swmm-runner

95 / 100 · Low risk

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

By Zhonghao1995/agentic-swmm-workflow (GitHub) · coding · 33 stars · scanned at commit a3bf4f2

Run EPA SWMM (swmm5) simulations reproducibly and extract key metrics from the report file. Use when an agent needs to (1) run a .inp via swmm5 CLI, (2) generate a run directory with rpt/out + manifest, (3) extract peak flow/time for a node/outfall, (4) parse SWMM continuity (Runoff Quantity / Flow Routing) errors from .rpt, or (5) compare two .rpt files (e.g. GUI vs CLI) for equivalence.

Works with any agent that supports SKILL.md skills.

What this skill can do

Runs commands on your computer

The author does not mention this. Expected for a coding skill.

Found in 3 places.

skills/swmm-runner/scripts/swmm_runner.py, line 129p = subprocess.run(
skills/swmm-runner/scripts/swmm_runner.py, line 135except subprocess.TimeoutExpired as exc:
skills/swmm-runner/scripts/swmm_runner.py, line 358p = subprocess.run([resolve_swmm5(), "--version"], capture_output=True, text=True)

Install

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

if [ -e ~/.agents/skills/'swmm-runner' ] || [ -L ~/.agents/skills/'swmm-runner' ]; then echo 'A skill folder named swmm-runner already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/Zhonghao1995/agentic-swmm-workflow' "$d" && git -C "$d" checkout --quiet 'a3bf4f23469cf4252955901176c86b9c94578963' -- 'skills/swmm-runner' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/swmm-runner' ~/.agents/skills/'swmm-runner' && 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/'swmm-runner' ~/.claude/skills/'swmm-runner' (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
2026-11-07	`a3bf4f2`	95