--- title: "Changes to GET /get-agent-versions/{agent_id}" method: GET path: "/get-agent-versions/{agent_id}" --- # Changes to GET /get-agent-versions/{agent_id} `GET /get-agent-versions/{agent_id}` > Every recorded change to this endpoint, newest first. ## Timeline Changed in 18 of 28 revisions. - **2026-05-18** `6342a9990108` — 1 warning - **2026-05-11** `7c30e3ea2536` — 2 warning - **2026-05-08** `a109c375a367` — 2 warning - **2026-05-07** `f1a0d7c1e36c` — 8 info - **2026-04-28** `1b4a9d84942a` — 1 breaking, 1 warning, 4 info - **2026-04-27** `a44406f743c2` — 2 breaking, 64 info - **2026-04-20** `8ee53928bf31` — 4 warning - **2026-04-01** `56de19127afb` — 1 breaking, 3 info - **2026-03-19** `3aa6f6e028ef` — 2 warning, 2 info - **2026-03-17** `424df3aa7900` — 2 warning - **2026-03-09** `8fbf8c54a142` — 2 breaking, 2 warning, 4 info - **2026-02-26** `e89903d2c910` — 1 info - **2026-02-23** `bcff6899fa2a` — 1 warning, 2 info - **2026-02-11** `076d0088c7ed` — 2 warning - **2026-02-10** `0bf5cea5dfcc` — 1 info - **2026-02-06** `dfad228ab4a4` — 1 warning, 3 info - **2026-01-23** `427e77039f39` — 9 warning - **2026-01-19** `9dbbdaf34f4b` — 1 info ## Changes - **2026-05-18** `6342a9990108` — 1 warning - removed the optional property `items/allOf[#/components/schemas/AgentRequest]/is_public` from the response with the `200` status - **2026-05-11** `7c30e3ea2536` — 2 warning - added the new `s2.1-pro` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_model` response property for the response status `200` - added the new `sonic-3.5` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_model` response property for the response status `200` - **2026-05-08** `a109c375a367` — 2 warning - deleted the `query` request parameter `include_response_engine` - removed the optional property `items/allOf[subschema #3]/response_engine_data` from the response with the `200` status - **2026-05-07** `f1a0d7c1e36c` — 8 info - added the new optional `query` request parameter `include_response_engine` - added the optional property `items/allOf[#/components/schemas/AgentRequest]/allow_dtmf_interruption` to the response with the `200` status - added the optional property `items/allOf[#/components/schemas/AgentRequest]/call_screening_option` to the response with the `200` status - added the optional property `items/allOf[#/components/schemas/AgentRequest]/ivr_option/detection_prompt` to the response with the `200` status - added the optional property `items/allOf[#/components/schemas/AgentRequest]/voicemail_option/detection_prompt` to the response with the `200` status - added `subschema #1, subschema #3` to the `items/` response property `allOf` list for the response status `200` - removed `subschema #1, subschema #3` from the `items/` response property `allOf` list for the response status `200` - removed the `gemini-2.5-flash` enum value from the `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_model` response property for the response status `200` - **2026-04-28** `1b4a9d84942a` — 1 breaking, 1 warning, 4 info - the `items/allOf[#/components/schemas/AgentRequest]/custom_stt_config/provider` response's property type/format changed from `string`/`` to ``/`` for status `200` - added the new `gpt-5.5` enum value to the `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_model` response property for the response status `200` - added `#/components/schemas/AsrProvider` to the `items/allOf[#/components/schemas/AgentRequest]/custom_stt_config/provider` response property `allOf` list for the response status `200` - removed the `azure` enum value from the `items/allOf[#/components/schemas/AgentRequest]/custom_stt_config/provider` response property for the response status `200` - removed the `deepgram` enum value from the `items/allOf[#/components/schemas/AgentRequest]/custom_stt_config/provider` response property for the response status `200` - removed the `soniox` enum value from the `items/allOf[#/components/schemas/AgentRequest]/custom_stt_config/provider` response property for the response status `200` - **2026-04-27** `a44406f743c2` — 2 breaking, 64 info - added `#/components/schemas/LanguageLegacy, subschema #2` to the `items/allOf[#/components/schemas/AgentRequest]/language` response property `oneOf` list for the response status `200` - the `items/allOf[#/components/schemas/AgentRequest]/language` response's property type/format changed from `string`/`` to ``/`` for status `200` - removed the `af-ZA` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `ar-SA` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `az-AZ` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `bg-BG` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `bs-BA` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `ca-ES` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `cs-CZ` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `cy-GB` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `da-DK` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `de-DE` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `el-GR` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `en-AU` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `en-GB` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `en-IN` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `en-NZ` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `en-US` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `es-419` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `es-ES` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `fa-IR` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `fi-FI` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `fil-PH` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `fr-CA` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `fr-FR` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `gl-ES` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `he-IL` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `hi-IN` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `hr-HR` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `hu-HU` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `hy-AM` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `id-ID` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `is-IS` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `it-IT` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `ja-JP` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `kk-KZ` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `kn-IN` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `ko-KR` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `lt-LT` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - removed the `lv-LV` enum value from the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - …26 more - **2026-04-20** `8ee53928bf31` — 4 warning - removed the optional property `items/allOf[#/components/schemas/AgentRequest]/normalize_for_speech` from the response with the `200` status - added the new `gemini-3.1-flash-lite` enum value to the `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_model` response property for the response status `200` - added the new `s2-pro` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_model` response property for the response status `200` - added the new `soniox` enum value to the `items/allOf[#/components/schemas/AgentRequest]/custom_stt_config/provider` response property for the response status `200` - **2026-04-01** `56de19127afb` — 1 breaking, 3 info - added `#/components/schemas/AnalysisData, #/components/schemas/CallPresetAnalysisData` to the `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_data/items/` response property `oneOf` list for the response status `200` - added the optional property `items/allOf[#/components/schemas/AgentRequest]/handbook_config` to the response with the `200` status - added the optional property `items/allOf[#/components/schemas/AgentRequest]/timezone` to the response with the `200` status - removed `#/components/schemas/StringAnalysisData, #/components/schemas/EnumAnalysisData, #/components/schemas/BooleanAnalysisData, #/components/schemas/NumberAnalysisData` from the `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_data/items/` response property `oneOf` list for the response status `200` - **2026-03-19** `3aa6f6e028ef` — 2 warning, 2 info - added the new `gpt-5.4-mini` enum value to the `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_model` response property for the response status `200` - added the new `gpt-5.4-nano` enum value to the `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_model` response property for the response status `200` - removed the `sonic-2` enum value from the `items/allOf[#/components/schemas/AgentRequest]/voice_model` response property for the response status `200` - removed the `sonic-turbo` enum value from the `items/allOf[#/components/schemas/AgentRequest]/voice_model` response property for the response status `200` - **2026-03-17** `424df3aa7900` — 2 warning - removed the optional property `items/allOf[#/components/schemas/AgentRequest]/enable_voicemail_detection` from the response with the `200` status - added the new `gpt-5.4` enum value to the `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_model` response property for the response status `200` - **2026-03-09** `8fbf8c54a142` — 2 breaking, 2 warning, 4 info - for the `path` request parameter `agent_id`, the minLength was increased from `0` to `1` - the response property `items/allOf[#/components/schemas/AgentRequest]/custom_stt_config` became nullable for the status `200` - added the new `claude-4.6-sonnet` enum value to the `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_model` response property for the response status `200` - added the new `eleven_v3` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_model` response property for the response status `200` - added the optional property `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_data/items/oneOf[#/components/schemas/BooleanAnalysisData]/required` to the response with the `200` status - added the optional property `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_data/items/oneOf[#/components/schemas/EnumAnalysisData]/required` to the response with the `200` status - added the optional property `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_data/items/oneOf[#/components/schemas/NumberAnalysisData]/required` to the response with the `200` status - added the optional property `items/allOf[#/components/schemas/AgentRequest]/post_call_analysis_data/items/oneOf[#/components/schemas/StringAnalysisData]/required` to the response with the `200` status - **2026-02-26** `e89903d2c910` — 1 info - added the optional property `items/allOf[#/components/schemas/AgentRequest]/enable_dynamic_responsiveness` to the response with the `200` status - **2026-02-23** `bcff6899fa2a` — 1 warning, 2 info - added the new `s1` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_model` response property for the response status `200` - added the optional property `items/allOf[#/components/schemas/AgentRequest]/analysis_user_sentiment_prompt` to the response with the `200` status - added the optional property `items/allOf[#/components/schemas/AgentRequest]/data_storage_retention_days` to the response with the `200` status - **2026-02-11** `076d0088c7ed` — 2 warning - added the new `cs-CZ` enum value to the `items/allOf[#/components/schemas/AgentRequest]/language` response property for the response status `200` - added the new `speech-2.8-turbo` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_model` response property for the response status `200` - **2026-02-10** `0bf5cea5dfcc` — 1 info - added the optional property `items/allOf[#/components/schemas/AgentRequest]/webhook_events` to the response with the `200` status - **2026-02-06** `dfad228ab4a4` — 1 warning, 3 info - added the new `no-denoise` enum value to the `items/allOf[#/components/schemas/AgentRequest]/denoising_mode` response property for the response status `200` - added the optional property `items/allOf[#/components/schemas/AgentRequest]/enable_dynamic_voice_speed` to the response with the `200` status - added the optional property `items/allOf[#/components/schemas/AgentRequest]/guardrail_config` to the response with the `200` status - removed the `none` enum value from the `items/allOf[#/components/schemas/AgentRequest]/denoising_mode` response property for the response status `200` - **2026-01-23** `427e77039f39` — 9 warning - added the new `angry` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_emotion` response property for the response status `200` - added the new `calm` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_emotion` response property for the response status `200` - added the new `fearful` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_emotion` response property for the response status `200` - added the new `happy` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_emotion` response property for the response status `200` - added the new `none` enum value to the `items/allOf[#/components/schemas/AgentRequest]/denoising_mode` response property for the response status `200` - added the new `sad` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_emotion` response property for the response status `200` - added the new `surprised` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_emotion` response property for the response status `200` - added the new `sympathetic` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_emotion` response property for the response status `200` - added the new `undefined` enum value to the `items/allOf[#/components/schemas/AgentRequest]/voice_emotion` response property for the response status `200` - **2026-01-19** `9dbbdaf34f4b` — 1 info - added the optional property `items/allOf[#/components/schemas/AgentRequest]/voice_emotion` to the response with the `200` status --- [Operation](https://skmtc.dev/retellai/apis/retell-sdk/docs/get-agent-versions/:agent_id/get.md) · [API](https://skmtc.dev/retellai/apis/retell-sdk.md) · [Page](https://skmtc.dev/retellai/apis/retell-sdk/changes/get-agent-versions/:agent_id/get)