---
title: "Download Tune Artifact"
method: GET
path: "/tune/{session_id}/artifacts/{name}"
tags: ["tune"]
---

# Download Tune Artifact

`GET /tune/{session_id}/artifacts/{name}`

Download one of the canonical tune artifacts:
`best_params.json`, `tune_results.json`, `history.jsonl`,
`report.md`, `tuned_physics.usd`, or the optional visual judge
contact sheet `comparison.png`.

## Path parameters

- `session_id` string, required
- `name` string, required

## Response `200`

Artifact bytes

## Other responses

- `404` — Unknown artifact or session not found

## Changes

- **2026-05-27** `bef81aa36f74` — 1 info
  - endpoint added
- **2026-04-29** `0ba9e71b823c` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/nvidia/apis/physics-agent-service/changes/tune/:session_id/artifacts/:name/get.md)

---

[API](https://skmtc.dev/nvidia/apis/physics-agent-service.md) · [All operations](https://skmtc.dev/nvidia/apis/physics-agent-service/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/nvidia/physics-agent-service/revisions/47f3bc191c91/schema)