title: SmolDataEnvs Multi-harness | Native OpenCode
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sdk: docker
app_port: 7860
SmolDataEnvs: Native OpenCode
Read the multi-harness RL article 路 Collection 路 Training tutorial
Native OpenCode runs inside the sandbox. The server grades its answer and returns a typed token trace for AsyncGRPO.
opencode_env is deprecated since OpenEnv 0.7.0. This environment remains available for the historical comparison; new runs should use the Harbor Space with harness="opencode". Rebuilding this standalone Space from main will stop working once upstream removes opencode_env.
This folder contains the complete Space source. You can run it locally or deploy it on its own.
Read the code
smoldataenv_opencode/environment.py: task execution and grading.smoldataenv_opencode/server.py: OpenEnv server and UI.prepare.pyanddata/: the pinned 1,000 train / 250 test tasks, with grader and split checks.Dockerfile: exactly what the Space builds.
Run locally
Use Python 3.12. From this directory:
uv venv --python 3.12 --seed .venv
source .venv/bin/activate
bash install.sh
hf auth login
export HF_TOKEN="$(hf auth token)"
export DAYTONA_API_KEY="your-key"
bash start.sh
Open http://localhost:7860/. It opens the UI at /web/; the API is at /docs and health at /health. install.sh installs OpenEnv from main and its environment examples from the same checkout. This server needs no GPU or TRL installation.
For agent rollouts, set SANDBOX_VLLM_URL and the secret SANDBOX_VLLM_KEY to an inference endpoint reachable by the sandbox. Training requires engine token IDs and logprobs.
Deploy this folder
python deploy.py --repo YOUR_ORG/smoldataenv-multi-harness-opencode --public
Add HF_TOKEN and DAYTONA_API_KEY as Space secrets. The uploader sends the files in this directory, without generating or swapping application code. It enables the UI and preserves an existing concurrency limit. For a new Space the limit defaults to 40; use --concurrency to change it. CPU Basic serves the API; actual tasks run in Daytona.
You can test the same image locally:
docker build -t smoldataenv-opencode .
docker run --rm -p 7860:7860 -e HF_TOKEN -e DAYTONA_API_KEY smoldataenv-opencode
Runtime downloads, local credentials and old deployment archives are excluded from uploads and Docker builds. Task questions and held-out answers are never bundled into the image; the pinned tasks are prepared at startup.