---
title: "Changes to GET /get-phone-number/{phone_number}"
method: GET
path: "/get-phone-number/{phone_number}"
---

# Changes to GET /get-phone-number/{phone_number}

`GET /get-phone-number/{phone_number}`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 8 of 28 revisions.

- **2026-05-28** `40402ca870b9` — 4 info
- **2026-05-08** `7dd16ddf69d8` — 4 info
- **2026-05-07** `f1a0d7c1e36c` — 4 breaking
- **2026-04-20** `8ee53928bf31` — 4 warning
- **2026-03-09** `8fbf8c54a142` — 1 breaking
- **2026-02-23** `bcff6899fa2a` — 4 info
- **2026-02-06** `dfad228ab4a4` — 6 info
- **2026-01-23** `427e77039f39` — 2 warning, 2 info

## Changes

- **2026-05-28** `40402ca870b9` — 4 info
  - the `inbound_agents/items/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `200`
  - the `inbound_sms_agents/items/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `200`
  - the `outbound_agents/items/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `200`
  - the `outbound_sms_agents/items/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` to `^(latest|latest_published|(?!(?:latest|latest_published|v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `200`
- **2026-05-08** `7dd16ddf69d8` — 4 info
  - the `inbound_agents/items/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `200`
  - the `inbound_sms_agents/items/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `200`
  - the `outbound_agents/items/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `200`
  - the `outbound_sms_agents/items/agent_version/oneOf[subschema #2]/` response's property pattern was changed from `^[a-z0-9_-]+$` to `^(latest|(?!(?:v\d+)$)[a-z][a-z0-9_-]{0,19})$` for the status `200`
- **2026-05-07** `f1a0d7c1e36c` — 4 breaking
  - response property `inbound_agents/items/agent_version` list-of-types was widened by adding types `string` to media type `application/json` of response `200`
  - response property `inbound_sms_agents/items/agent_version` list-of-types was widened by adding types `string` to media type `application/json` of response `200`
  - response property `outbound_agents/items/agent_version` list-of-types was widened by adding types `string` to media type `application/json` of response `200`
  - response property `outbound_sms_agents/items/agent_version` list-of-types was widened by adding types `string` to media type `application/json` of response `200`
- **2026-04-20** `8ee53928bf31` — 4 warning
  - removed the optional property `inbound_agent_id` from the response with the `200` status
  - removed the optional property `inbound_agent_version` from the response with the `200` status
  - removed the optional property `outbound_agent_id` from the response with the `200` status
  - removed the optional property `outbound_agent_version` from the response with the `200` status
- **2026-03-09** `8fbf8c54a142` — 1 breaking
  - for the `path` request parameter `phone_number`, the minLength was increased from `0` to `1`
- **2026-02-23** `bcff6899fa2a` — 4 info
  - response property `inbound_agent_id` deprecated
  - response property `inbound_agent_version` deprecated
  - response property `outbound_agent_id` deprecated
  - response property `outbound_agent_version` deprecated
- **2026-02-06** `dfad228ab4a4` — 6 info
  - added the optional property `fallback_number` to the response with the `200` status
  - added the optional property `inbound_agents` to the response with the `200` status
  - added the optional property `inbound_sms_agents` to the response with the `200` status
  - added the optional property `inbound_sms_webhook_url` to the response with the `200` status
  - added the optional property `outbound_agents` to the response with the `200` status
  - added the optional property `outbound_sms_agents` to the response with the `200` status
- **2026-01-23** `427e77039f39` — 2 warning, 2 info
  - removed the optional property `inbound_allowed_countries` from the response with the `200` status
  - removed the optional property `outbound_allowed_countries` from the response with the `200` status
  - added the optional property `allowed_inbound_country_list` to the response with the `200` status
  - added the optional property `allowed_outbound_country_list` to the response with the `200` status

---

[Operation](https://skmtc.dev/retellai/apis/retell-sdk/docs/get-phone-number/:phone_number/get.md) · [API](https://skmtc.dev/retellai/apis/retell-sdk.md) · [Page](https://skmtc.dev/retellai/apis/retell-sdk/changes/get-phone-number/:phone_number/get)