---
title: "Changes to Create realtime session"
method: POST
path: "/v1/realtime_sessions"
---

# Changes to Create realtime session

`POST /v1/realtime_sessions`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 7 of 67 revisions.

- **2026-09-03** `1c0d2ae99f66`: 1 breaking, 8 warning, 2 info
- **2026-07-06** `f411647abba7`: 2 info
- **2026-04-15** `6f5bc53a0d36`: 2 info
- **2026-04-10** `ee023fb84f0e`: 2 breaking, 2 info
- **2026-04-01** `8efb262fec20`: 1 info
- **2026-03-18** `618b98a98e5d`: 3 info
- **2026-03-06** `4ddc8e3d83c8`: 1 info

## Changes

- **2026-09-03** `1c0d2ae99f66`: 1 breaking, 8 warning, 2 info
  - the request's body type changed from `object` to no type
  - removed the request property `avatar`
  - removed the request property `integration`
  - removed the request property `livekit`
  - removed the request property `maxDuration`
  - removed the request property `model`
  - removed the request property `personality`
  - removed the request property `startScript`
  - removed the request property `tools`
  - added request discriminator
  - added `subschema #1` to the request body `oneOf` list
- **2026-07-06** `f411647abba7`: 2 info
  - added the new optional request property `integration`
  - added the new optional request property `livekit`
- **2026-04-15** `6f5bc53a0d36`: 2 info
  - the `maxDuration` request property's max was increased from `300.00` to `1800.00`
  - the `personality` request property's maxLength was increased from `2000` to `10000`
- **2026-04-10** `ee023fb84f0e`: 2 breaking, 2 info
  - removed `subschema #1: StringParameter, subschema #2: IntegerParameter, subschema #3: NumberParameter, subschema #4: BooleanParameter, subschema #5: ArrayParameter, subschema #6: ObjectParameter` from the `tools/items/oneOf[subschema #1: ClientEventTool]/parameters/items/oneOf[subschema #6: ObjectParameter]/properties/items/` request property `oneOf` list
  - removed `subschema #1: StringParameter, subschema #2: IntegerParameter, subschema #3: NumberParameter, subschema #4: BooleanParameter, subschema #5: ArrayParameter, subschema #6: ObjectParameter` from the `tools/items/oneOf[subschema #2: BackendRPCTool]/parameters/items/oneOf[subschema #6: ObjectParameter]/properties/items/` request property `oneOf` list
  - removed discriminator from `tools/items/oneOf[subschema #1: ClientEventTool]/parameters/items/oneOf[subschema #6: ObjectParameter]/properties/items/` request property
  - removed discriminator from `tools/items/oneOf[subschema #2: BackendRPCTool]/parameters/items/oneOf[subschema #6: ObjectParameter]/properties/items/` request property
- **2026-04-01** `8efb262fec20`: 1 info
  - added the new optional request property `tools`
- **2026-03-18** `618b98a98e5d`: 3 info
  - added the new optional request property `personality`
  - added the new optional request property `startScript`
  - the `maxDuration` request property default value changed from `120` to `300`
- **2026-03-06** `4ddc8e3d83c8`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/runwayml/apis/runwayml-api/docs/v1/realtime_sessions/post.md) - [API](https://skmtc.dev/runwayml/apis/runwayml-api.md) - [Page](https://skmtc.dev/runwayml/apis/runwayml-api/changes/v1/realtime_sessions/post)