cortex-training-rl

97 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By OpenHands/extensions (GitHub) · coding · 182 stars · scanned at commit b98ac06

Run reinforcement-learning post-training of a model inside the OpenHands agent harness on Snowflake Cortex Training for any Harbor training and eval task directories or SWE-smith code localization, and generate the reward convergence graph. Use when asked to launch, monitor, debug, stop, or plot an OpenHands or Harbor RL run on Cortex Training.

Works with any agent that supports SKILL.md skills.

What this skill can do

Runs commands on your computer

This is disclosed by the author in the skill's SKILL.md or README. Expected for a coding skill.

Found in 9 places.

skills/cortex-training-rl/SKILL.md, line 45cortex-training login ~/cortex-training-config.json # once per machine
skills/cortex-training-rl/SKILL.md, line 61tmux ls -F '#{session_name}' 2>/dev/null | grep '^openhands-' | xargs -r -n1 tmux kill-session -t
skills/cortex-training-rl/SKILL.md, line 69git clone https://github.com/Snowflake-AI-Research/Arctic-Platform && cd Arctic-Platform

Show 6 more

skills/cortex-training-rl/SKILL.md, line 77uv run recipes/rl/harbor/prepare_data.py \
skills/cortex-training-rl/SKILL.md, line 83uv run recipes/rl/openhands/code_localization/prepare_data.py
skills/cortex-training-rl/SKILL.md, line 93export RUN_NAME=qwen35-4b-harbor-rl-$(date +%m%d-%H%M)
skills/cortex-training-rl/SKILL.md, line 124export RUN_NAME=qwen35-4b-openhands-$(date +%m%d-%H%M)
skills/cortex-training-rl/SKILL.md, line 140sed 's/\x1b\[[0-9;]*m//g' "$CKPT_DIR/$RUN_NAME.log" | grep -oE "'reward/avg_raw_reward': '[0-9.]+'"
skills/cortex-training-rl/SKILL.md, line 152kill -TERM "$(cat "$CKPT_DIR/launcher.pid")"

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'cortex-training-rl' ] || [ -L ~/.agents/skills/'cortex-training-rl' ]; then echo 'A skill folder named cortex-training-rl already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/OpenHands/extensions' "$d" && git -C "$d" checkout --quiet 'b98ac0671a51cc91bab3609bf4d334c7c832dd98' -- 'skills/cortex-training-rl' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/cortex-training-rl' ~/.agents/skills/'cortex-training-rl' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'cortex-training-rl' ~/.claude/skills/'cortex-training-rl' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-12	`b98ac06`	97