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Talki DevelopersBeta

List contact changes

GET
/v1/contacts
curl --fail-with-body -X GET 'https://api.talki.it/v1/contacts?limit=10' \
  -H "Authorization: Bearer $TALKI_API_KEY"

Walk the curated-contact change feed in commit order. With phone or tag_id, find contacts instead: newest first, not resumable as a sync. Requires contacts:read. Limited to 600 requests per minute per account (API key) or per installation (OAuth).

Authorizations

Section titled “Authorizations”

Parameters

Section titled “ Parameters ”

Query Parameters

Section titled “Query Parameters”
limit
Limit

Maximum number of contacts to return.

integer
default: 50 >= 1 <= 100

Maximum number of contacts to return.

cursor
Any of:
string

Opaque position in the change feed, from a previous response’s next_cursor. Omit to start from the beginning. Store the last one you received: it is how you resume a sync without re-reading the whole address book. Not interchangeable with another endpoint’s cursor.

phone
Any of:
string

Only the contact with this number: E.164, or a national number read as Italian. Makes the list a search: see tag_id.

tag_id
Any of:
string

Only contacts with this tag (Tag.id). With it or phone the list is a search, not the change feed: newest contact first, next_cursor null on the last page, and a cursor works only in the mode that issued it. Resume a sync from the unfiltered feed.

Header Parameters

Section titled “Header Parameters”
Talki-Version
string
Example
2026-10-01

Serve this one request at the given dated contract version instead of the credential’s pin. An unsupported value is refused with 400 unsupported_version, never downgraded.

Responses

Section titled “ Responses ”

200

Section titled “200”

Successful Response

Media typeapplication/json
ContactList

A page of the contact change feed. next_cursor is your position, returned on the last page too; resume an incremental sync from it. With phone or tag_id, a page of a search instead, newest contact first, whose next_cursor is null on the last page.

object
data
required
Data
Array<object>
Contact

A person in the account’s address book. Only contacts the owner entered, imported or confirmed are published; names the assistant only heard are PendingContacts until the owner approves them. One contact per phone number; once stored, match on id.

object
id
required
Id

Opaque Talki contact identifier.

string
phone_number
required
Phone Number

The contact’s number in E.164.

string
first_name
required
Any of:
string
last_name
required
Any of:
string
display_name
required
Any of:
string
notes
required
Any of:
string
last_call_at
required
Any of:
string format: date-time
call_count
required
Any of:
integer
created_at
required
Created At

When the contact was added, RFC 3339 UTC.

string format: date-time
updated_at
required
Updated At

Last change to the contact, RFC 3339 UTC. Show it to a human as “last modified”; do not sync on it: as with Appointment.updated_at, a watermark on it can skip a contact permanently. Resume with the change feed’s next_cursor.

string format: date-time
next_cursor
required
Any of:
string
has_more
required
Has More

True when another page is available.

boolean
Example
{
  "data": [
    {
      "id": "8fbb25f2-4f3b-4496-8aea-f0fc66de512d",
      "phone_number": "+393331234567",
      "first_name": "Giulia",
      "last_name": "Bianchi",
      "display_name": "Giulia Bianchi",
      "notes": "Prefers morning appointments",
      "last_call_at": "2026-09-15T09:14:31Z",
      "call_count": 3,
      "created_at": "2026-08-20T12:00:00Z",
      "updated_at": "2026-09-15T09:18:03Z"
    }
  ],
  "next_cursor": "s1.sample",
  "has_more": false
}

Headers

Section titled “Headers”
X-Request-Id
string

Identifier to include when contacting Talki support.

Talki-Version
string
Example
2026-10-01

The dated contract version this response was served at.

400

Section titled “400”

phone is not a phone number, or another parameter is invalid (invalid_parameter). Or the cursor is not one this mode issued: altered, from another feed, or from the other mode, since a search answers with a list cursor and the feed with a change-feed cursor (invalid_cursor). Talki-Version may also name an unsupported version (unsupported_version).

Media typeapplication/json

Every error answer has this shape.

object
error
required

The error itself. Branch on code; message is for people.

object
type
required
string
Allowed values: authentication_error permission_error invalid_request conflict rate_limit_error api_error
code
required

Stable machine code; branch on this, not on message. Known codes: invalid_credentials, insufficient_scope, account_closed, subscription_inactive, plan_upgrade_required, plan_feature_unavailable, forbidden, livemode_required, sandbox_api_key_required, unsupported_version, invalid_parameter, invalid_cursor, method_not_allowed, resource_not_found, conflict, precondition_failed, payload_too_large, export_too_large, idempotency_key_required, idempotency_key_reuse, request_in_progress, request_conflict, rate_limit_exceeded, ip_rate_limited, internal_error, api_error, booking_refused, appointment_cancelled, appointment_not_cancelled, unresolved_request_not_resolved, faq_full, document_not_ready, unsupported_file_type, service_has_upcoming_bookings, resource_is_default, resource_required_by_service, capacity_below_committed, capacity_below_service_requirement, resource_too_small, tag_limit_reached, caller_rule_limit_reached, transcript_not_available, trial_suspended, account_suspended, phone_number_missing, forwarding_number_missing, forwarding_number_invalid, check_in_progress, check_quota_exceeded, checks_busy, check_call_failed, agent_test_session_full, agent_test_unavailable, unknown_scenario, sandbox_not_ready, too_many_keys, key_not_active, key_already_rolled, invalid_registration, client_disabled, client_changed, delivery_in_progress, events_url_unset, events_paused, event_unsubscribed, account_refused, installation_inactive, invalid_client, invalid_request, unauthorized_client, access_denied, invalid_scope, slot_unavailable, capacity_exhausted, service_exclusion, closed_day, in_the_past, outside_hours, service_inactive, location_inactive, service_deleted, no_services_requested, party_too_large, stay_too_short, stay_too_long, stay_dates_invalid. New codes may be added; treat an unknown one by its HTTP status.

string
message
required
string
request_id
required
string
Example
{
  "error": {
    "type": "invalid_request",
    "code": "invalid_parameter",
    "message": "`phone` must be a phone number, E.164 or national.",
    "request_id": "req_7f24a2f8c6b64e699901563a458b5031"
  }
}

Headers

Section titled “Headers”
X-Request-Id
string
Example
req_7f24a2f8c6b64e699901563a458b5031

Identifier to include when contacting Talki support.

401

Section titled “401”

The credential is missing, malformed, expired, revoked, or unknown.

Media typeapplication/json

Every error answer has this shape.

object
error
required

The error itself. Branch on code; message is for people.

object
type
required
string
Allowed values: authentication_error permission_error invalid_request conflict rate_limit_error api_error
code
required

Stable machine code; branch on this, not on message. Known codes: invalid_credentials, insufficient_scope, account_closed, subscription_inactive, plan_upgrade_required, plan_feature_unavailable, forbidden, livemode_required, sandbox_api_key_required, unsupported_version, invalid_parameter, invalid_cursor, method_not_allowed, resource_not_found, conflict, precondition_failed, payload_too_large, export_too_large, idempotency_key_required, idempotency_key_reuse, request_in_progress, request_conflict, rate_limit_exceeded, ip_rate_limited, internal_error, api_error, booking_refused, appointment_cancelled, appointment_not_cancelled, unresolved_request_not_resolved, faq_full, document_not_ready, unsupported_file_type, service_has_upcoming_bookings, resource_is_default, resource_required_by_service, capacity_below_committed, capacity_below_service_requirement, resource_too_small, tag_limit_reached, caller_rule_limit_reached, transcript_not_available, trial_suspended, account_suspended, phone_number_missing, forwarding_number_missing, forwarding_number_invalid, check_in_progress, check_quota_exceeded, checks_busy, check_call_failed, agent_test_session_full, agent_test_unavailable, unknown_scenario, sandbox_not_ready, too_many_keys, key_not_active, key_already_rolled, invalid_registration, client_disabled, client_changed, delivery_in_progress, events_url_unset, events_paused, event_unsubscribed, account_refused, installation_inactive, invalid_client, invalid_request, unauthorized_client, access_denied, invalid_scope, slot_unavailable, capacity_exhausted, service_exclusion, closed_day, in_the_past, outside_hours, service_inactive, location_inactive, service_deleted, no_services_requested, party_too_large, stay_too_short, stay_too_long, stay_dates_invalid. New codes may be added; treat an unknown one by its HTTP status.

string
message
required
string
request_id
required
string
Example
{
  "error": {
    "type": "authentication_error",
    "code": "invalid_credentials",
    "message": "The supplied API credential is invalid.",
    "request_id": "req_7f24a2f8c6b64e699901563a458b5031"
  }
}

Headers

Section titled “Headers”
X-Request-Id
string
Example
req_7f24a2f8c6b64e699901563a458b5031

Identifier to include when contacting Talki support.

402

Section titled “402”

The account does not have an active subscription.

Media typeapplication/json

Every error answer has this shape.

object
error
required

The error itself. Branch on code; message is for people.

object
type
required
string
Allowed values: authentication_error permission_error invalid_request conflict rate_limit_error api_error
code
required

Stable machine code; branch on this, not on message. Known codes: invalid_credentials, insufficient_scope, account_closed, subscription_inactive, plan_upgrade_required, plan_feature_unavailable, forbidden, livemode_required, sandbox_api_key_required, unsupported_version, invalid_parameter, invalid_cursor, method_not_allowed, resource_not_found, conflict, precondition_failed, payload_too_large, export_too_large, idempotency_key_required, idempotency_key_reuse, request_in_progress, request_conflict, rate_limit_exceeded, ip_rate_limited, internal_error, api_error, booking_refused, appointment_cancelled, appointment_not_cancelled, unresolved_request_not_resolved, faq_full, document_not_ready, unsupported_file_type, service_has_upcoming_bookings, resource_is_default, resource_required_by_service, capacity_below_committed, capacity_below_service_requirement, resource_too_small, tag_limit_reached, caller_rule_limit_reached, transcript_not_available, trial_suspended, account_suspended, phone_number_missing, forwarding_number_missing, forwarding_number_invalid, check_in_progress, check_quota_exceeded, checks_busy, check_call_failed, agent_test_session_full, agent_test_unavailable, unknown_scenario, sandbox_not_ready, too_many_keys, key_not_active, key_already_rolled, invalid_registration, client_disabled, client_changed, delivery_in_progress, events_url_unset, events_paused, event_unsubscribed, account_refused, installation_inactive, invalid_client, invalid_request, unauthorized_client, access_denied, invalid_scope, slot_unavailable, capacity_exhausted, service_exclusion, closed_day, in_the_past, outside_hours, service_inactive, location_inactive, service_deleted, no_services_requested, party_too_large, stay_too_short, stay_too_long, stay_dates_invalid. New codes may be added; treat an unknown one by its HTTP status.

string
message
required
string
request_id
required
string
Example
{
  "error": {
    "type": "permission_error",
    "code": "subscription_inactive",
    "message": "This account does not have an active subscription.",
    "request_id": "req_7f24a2f8c6b64e699901563a458b5031"
  }
}

Headers

Section titled “Headers”
X-Request-Id
string
Example
req_7f24a2f8c6b64e699901563a458b5031

Identifier to include when contacting Talki support.

403

Section titled “403”

The account or credential may not perform this request.

Media typeapplication/json

Every error answer has this shape.

object
error
required

The error itself. Branch on code; message is for people.

object
type
required
string
Allowed values: authentication_error permission_error invalid_request conflict rate_limit_error api_error
code
required

Stable machine code; branch on this, not on message. Known codes: invalid_credentials, insufficient_scope, account_closed, subscription_inactive, plan_upgrade_required, plan_feature_unavailable, forbidden, livemode_required, sandbox_api_key_required, unsupported_version, invalid_parameter, invalid_cursor, method_not_allowed, resource_not_found, conflict, precondition_failed, payload_too_large, export_too_large, idempotency_key_required, idempotency_key_reuse, request_in_progress, request_conflict, rate_limit_exceeded, ip_rate_limited, internal_error, api_error, booking_refused, appointment_cancelled, appointment_not_cancelled, unresolved_request_not_resolved, faq_full, document_not_ready, unsupported_file_type, service_has_upcoming_bookings, resource_is_default, resource_required_by_service, capacity_below_committed, capacity_below_service_requirement, resource_too_small, tag_limit_reached, caller_rule_limit_reached, transcript_not_available, trial_suspended, account_suspended, phone_number_missing, forwarding_number_missing, forwarding_number_invalid, check_in_progress, check_quota_exceeded, checks_busy, check_call_failed, agent_test_session_full, agent_test_unavailable, unknown_scenario, sandbox_not_ready, too_many_keys, key_not_active, key_already_rolled, invalid_registration, client_disabled, client_changed, delivery_in_progress, events_url_unset, events_paused, event_unsubscribed, account_refused, installation_inactive, invalid_client, invalid_request, unauthorized_client, access_denied, invalid_scope, slot_unavailable, capacity_exhausted, service_exclusion, closed_day, in_the_past, outside_hours, service_inactive, location_inactive, service_deleted, no_services_requested, party_too_large, stay_too_short, stay_too_long, stay_dates_invalid. New codes may be added; treat an unknown one by its HTTP status.

string
message
required
string
request_id
required
string
Example
{
  "error": {
    "type": "permission_error",
    "code": "insufficient_scope",
    "message": "This credential does not have the required scope.",
    "request_id": "req_7f24a2f8c6b64e699901563a458b5031"
  }
}

Headers

Section titled “Headers”
X-Request-Id
string
Example
req_7f24a2f8c6b64e699901563a458b5031

Identifier to include when contacting Talki support.

429

Section titled “429”

The account or installation exceeded its request rate (rate_limit_exceeded), or the calling address did (ip_rate_limited).

Media typeapplication/json

Every error answer has this shape.

object
error
required

The error itself. Branch on code; message is for people.

object
type
required
string
Allowed values: authentication_error permission_error invalid_request conflict rate_limit_error api_error
code
required

Stable machine code; branch on this, not on message. Known codes: invalid_credentials, insufficient_scope, account_closed, subscription_inactive, plan_upgrade_required, plan_feature_unavailable, forbidden, livemode_required, sandbox_api_key_required, unsupported_version, invalid_parameter, invalid_cursor, method_not_allowed, resource_not_found, conflict, precondition_failed, payload_too_large, export_too_large, idempotency_key_required, idempotency_key_reuse, request_in_progress, request_conflict, rate_limit_exceeded, ip_rate_limited, internal_error, api_error, booking_refused, appointment_cancelled, appointment_not_cancelled, unresolved_request_not_resolved, faq_full, document_not_ready, unsupported_file_type, service_has_upcoming_bookings, resource_is_default, resource_required_by_service, capacity_below_committed, capacity_below_service_requirement, resource_too_small, tag_limit_reached, caller_rule_limit_reached, transcript_not_available, trial_suspended, account_suspended, phone_number_missing, forwarding_number_missing, forwarding_number_invalid, check_in_progress, check_quota_exceeded, checks_busy, check_call_failed, agent_test_session_full, agent_test_unavailable, unknown_scenario, sandbox_not_ready, too_many_keys, key_not_active, key_already_rolled, invalid_registration, client_disabled, client_changed, delivery_in_progress, events_url_unset, events_paused, event_unsubscribed, account_refused, installation_inactive, invalid_client, invalid_request, unauthorized_client, access_denied, invalid_scope, slot_unavailable, capacity_exhausted, service_exclusion, closed_day, in_the_past, outside_hours, service_inactive, location_inactive, service_deleted, no_services_requested, party_too_large, stay_too_short, stay_too_long, stay_dates_invalid. New codes may be added; treat an unknown one by its HTTP status.

string
message
required
string
request_id
required
string
Example
{
  "error": {
    "type": "rate_limit_error",
    "code": "rate_limit_exceeded",
    "message": "Too many requests. Retry after the interval in Retry-After.",
    "request_id": "req_7f24a2f8c6b64e699901563a458b5031"
  }
}

Headers

Section titled “Headers”
X-Request-Id
string
Example
req_7f24a2f8c6b64e699901563a458b5031

Identifier to include when contacting Talki support.

Retry-After
integer

Seconds to wait before retrying.

X-RateLimit-Limit
string

The budget of the window that was exceeded. Absent on ip_rate_limited.

X-RateLimit-Remaining
integer

Requests left in the window. Absent on ip_rate_limited.

X-RateLimit-Reset
integer

When the window resets, in Unix seconds. Absent on ip_rate_limited.

500

Section titled “500”

An unexpected error occurred.

Media typeapplication/json

Every error answer has this shape.

object
error
required

The error itself. Branch on code; message is for people.

object
type
required
string
Allowed values: authentication_error permission_error invalid_request conflict rate_limit_error api_error
code
required

Stable machine code; branch on this, not on message. Known codes: invalid_credentials, insufficient_scope, account_closed, subscription_inactive, plan_upgrade_required, plan_feature_unavailable, forbidden, livemode_required, sandbox_api_key_required, unsupported_version, invalid_parameter, invalid_cursor, method_not_allowed, resource_not_found, conflict, precondition_failed, payload_too_large, export_too_large, idempotency_key_required, idempotency_key_reuse, request_in_progress, request_conflict, rate_limit_exceeded, ip_rate_limited, internal_error, api_error, booking_refused, appointment_cancelled, appointment_not_cancelled, unresolved_request_not_resolved, faq_full, document_not_ready, unsupported_file_type, service_has_upcoming_bookings, resource_is_default, resource_required_by_service, capacity_below_committed, capacity_below_service_requirement, resource_too_small, tag_limit_reached, caller_rule_limit_reached, transcript_not_available, trial_suspended, account_suspended, phone_number_missing, forwarding_number_missing, forwarding_number_invalid, check_in_progress, check_quota_exceeded, checks_busy, check_call_failed, agent_test_session_full, agent_test_unavailable, unknown_scenario, sandbox_not_ready, too_many_keys, key_not_active, key_already_rolled, invalid_registration, client_disabled, client_changed, delivery_in_progress, events_url_unset, events_paused, event_unsubscribed, account_refused, installation_inactive, invalid_client, invalid_request, unauthorized_client, access_denied, invalid_scope, slot_unavailable, capacity_exhausted, service_exclusion, closed_day, in_the_past, outside_hours, service_inactive, location_inactive, service_deleted, no_services_requested, party_too_large, stay_too_short, stay_too_long, stay_dates_invalid. New codes may be added; treat an unknown one by its HTTP status.

string
message
required
string
request_id
required
string
Example
{
  "error": {
    "type": "api_error",
    "code": "internal_error",
    "message": "An unexpected error occurred. Quote the request_id when reporting it.",
    "request_id": "req_7f24a2f8c6b64e699901563a458b5031"
  }
}

Headers

Section titled “Headers”
X-Request-Id
string
Example
req_7f24a2f8c6b64e699901563a458b5031

Identifier to include when contacting Talki support.