---
title: "Changes to Send a message to a coding agent, creating a sandbox if needed"
method: POST
path: "/api/v0beta1/agent-sessions"
---

# Changes to Send a message to a coding agent, creating a sandbox if needed

`POST /api/v0beta1/agent-sessions`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 5 of 20 revisions.

- **2026-10-23** `c46868fd7b41`: 2 info
- **2026-09-04** `98225c1e2de0`: 2 info
- **2026-09-01** `9d2fbb0537d1`: 2 info
- **2026-08-26** `7356672619e1`: 1 breaking
- **2026-08-11** `054c89f5ab5b`: 1 info

## Changes

- **2026-10-23** `c46868fd7b41`: 2 info
  - added the new optional request property `sandbox_name`
  - added the new optional request property `sandbox_ref`
- **2026-09-04** `98225c1e2de0`: 2 info
  - added the new optional request property `branch`
  - added the new optional request property `new_branch_name`
- **2026-09-01** `9d2fbb0537d1`: 2 info
  - added the new optional request property `effort`
  - added the new optional request property `model`
- **2026-08-26** `7356672619e1`: 1 breaking
  - the `repo_url` request property's minLength was increased from `0` to `1`
- **2026-08-11** `054c89f5ab5b`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/amika/apis/amika-api/docs/api/v0beta1/agent-sessions/post.md) - [API](https://skmtc.dev/amika/apis/amika-api.md) - [Page](https://skmtc.dev/amika/apis/amika-api/changes/api/v0beta1/agent-sessions/post)