---
title: "List Phone Numbers"
method: GET
path: "/agents/phone-numbers"
tags: ["Phone Numbers"]
---

# List Phone Numbers

`GET /agents/phone-numbers`

## Query parameters

- `agent_id` string
- `provider_id` string
- `type` 'twilio' | 'cartesia'
- `q` string
- `starting_after` string, nullable
- `ending_before` string, nullable
- `limit` integer, nullable

## Headers

- `Cartesia-Version` '2026-03-01', date, required

## Response `200`

A paginated list of phone numbers.

- object
  - `data` PhoneNumberResponse[], required
    - `id` string, required — Unique identifier for the phone number.
    - `label` string, nullable — A human-readable name for the phone number.
    - `number` string, required — The phone number in E.164 format (e.g. +14155551234).
    - `agent` object, nullable, required — The agent that answers inbound calls to this number, or `null` if unassigned
      - `id` string, required
      - `name` string, required
    - `created_at` string, date-time, required — UTC timestamp when the phone number was created.
    - `updated_at` string, date-time, required — UTC timestamp when the phone number was last updated.
    - `provider` union, required — The telephony provider associated with a phone number. One of `Twilio` or `Cartesia`, determined by the `type` field.
      - TwilioProviderResponse — A linked Twilio account. The `api_key_sid` field is partially masked in responses.
        - `type` 'twilio', required — Always `"twilio"`.
        - `id` string, required — Unique identifier for the provider.
        - `account_sid` string, required — The Twilio account SID.
        - `api_key_sid` string, required — The Twilio API key SID (partially masked).
        - `region` 'us1' | 'ie1' | 'au1', required — The Twilio region the phone number and API key are configured for. `us1` (US), `ie1` (Ireland), `au1` (Australia). Default is `us1`.
      - CartesiaProviderResponse — A Cartesia-managed provider. US phone numbers only.
        - `type` 'cartesia', required — Always `"cartesia"`.
  - `has_more` boolean, required

---

[API](https://skmtc.net/cartesia/apis/cartesia-api.md) · [All operations](https://skmtc.net/cartesia/apis/cartesia-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/cartesia/cartesia-api/revisions/8910812440d3/schema)