---
title: "Changes to Update an agent session"
method: POST
path: "/agents/sessions/{session_id}"
---

# Changes to Update an agent session

`POST /agents/sessions/{session_id}`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 7 of 88 revisions.

- **2026-10-29** `0a26f104d35f`: 1 info
- **2026-10-28** `81bec64c97ee`: 1 info
- **2026-10-23** `edf54d38a1a0`: 1 breaking, 1 info
- **2026-10-16** `909d15009c82`: 1 info
- **2026-10-16** `d9e93345b02a`: 2 warning
- **2026-10-08** `a95c419c9257`: 2 info
- **2026-10-05** `7f654af7f94f`: 1 info

## Changes

- **2026-10-29** `0a26f104d35f`: 1 info
  - added the optional property `agent/experimental` to the response with the `200` status
- **2026-10-28** `81bec64c97ee`: 1 info
  - added the optional property `agent/compaction` to the response with the `200` status
- **2026-10-23** `edf54d38a1a0`: 1 breaking, 1 info
  - added `#/components/schemas/AgentToolResourceAutomations` to the `agent/tools/items/` response property `oneOf` list for the response status `200`
  - added `automations` discriminator mapping keys to the `agent/tools/items/` response property for the response status `200`
- **2026-10-16** `909d15009c82`: 1 info
  - added the new `ultrafast` enum value to the request property `agent/service_tier/anyOf[#/components/schemas/ServiceTierParam]/`
- **2026-10-16** `d9e93345b02a`: 2 warning
  - removed the request property `spend_control`
  - removed the optional property `spend_control` from the response with the `200` status
- **2026-10-08** `a95c419c9257`: 2 info
  - added the new optional request property `spend_control`
  - added the optional property `spend_control` to the response with the `200` status
- **2026-10-05** `7f654af7f94f`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/omnistack-sh/apis/openai-api/docs/agents/sessions/:session_id/post.md) - [API](https://skmtc.dev/omnistack-sh/apis/openai-api.md) - [Page](https://skmtc.dev/omnistack-sh/apis/openai-api/changes/agents/sessions/:session_id/post)