"github.com/team-telnyx/telnyx-go/option" )

client := telnyx.NewClient( option.WithAPIKey(os.Getenv("TELNYX_API_KEY")), )


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:

```go
import "errors"

result, err := client.Messages.Send(ctx, params)
if err != nil {
  var apiErr *telnyx.Error
  if errors.As(err, &apiErr) {
    switch apiErr.StatusCode {
    case 422:
      fmt.Println("Validation error — check required fields and formats")
    case 429:
      // Rate limited — wait and retry with exponential backoff
      fmt.Println("Rate limited, retrying...")
    default:
      fmt.Printf("API error %d: %s\n", apiErr.StatusCode, apiErr.Error())
    }
  } else {
    fmt.Println("Network error — check connectivity and retry")
  }
}

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

Phone numbers must be in E.164 format (e.g., +13125550001). Include the + prefix and country code. No spaces, dashes, or parentheses.
Pagination: Use ListAutoPaging() for automatic iteration: iter := client.Resource.ListAutoPaging(ctx, params); for iter.Next() { item := iter.Current() }.

Bulk update phone number profiles

POST /messaging_numbers_bulk_updates — Required: messaging_profile_id, numbers

Optional: assign_only (boolean)

	messagingNumbersBulkUpdate, err := client.MessagingNumbersBulkUpdates.New(context.Background(), telnyx.MessagingNumbersBulkUpdateNewParams{
		MessagingProfileID: "00000000-0000-0000-0000-000000000000",
		Numbers:            []string{"+18880000000", "+18880000001", "+18880000002"},
	})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", messagingNumbersBulkUpdate.Data)

Returns: failed (array[string]), order_id (uuid), pending (array[string]), record_type (enum: messaging_numbers_bulk_update), success (array[string])

Retrieve bulk update status

GET /messaging_numbers_bulk_updates/{order_id}

	messagingNumbersBulkUpdate, err := client.MessagingNumbersBulkUpdates.Get(context.Background(), "order_id")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", messagingNumbersBulkUpdate.Data)

Returns: failed (array[string]), order_id (uuid), pending (array[string]), record_type (enum: messaging_numbers_bulk_update), success (array[string])

List mobile phone numbers with messaging settings

GET /mobile_phone_numbers/messaging

	page, err := client.MobilePhoneNumbers.Messaging.List(context.Background(), telnyx.MobilePhoneNumberMessagingListParams{})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", page)

Returns: country_code (string), created_at (date-time), features (object), id (string), messaging_product (string), messaging_profile_id (string | null), organization_id (string), phone_number (string), record_type (enum: messaging_phone_number, messaging_settings), tags (array[string]), traffic_type (string), type (enum: longcode), updated_at (date-time)

Retrieve a mobile phone number with messaging settings

GET /mobile_phone_numbers/{id}/messaging

	messaging, err := client.MobilePhoneNumbers.Messaging.Get(context.Background(), "id")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", messaging.Data)

List phone numbers

GET /phone_numbers

	page, err := client.PhoneNumbers.List(context.Background(), telnyx.PhoneNumberListParams{})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", page)

Returns: billing_group_id (string | null), call_forwarding_enabled (boolean), call_recording_enabled (boolean), caller_id_name_enabled (boolean), cnam_listing_enabled (boolean), connection_id (string | null), connection_name (string | null), country_iso_alpha2 (string), created_at (date-time), customer_reference (string | null), deletion_lock_enabled (boolean), emergency_address_id (string | null), emergency_enabled (boolean), emergency_status (enum: active, deprovisioning, disabled, provisioning, provisioning-failed), external_pin (string | null), hd_voice_enabled (boolean), id (string), inbound_call_screening (enum: disabled, reject_calls, flag_calls), messaging_profile_id (string | null), messaging_profile_name (string | null), phone_number (string), phone_number_type (enum: local, toll_free, mobile, national, shared_cost, landline, tollfree, shortcode, longcode), purchased_at (string), record_type (string), source_type (object), status (enum: purchase-pending, purchase-failed, port-pending, port-failed, active, deleted, emergency-only, ported-out, port-out-pending, requirement-info-pending, requirement-info-under-review, requirement-info-exception, provision-pending), t38_fax_gateway_enabled (boolean), tags (array[string]), updated_at (string)

Verify ownership of phone numbers

Verifies ownership of the provided phone numbers and returns a mapping of numbers to their IDs, plus a list of numbers not found in the account.

POST /phone_numbers/actions/verify_ownership — Required: phone_numbers

	response, err := client.PhoneNumbers.Actions.VerifyOwnership(context.Background(), telnyx.PhoneNumberActionVerifyOwnershipParams{
		PhoneNumbers: []string{"+15551234567"},
	})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", response.Data)

Returns: found (array[object]), not_found (array[string]), record_type (string)

Lists the phone numbers jobs

GET /phone_numbers/jobs

	page, err := client.PhoneNumbers.Jobs.List(context.Background(), telnyx.PhoneNumberJobListParams{})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", page)

Returns: created_at (string), etc (date-time), failed_operations (array[object]), id (uuid), pending_operations (array[object]), phone_numbers (array[object]), record_type (string), status (enum: pending, in_progress, completed, failed, expired), successful_operations (array[object]), type (enum: update_emergency_settings, delete_phone_numbers, update_phone_numbers), updated_at (string)

Delete a batch of numbers

Creates a new background job to delete a batch of numbers. At most one thousand numbers can be updated per API call.

POST /phone_numbers/jobs/delete_phone_numbers — Required: phone_numbers

	response, err := client.PhoneNumbers.Jobs.DeleteBatch(context.Background(), telnyx.PhoneNumberJobDeleteBatchParams{
		PhoneNumbers: []string{"+19705555098", "+19715555098", "32873127836"},
	})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", response.Data)

Update the emergency settings from a batch of numbers

Creates a background job to update the emergency settings of a collection of phone numbers. At most one thousand numbers can be updated per API call.

POST /phone_numbers/jobs/update_emergency_settings — Required: emergency_enabled, phone_numbers

Optional: emergency_address_id (string | null)

	response, err := client.PhoneNumbers.Jobs.UpdateEmergencySettingsBatch(context.Background(), telnyx.PhoneNumberJobUpdateEmergencySettingsBatchParams{
		EmergencyEnabled: true,
		PhoneNumbers:     []string{"+19705555098", "+19715555098", "32873127836"},
	})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", response.Data)

Update a batch of numbers

Creates a new background job to update a batch of numbers. At most one thousand numbers can be updated per API call. At least one of the updateable fields must be submitted.

POST /phone_numbers/jobs/update_phone_numbers — Required: phone_numbers

Optional: billing_group_id (string), connection_id (string), customer_reference (string), deletion_lock_enabled (boolean), external_pin (string), hd_voice_enabled (boolean), tags (array[string]), voice (object)

	response, err := client.PhoneNumbers.Jobs.UpdateBatch(context.Background(), telnyx.PhoneNumberJobUpdateBatchParams{
		PhoneNumbers: []string{"1583466971586889004", "+13127367254"},
	})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", response.Data)

Retrieve a phone numbers job

GET /phone_numbers/jobs/{id}

	job, err := client.PhoneNumbers.Jobs.Get(context.Background(), "id")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", job.Data)

List phone numbers with messaging settings

GET /phone_numbers/messaging

	page, err := client.PhoneNumbers.Messaging.List(context.Background(), telnyx.PhoneNumberMessagingListParams{})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", page)

Returns: country_code (string), created_at (date-time), eligible_messaging_products (array[string]), features (object), health (object), id (string), messaging_product (string), messaging_profile_id (string | null), organization_id (string), phone_number (string), record_type (enum: messaging_phone_number, messaging_settings), tags (array[string]), traffic_type (string), type (enum: long-code, toll-free, short-code, longcode, tollfree, shortcode), updated_at (date-time)

Slim List phone numbers

List phone numbers, This endpoint is a lighter version of the /phone_numbers endpoint having higher performance and rate limit.

GET /phone_numbers/slim

	page, err := client.PhoneNumbers.SlimList(context.Background(), telnyx.PhoneNumberSlimListParams{})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", page)

Returns: billing_group_id (string), call_forwarding_enabled (boolean), call_recording_enabled (boolean), caller_id_name_enabled (boolean), cnam_listing_enabled (boolean), connection_id (string), country_iso_alpha2 (string), created_at (string), customer_reference (string), emergency_address_id (string), emergency_enabled (boolean), emergency_status (enum: active, deprovisioning, disabled, provisioning, provisioning-failed), external_pin (string), hd_voice_enabled (boolean), id (string), inbound_call_screening (enum: disabled, reject_calls, flag_calls), phone_number (string), phone_number_type (enum: local, toll_free, mobile, national, shared_cost, landline, tollfree, shortcode, longcode), purchased_at (string), record_type (string), status (enum: purchase-pending, purchase-failed, port-pending, port-failed, active, deleted, emergency-only, ported-out, port-out-pending, requirement-info-pending, requirement-info-under-review, requirement-info-exception, provision-pending), t38_fax_gateway_enabled (boolean), updated_at (string)

List phone numbers with voice settings

GET /phone_numbers/voice

	page, err := client.PhoneNumbers.Voice.List(context.Background(), telnyx.PhoneNumberVoiceListParams{})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", page)

Returns: call_forwarding (object), call_recording (object), cnam_listing (object), connection_id (string), customer_reference (string), emergency (object), id (string), inbound_call_screening (enum: disabled, reject_calls, flag_calls), media_features (object), phone_number (string), record_type (string), tech_prefix_enabled (boolean), translated_number (string), usage_payment_method (enum: pay-per-minute, channel)

Retrieve a phone number

GET /phone_numbers/{id}

	phoneNumber, err := client.PhoneNumbers.Get(context.Background(), "1293384261075731499")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", phoneNumber.Data)

Update a phone number

PATCH /phone_numbers/{id}

Optional: address_id (string), billing_group_id (string), connection_id (string), customer_reference (string), external_pin (string), hd_voice_enabled (boolean), id (string), tags (array[string])

	phoneNumber, err := client.PhoneNumbers.Update(
		context.Background(),
		"1293384261075731499",
		telnyx.PhoneNumberUpdateParams{},
	)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", phoneNumber.Data)

Delete a phone number

DELETE /phone_numbers/{id}

	phoneNumber, err := client.PhoneNumbers.Delete(context.Background(), "1293384261075731499")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", phoneNumber.Data)

Returns: billing_group_id (string), call_forwarding_enabled (boolean), call_recording_enabled (boolean), caller_id_name_enabled (boolean), cnam_listing_enabled (boolean), connection_id (string), connection_name (string), created_at (string), customer_reference (string), deletion_lock_enabled (boolean), emergency_address_id (string), emergency_enabled (boolean), external_pin (string), hd_voice_enabled (boolean), id (string), messaging_profile_id (string), messaging_profile_name (string), phone_number (string), phone_number_type (enum: local, toll_free, mobile, national, shared_cost, landline), purchased_at (string), record_type (string), status (enum: purchase-pending, purchase-failed, port-pending, port-failed, active, deleted, emergency-only, ported-out, port-out-pending), t38_fax_gateway_enabled (boolean), tags (array[string]), updated_at (string)

Change the bundle status for a phone number (set to being in a bundle or remove from a bundle)

PATCH /phone_numbers/{id}/actions/bundle_status_change — Required: bundle_id

	response, err := client.PhoneNumbers.Actions.ChangeBundleStatus(
		context.Background(),
		"1293384261075731499",
		telnyx.PhoneNumberActionChangeBundleStatusParams{
			BundleID: "5194d8fc-87e6-4188-baa9-1c434bbe861b",
		},
	)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", response.Data)

Enable emergency for a phone number

POST /phone_numbers/{id}/actions/enable_emergency — Required: emergency_enabled, emergency_address_id

	response, err := client.PhoneNumbers.Actions.EnableEmergency(
		context.Background(),
		"1293384261075731499",
		telnyx.PhoneNumberActionEnableEmergencyParams{
			EmergencyAddressID: "53829456729313",
			EmergencyEnabled:   true,
		},
	)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", response.Data)

Retrieve a phone number with messaging settings

GET /phone_numbers/{id}/messaging

	messaging, err := client.PhoneNumbers.Messaging.Get(context.Background(), "id")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", messaging.Data)

Update the messaging profile and/or messaging product of a phone number

PATCH /phone_numbers/{id}/messaging

Optional: messaging_product (string), messaging_profile_id (string), tags (array[string])

	messaging, err := client.PhoneNumbers.Messaging.Update(
		context.Background(),
		"id",
		telnyx.PhoneNumberMessagingUpdateParams{},
	)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", messaging.Data)

Retrieve a phone number with voice settings

GET /phone_numbers/{id}/voice

	voice, err := client.PhoneNumbers.Voice.Get(context.Background(), "1293384261075731499")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", voice.Data)

Update a phone number with voice settings

PATCH /phone_numbers/{id}/voice

Optional: call_forwarding (object), call_recording (object), caller_id_name_enabled (boolean), cnam_listing (object), inbound_call_screening (enum: disabled, reject_calls, flag_calls), media_features (object), tech_prefix_enabled (boolean), translated_number (string), usage_payment_method (enum: pay-per-minute, channel)

	voice, err := client.PhoneNumbers.Voice.Update(
		context.Background(),
		"1293384261075731499",
		telnyx.PhoneNumberVoiceUpdateParams{
			UpdateVoiceSettings: telnyx.UpdateVoiceSettingsParam{},
		},
	)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", voice.Data)

List Mobile Phone Numbers

GET /v2/mobile_phone_numbers

	page, err := client.MobilePhoneNumbers.List(context.Background(), telnyx.MobilePhoneNumberListParams{})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", page)

Returns: call_forwarding (object), call_recording (object), caller_id_name_enabled (boolean), cnam_listing (object), connection_id (string | null), connection_name (string | null), connection_type (string | null), country_iso_alpha2 (string), created_at (date-time), customer_reference (string | null), id (string), inbound (object), inbound_call_screening (enum: disabled, reject_calls, flag_calls), mobile_voice_enabled (boolean), noise_suppression (enum: inbound, outbound, both, disabled), outbound (object), phone_number (string), record_type (string), sim_card_id (uuid), status (string), tags (array[string]), updated_at (date-time)

Retrieve a Mobile Phone Number

GET /v2/mobile_phone_numbers/{id}

	mobilePhoneNumber, err := client.MobilePhoneNumbers.Get(context.Background(), "id")
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", mobilePhoneNumber.Data)

Update a Mobile Phone Number

PATCH /v2/mobile_phone_numbers/{id}

Optional: call_forwarding (object), call_recording (object), caller_id_name_enabled (boolean), cnam_listing (object), connection_id (string | null), customer_reference (string | null), inbound (object), inbound_call_screening (enum: disabled, reject_calls, flag_calls), noise_suppression (boolean), outbound (object), tags (array[string])

	mobilePhoneNumber, err := client.MobilePhoneNumbers.Update(
		context.Background(),
		"id",
		telnyx.MobilePhoneNumberUpdateParams{},
	)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%+v\n", mobilePhoneNumber.Data)

telnyx-numbers-config-go

Telnyx Numbers Config - Go

Installation

Setup

More from team-telnyx/skills

telnyx-voice-javascript

telnyx-messaging-javascript

telnyx-numbers-javascript

telnyx-ai-assistants-javascript

telnyx-voice-media-javascript

telnyx-voice-python