swmm-canada

swmm-canada is a skill for Claude Code, Codex from Zhonghao1995/agentic-swmm-workflow. It costs 102 tokens per session (1,487 once invoked), scanned A, original, MIT.

A service that fetches a ready-to-run SWMM stormwater model for an area in Canada. It uses published municipal drainage networks where available and creates a model from other data elsewhere in Canada.

In plain words
What is it for?
Use it with a Canadian bounding box or map polygon and a rainfall date range to obtain a SWMM model for that area. For locations outside Canada, use a different global model workflow.
Why use it?
Building a drainage model from local geographic and rainfall data can take substantial preparation. This service provides a standard starting model and can continue with running, auditing, calibration, and forcing it in one run folder.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it with a Canadian bounding box or map polygon and a rainfall date range to obtain a SWMM model for that area. For locations outside Canada, use a different global model workflow.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/zhonghao1995/agentic-swmm-workflow/swmm-canada
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Zhonghao1995/agentic-swmm-workflow --skill swmm-canada
Clone the repo
git clone --depth 1 https://github.com/Zhonghao1995/agentic-swmm-workflow

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for swmm-canada

README.md
[![agentmods](https://agentmods.dev/badge/skills/zhonghao1995/agentic-swmm-workflow/swmm-canada/github.svg)](https://agentmods.dev/skills/zhonghao1995/agentic-swmm-workflow/swmm-canada)
Your own site
<a href="https://agentmods.dev/skills/zhonghao1995/agentic-swmm-workflow/swmm-canada"><img src="https://agentmods.dev/badge/skills/zhonghao1995/agentic-swmm-workflow/swmm-canada/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for swmm-canada

Your own site · 80×15
<a href="https://agentmods.dev/skills/zhonghao1995/agentic-swmm-workflow/swmm-canada"><img src="https://agentmods.dev/badge/skills/zhonghao1995/agentic-swmm-workflow/swmm-canada.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 102 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,487 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00102 $0.01487
Opus 5 $0.00051 $0.00744
Sonnet 5 $0.00020 $0.00297
Haiku 4.5 $0.00010 $0.00149

Measured 10d ago against content hash c5ade7f1f95b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

swmm-canada scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/swmm-canada/SKILL.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

swmm-canada

Fetch a ready-to-run SWMM model for a Canadian area from the SWMMCanada upstream service, then run, audit, calibrate, and force it in one canonical run folder.

Use for any AOI inside Canada. The service auto-selects the build mode: real published municipal storm networks where a supported city covers the AOI (35 cities at the 2026-08 sync, e.g. Victoria, Ottawa, Toronto, Calgary, Vancouver, Regina), synthesized anywhere else in the country. Outside Canada, route to swmm-anywhere (global, synthesized).

This skill is a documentation contract: the implementation is the in-process typed tool fetch_swmm_from_canada (a pure-stdlib HTTP client, ADR-0001). There is no script directory and no MCP server here, and that is deliberate — the service boundary is HTTP, and the tool is already on the runtime's golden path.

What this skill does

Given an AOI (bbox [min_lon, min_lat, max_lon, max_lat] or a GeoJSON Polygon string) and a rainfall date window (start_date, end_date, ISO dates):

  1. Announces a preview (best effort): which mode and city the service will use.
  2. Submits the build to the SWMMCanada tasks API and polls with live progress (network fetch, subcatchments, DEM, landcover/soil, climate, build).
  3. Downloads the model bundle and lands it in the canonical layout (ADR-0004): model.inp in 05_builder/ (with a [REPORT] section injected when the upstream INP omits one, so the binary output carries per-element series), the full swmm_model.zip in 10_upstream/swmmcanada/ as the pristine provenance artifact, and the bundle's returned DATA unpacked into 00_raw/swmmcanada/ (datastore, DEM, land cover, soil rasters, exports) so the run's raw material is browsable beside the other inputs. A study-area map is rendered best-effort to 00_raw/study_area.png (needs the gis extra; the fetch never fails over the map) and is picked up by swmm-report's figures section.
  4. Returns the INP path, run directory, service URL, task id, build mode, and the upstream validation record.

Read the full file on GitHub · 72 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 72 lines · 102 tokens per session scan A c5ade7f1f95b

Subscribe to this mod's changes

swmm-canada is a skill published in the GitHub repository Zhonghao1995/agentic-swmm-workflow (27 stars, last pushed 4d ago), licensed MIT. It adds 102 tokens to every session and 1,487 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

arxiv-summarizer-orchestrator

End-to-end orchestration skill for periodic arXiv collection and reporting using three sub-skills: arxiv-search-collector, arxiv-paper-processor, and arxiv-batch-reporter. Supports manual language control across all markdown outputs and Stage-B processing strategy (subagentparallel default max 5, or serial).

InternLM/WildClawBench · 75 tokens

academic-literature-search

A multi-database search tool for academic papers and other scholarly publications. It searches sources such as Semantic Scholar, Crossref, arXiv, and PubMed, which cover research across fields including computing, physics, and medicine.

InternLM/WildClawBench · 0 tokens

cuopt-numerical-optimization-formulation

LP, MILP, QP — concepts, problem-text parsing, and formulation patterns (parameters, constraints, decisions, objective). Concepts only; no API.

NVIDIA/skills · 42 tokens

nemo-mbridge-perf-expert-parallel-overlap

Validate and use MoE expert-parallel communication overlap in Megatron-Bridge, including overlapmoeexpertparallelcomm, delaywgradcompute, and flex dispatcher backends such as DeepEP and HybridEP.

NVIDIA/skills · 56 tokens

earth2studio-create-datasource

Create and validate Earth2Studio data source wrappers (DataSource, ForecastSource, DataFrameSource, ForecastFrameSource) from remote stores. Do NOT use for fetching data with existing sources, model inference, or installation tasks.

NVIDIA/skills · 53 tokens

earth2studio-data-fetch

Fetch weather/climate data via Earth2Studio data sources for specific variables and times. Do NOT use for inference pipelines, model discovery, or installation.

NVIDIA/skills · 36 tokens