---
title: "Changes to Update an agent's runtime harness and default model"
method: PATCH
path: "/api/agents/{id}/runtime"
---

# Changes to Update an agent's runtime harness and default model

`PATCH /api/agents/{id}/runtime`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 4 of 105 revisions.

- **2026-09-03** `0f5503f5cd28` — 3 warning
- **2026-08-07** `06cac6a7c5bc` — 3 info
- **2026-07-10** `5b7df66bb887` — 1 info
- **2026-07-02** `0c910612f9ac` — 1 breaking

## Changes

- **2026-09-03** `0f5503f5cd28` — 3 warning
  - added the new `acp` enum value to the `allOf[#/components/schemas/Agent]/credStatus/oneOf[#/components/schemas/AgentCredStatus]/latestModel/harnessProvider` response property for the response status `200`
  - added the new `acp` enum value to the `allOf[#/components/schemas/Agent]/harnessProvider` response property for the response status `200`
  - added the new `acp` enum value to the `allOf[#/components/schemas/Agent]/provider` response property for the response status `200`
- **2026-08-07** `06cac6a7c5bc` — 3 info
  - added the media type `application/json` for the response with the status `200`
  - added the media type `application/json` for the response with the status `400`
  - added the media type `application/json` for the response with the status `404`
- **2026-07-10** `5b7df66bb887` — 1 info
  - added the new `max` enum value to the request property `reasoning_effort`
- **2026-07-02** `0c910612f9ac` — 1 breaking
  - removed the enum value `max` of the request property `reasoning_effort`

---

[Operation](https://skmtc.dev/desplega-ai/apis/agent-swarm-api/docs/api/agents/:id/runtime/patch.md) · [API](https://skmtc.dev/desplega-ai/apis/agent-swarm-api.md) · [Page](https://skmtc.dev/desplega-ai/apis/agent-swarm-api/changes/api/agents/:id/runtime/patch)