

call = client.texml.accounts.calls.retrieve(
    call_sid="call_sid",
    account_sid="account_sid",
)
print(call.account_sid)

Returns: account_sid (string), answered_by (enum: human, machine, not_sure), caller_name (string), date_created (string), date_updated (string), direction (enum: inbound, outbound), duration (string), end_time (string), from (string), from_formatted (string), price (string), price_unit (string), sid (string), start_time (string), status (enum: ringing, in-progress, canceled, completed, failed, busy, no-answer), to (string), to_formatted (string), uri (string)

Update call

Update TeXML call. Please note that the keys present in the payload MUST BE formatted in CamelCase as specified in the example.

POST /texml/Accounts/{account_sid}/Calls/{call_sid}

call = client.texml.accounts.calls.update(
    call_sid="call_sid",
    account_sid="account_sid",
)
print(call.account_sid)

Fetch recordings for a call

Returns recordings for a call identified by call_sid.

GET /texml/Accounts/{account_sid}/Calls/{call_sid}/Recordings.json

response = client.texml.accounts.calls.recordings_json.retrieve_recordings_json(
    call_sid="call_sid",
    account_sid="account_sid",
)
print(response.end)

Returns: end (integer), first_page_uri (uri), next_page_uri (string), page (integer), page_size (integer), previous_page_uri (uri), recordings (array[object]), start (integer), uri (string)

Request recording for a call

Starts recording with specified parameters for call identified by call_sid.

POST /texml/Accounts/{account_sid}/Calls/{call_sid}/Recordings.json

response = client.texml.accounts.calls.recordings_json.recordings_json(
    call_sid="call_sid",
    account_sid="account_sid",
)
print(response.account_sid)

Returns: account_sid (string), call_sid (string), channels (enum: 1, 2), conference_sid (uuid), date_created (date-time), date_updated (date-time), duration (string | null), error_code (string | null), price (string | null), price_unit (string | null), sid (string), source (enum: StartCallRecordingAPI, StartConferenceRecordingAPI, OutboundAPI, DialVerb, Conference, RecordVerb, Trunking), start_time (date-time), track (enum: inbound, outbound, both), uri (string)

Update recording on a call

Updates recording resource for particular call.

POST /texml/Accounts/{account_sid}/Calls/{call_sid}/Recordings/{recording_sid}.json

response = client.texml.accounts.calls.recordings.recording_sid_json(
    recording_sid="6a09cdc3-8948-47f0-aa62-74ac943d6c58",
    account_sid="account_sid",
    call_sid="call_sid",
)
print(response.account_sid)

Request siprec session for a call

Starts siprec session with specified parameters for call identified by call_sid.

POST /texml/Accounts/{account_sid}/Calls/{call_sid}/Siprec.json

response = client.texml.accounts.calls.siprec_json(
    call_sid="call_sid",
    account_sid="account_sid",
)
print(response.account_sid)

Returns: account_sid (string), call_sid (string), date_created (string), date_updated (string), error_code (string), sid (string), start_time (string), status (enum: in-progress, stopped), track (enum: both_tracks, inbound_track, outbound_track), uri (string)

Updates siprec session for a call

Updates siprec session identified by siprec_sid.

POST /texml/Accounts/{account_sid}/Calls/{call_sid}/Siprec/{siprec_sid}.json

response = client.texml.accounts.calls.siprec.siprec_sid_json(
    siprec_sid="siprec_sid",
    account_sid="account_sid",
    call_sid="call_sid",
)
print(response.account_sid)

Returns: account_sid (string), call_sid (string), date_updated (string), error_code (string), sid (string), status (enum: in-progress, stopped), uri (string)

Start streaming media from a call.

Starts streaming media from a call to a specific WebSocket address.

POST /texml/Accounts/{account_sid}/Calls/{call_sid}/Streams.json

response = client.texml.accounts.calls.streams_json(
    call_sid="call_sid",
    account_sid="account_sid",
)
print(response.account_sid)

Returns: account_sid (string), call_sid (string), date_updated (date-time), name (string), sid (string), status (enum: in-progress), uri (string)

Update streaming on a call

Updates streaming resource for particular call.

POST /texml/Accounts/{account_sid}/Calls/{call_sid}/Streams/{streaming_sid}.json

response = client.texml.accounts.calls.streams.streaming_sid_json(
    streaming_sid="6a09cdc3-8948-47f0-aa62-74ac943d6c58",
    account_sid="account_sid",
    call_sid="call_sid",
)
print(response.account_sid)

Returns: account_sid (string), call_sid (string), date_updated (date-time), sid (string), status (enum: stopped), uri (string)

List conference resources

Lists conference resources.

GET /texml/Accounts/{account_sid}/Conferences

response = client.texml.accounts.conferences.retrieve_conferences(
    account_sid="account_sid",
)
print(response.conferences)

Returns: conferences (array[object]), end (integer), first_page_uri (string), next_page_uri (string), page (integer), page_size (integer), start (integer), uri (string)

Fetch a conference resource

Returns a conference resource.

GET /texml/Accounts/{account_sid}/Conferences/{conference_sid}

conference = client.texml.accounts.conferences.retrieve(
    conference_sid="conference_sid",
    account_sid="account_sid",
)
print(conference.account_sid)

Returns: account_sid (string), api_version (string), call_sid_ending_conference (string), date_created (string), date_updated (string), friendly_name (string), reason_conference_ended (enum: participant-with-end-conference-on-exit-left, last-participant-left, conference-ended-via-api, time-exceeded), region (string), sid (string), status (enum: init, in-progress, completed), subresource_uris (object), uri (string)

Update a conference resource

Updates a conference resource.

POST /texml/Accounts/{account_sid}/Conferences/{conference_sid}

conference = client.texml.accounts.conferences.update(
    conference_sid="conference_sid",
    account_sid="account_sid",
)
print(conference.account_sid)

List conference participants

Lists conference participants

GET /texml/Accounts/{account_sid}/Conferences/{conference_sid}/Participants

response = client.texml.accounts.conferences.participants.retrieve_participants(
    conference_sid="conference_sid",
    account_sid="account_sid",
)
print(response.end)

Returns: end (integer), first_page_uri (string), next_page_uri (string), page (integer), page_size (integer), participants (array[object]), start (integer), uri (string)

Dial a new conference participant

Dials a new conference participant

POST /texml/Accounts/{account_sid}/Conferences/{conference_sid}/Participants

response = client.texml.accounts.conferences.participants.participants(
    conference_sid="conference_sid",
    account_sid="account_sid",
)
print(response.account_sid)

Returns: account_sid (string), call_sid (string), coaching (boolean), coaching_call_sid (string), conference_sid (uuid), end_conference_on_exit (boolean), hold (boolean), muted (boolean), status (enum: connecting, connected, completed), uri (string)

Get conference participant resource

Gets conference participant resource

GET /texml/Accounts/{account_sid}/Conferences/{conference_sid}/Participants/{call_sid_or_participant_label}

participant = client.texml.accounts.conferences.participants.retrieve(
    call_sid_or_participant_label="call_sid_or_participant_label",
    account_sid="account_sid",
    conference_sid="conference_sid",
)
print(participant.account_sid)

Returns: account_sid (string), api_version (string), call_sid (string), call_sid_legacy (string), coaching (boolean), coaching_call_sid (string), coaching_call_sid_legacy (string), conference_sid (uuid), date_created (string), date_updated (string), end_conference_on_exit (boolean), hold (boolean), muted (boolean), status (enum: connecting, connected, completed), uri (string)

Update a conference participant

Updates a conference participant

POST /texml/Accounts/{account_sid}/Conferences/{conference_sid}/Participants/{call_sid_or_participant_label}

participant = client.texml.accounts.conferences.participants.update(
    call_sid_or_participant_label="call_sid_or_participant_label",
    account_sid="account_sid",
    conference_sid="conference_sid",
)
print(participant.account_sid)

Delete a conference participant

Deletes a conference participant

DELETE /texml/Accounts/{account_sid}/Conferences/{conference_sid}/Participants/{call_sid_or_participant_label}

client.texml.accounts.conferences.participants.delete(
    call_sid_or_participant_label="call_sid_or_participant_label",
    account_sid="account_sid",
    conference_sid="conference_sid",
)

List conference recordings

Lists conference recordings

GET /texml/Accounts/{account_sid}/Conferences/{conference_sid}/Recordings

response = client.texml.accounts.conferences.retrieve_recordings(
    conference_sid="conference_sid",
    account_sid="account_sid",
)
print(response.end)

Returns: end (integer), first_page_uri (string), next_page_uri (string), page (integer), page_size (integer), participants (array[object]), recordings (array[object]), start (integer), uri (string)

Fetch recordings for a conference

Returns recordings for a conference identified by conference_sid.

GET /texml/Accounts/{account_sid}/Conferences/{conference_sid}/Recordings.json

response = client.texml.accounts.conferences.retrieve_recordings_json(
    conference_sid="conference_sid",
    account_sid="account_sid",
)
print(response.end)

List queue resources

Lists queue resources.

GET /texml/Accounts/{account_sid}/Queues

page = client.texml.accounts.queues.list(
    account_sid="account_sid",
)
page = page.queues[0]
print(page.account_sid)

Returns: end (integer), first_page_uri (string), next_page_uri (string), page (integer), page_size (integer), queues (array[object]), start (integer), uri (string)

Create a new queue

Creates a new queue resource.

POST /texml/Accounts/{account_sid}/Queues

queue = client.texml.accounts.queues.create(
    account_sid="account_sid",
)
print(queue.account_sid)

Returns: account_sid (string), average_wait_time (integer), current_size (integer), date_created (string), date_updated (string), max_size (integer), sid (string), subresource_uris (object), uri (string)

Fetch a queue resource

Returns a queue resource.

GET /texml/Accounts/{account_sid}/Queues/{queue_sid}

queue = client.texml.accounts.queues.retrieve(
    queue_sid="queue_sid",
    account_sid="account_sid",
)
print(queue.account_sid)

Update a queue resource

Updates a queue resource.

POST /texml/Accounts/{account_sid}/Queues/{queue_sid}

queue = client.texml.accounts.queues.update(
    queue_sid="queue_sid",
    account_sid="account_sid",
)
print(queue.account_sid)

Delete a queue resource

Delete a queue resource.

DELETE /texml/Accounts/{account_sid}/Queues/{queue_sid}

client.texml.accounts.queues.delete(
    queue_sid="queue_sid",
    account_sid="account_sid",
)

Fetch multiple recording resources

Returns multiple recording resources for an account.

GET /texml/Accounts/{account_sid}/Recordings.json

response = client.texml.accounts.retrieve_recordings_json(
    account_sid="account_sid",
)
print(response.end)

Fetch recording resource

Returns recording resource identified by recording id.

GET /texml/Accounts/{account_sid}/Recordings/{recording_sid}.json

texml_get_call_recording_response_body = client.texml.accounts.recordings.json.retrieve_recording_sid_json(
    recording_sid="6a09cdc3-8948-47f0-aa62-74ac943d6c58",
    account_sid="account_sid",
)
print(texml_get_call_recording_response_body.account_sid)

Returns: account_sid (string), call_sid (string), channels (enum: 1, 2), conference_sid (uuid), date_created (date-time), date_updated (date-time), duration (string | null), error_code (string | null), media_url (uri), sid (string), source (enum: StartCallRecordingAPI, StartConferenceRecordingAPI, OutboundAPI, DialVerb, Conference, RecordVerb, Trunking), start_time (date-time), status (enum: in-progress, completed, paused, stopped), subresources_uris (object), uri (string)

Delete recording resource

Deletes recording resource identified by recording id.

DELETE /texml/Accounts/{account_sid}/Recordings/{recording_sid}.json

client.texml.accounts.recordings.json.delete_recording_sid_json(
    recording_sid="6a09cdc3-8948-47f0-aa62-74ac943d6c58",
    account_sid="account_sid",
)

List recording transcriptions

Returns multiple recording transcription resources for an account.

GET /texml/Accounts/{account_sid}/Transcriptions.json

response = client.texml.accounts.retrieve_transcriptions_json(
    account_sid="account_sid",
)
print(response.end)

Returns: end (integer), first_page_uri (uri), next_page_uri (string), page (integer), page_size (integer), previous_page_uri (uri), start (integer), transcriptions (array[object]), uri (string)

Fetch a recording transcription resource

Returns the recording transcription resource identified by its ID.

GET /texml/Accounts/{account_sid}/Transcriptions/{recording_transcription_sid}.json

response = client.texml.accounts.transcriptions.json.retrieve_recording_transcription_sid_json(
    recording_transcription_sid="6a09cdc3-8948-47f0-aa62-74ac943d6c58",
    account_sid="account_sid",
)
print(response.account_sid)

Returns: account_sid (string), api_version (string), call_sid (string), date_created (date-time), date_updated (date-time), duration (string | null), recording_sid (string), sid (string), status (enum: in-progress, completed), transcription_text (string), uri (string)

Delete a recording transcription

Permanently deletes a recording transcription.

DELETE /texml/Accounts/{account_sid}/Transcriptions/{recording_transcription_sid}.json

client.texml.accounts.transcriptions.json.delete_recording_transcription_sid_json(
    recording_transcription_sid="6a09cdc3-8948-47f0-aa62-74ac943d6c58",
    account_sid="account_sid",
)

Create a TeXML secret

Create a TeXML secret which can be later used as a Dynamic Parameter for TeXML when using Mustache Templates in your TeXML. In your TeXML you will be able to use your secret name, and this name will be replaced by the actual secret value when processing the TeXML on Telnyx side. The secrets are not visible in any logs.

POST /texml/secrets — Required: name, value

response = client.texml.secrets(
    name="My Secret Name",
    value="My Secret Value",
)
print(response.data)

Returns: name (string), value (enum: REDACTED)

List all TeXML Applications

Returns a list of your TeXML Applications.

GET /texml_applications

page = client.texml_applications.list()
page = page.data[0]
print(page.id)

Returns: active (boolean), anchorsite_override (enum: Latency, Chicago, IL, Ashburn, VA, San Jose, CA, Sydney, Australia, Amsterdam, Netherlands, London, UK, Toronto, Canada, Vancouver, Canada, Frankfurt, Germany), call_cost_in_webhooks (boolean), created_at (string), dtmf_type (enum: RFC 2833, Inband, SIP INFO), first_command_timeout (boolean), first_command_timeout_secs (integer), friendly_name (string), id (string), inbound (object), outbound (object), record_type (string), status_callback (uri), status_callback_method (enum: get, post), tags (array[string]), updated_at (string), voice_fallback_url (uri), voice_method (enum: get, post), voice_url (uri)

Creates a TeXML Application

Creates a TeXML Application.

POST /texml_applications — Required: friendly_name, voice_url

Optional: active (boolean), anchorsite_override (enum: Latency, Chicago, IL, Ashburn, VA, San Jose, CA, Sydney, Australia, Amsterdam, Netherlands, London, UK, Toronto, Canada, Vancouver, Canada, Frankfurt, Germany), call_cost_in_webhooks (boolean), dtmf_type (enum: RFC 2833, Inband, SIP INFO), first_command_timeout (boolean), first_command_timeout_secs (integer), inbound (object), outbound (object), status_callback (uri), status_callback_method (enum: get, post), tags (array[string]), voice_fallback_url (uri), voice_method (enum: get, post)

texml_application = client.texml_applications.create(
    friendly_name="call-router",
    voice_url="https://example.com",
)
print(texml_application.data)

Retrieve a TeXML Application

Retrieves the details of an existing TeXML Application.

GET /texml_applications/{id}

texml_application = client.texml_applications.retrieve(
    "1293384261075731499",
)
print(texml_application.data)

Update a TeXML Application

Updates settings of an existing TeXML Application.

PATCH /texml_applications/{id} — Required: friendly_name, voice_url

texml_application = client.texml_applications.update(
    id="1293384261075731499",
    friendly_name="call-router",
    voice_url="https://example.com",
)
print(texml_application.data)

Deletes a TeXML Application

Deletes a TeXML Application.

DELETE /texml_applications/{id}

texml_application = client.texml_applications.delete(
    "1293384261075731499",
)
print(texml_application.data)

telnyx-texml-python