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.
npx skills add Zhonghao1995/Agentic-HEC-RAS --skill ras-end-to-endgit clone --depth 1 https://github.com/Zhonghao1995/Agentic-HEC-RASWrote 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.
[](https://agentmods.dev/skills/zhonghao1995/agentic-hec-ras/ras-end-to-end)<a href="https://agentmods.dev/skills/zhonghao1995/agentic-hec-ras/ras-end-to-end"><img src="https://agentmods.dev/badge/skills/zhonghao1995/agentic-hec-ras/ras-end-to-end/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.
<a href="https://agentmods.dev/skills/zhonghao1995/agentic-hec-ras/ras-end-to-end"><img src="https://agentmods.dev/badge/skills/zhonghao1995/agentic-hec-ras/ras-end-to-end.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00113 | $0.01589 |
| Opus 5 | $0.00056 | $0.00794 |
| Sonnet 5 | $0.00023 | $0.00318 |
| Haiku 4.5 | $0.00011 | $0.00159 |
Grade A, and why
ras-end-to-end 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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.
HEC-RAS End-to-End (SOP)
The other ras-* skills describe one tool group each. This one says how they fit
together, what must be true before a number or figure is reported, and when to stop.
1. Pick an operating mode (state it in the first reply)
| Mode | When | Chain | HEC-RAS install |
|---|---|---|---|
| A. Read / plot only | a .p##.hdf already exists, or no HEC-RAS install |
ras-results -> ras-audit |
none |
| B. Run an existing plan | a .prj and a goal ("run the 2D plan") |
ras_project_copy -> ras-model (info) -> ras-runner -> ras-results -> ras-audit |
yes |
| C. What-if / compare | "what if inflow is +20 %", "shorter time step", "before vs after" | copy baseline + copy variant -> ras-model (edit variant only) -> ras-runner x2 -> ras-results (compare + plots) -> ras-audit |
yes |
| D. New event | a hydrograph / hyetograph CSV to drive the model | ras-model (ras_flow_set_hydrograph values) -> B |
yes |
If the goal only needs Mode A, do not touch the model at all: it is faster and needs no HEC-RAS. Building a NEW model (terrain, 2D mesh, cross sections, infiltration layers) is out of scope: that is RAS Mapper / GUI work — say so and stop.
2. Standard run directory (create it, use it everywhere)
runs/<case>/
00_baseline/ COPY of the whole project folder (ras_project_copy) — run in place
00_<variant>/ second COPY for a what-if (edit + run in place)
03_plots/ every PNG (ras_plot)
manifest.json ras_manifest_write, written last
Results (<name>.p##.hdf, .computeMsgs.txt, .bco##) land next to the copied .prj.
3. Hard rules
- Copy first, always the whole folder (
ras_project_copy). Plan / flow edits rewrite.p##/.u##in place and a run writes results next to the project; terrain, land cover and DSS files are referenced relatively, so copying only the.prjbreaks the run. - Gate on
status/usable, notok.ras_runreturnsok:truewhenever the call returned. Usable =statusin{completed, completed_with_warnings};unstable/failed/no_results/unknown= do not report the numbers, surfacereasons,metrics,log_tail,log_file. - Discover ids before using them.
ras_project_info(plans, geometries, flow files, boundary indices, river/reach/RS),ras_results_summary(cross-section labels, mesh names, reference line names). Never invent a plan number, boundary, station or mesh name. - Variants are copies, not plans in the same folder. A what-if edit goes on its own copy so the baseline HDF is never overwritten (same plan number, different folder).
- Edit the flow file the plan actually uses.
ras_flow_set_hydrographwithplanresolves the plan's.u##; several plans can share one.u##— say so if they do. - Long runs block. A 2D run can take minutes to hours; set
num_cores(2-8), keep the client's MCP timeout in mind, and never start a second run of the same copy while one is running. - Evidence only. Report a number only from a tool return; report a figure only when
ras_plotreturnedok:trueandpng; say "not run" for anything skipped.
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.
- 12d ago First seen · 94 lines · 113 tokens per session scan A 05044b97288f
ras-end-to-end is a skill published in the GitHub repository Zhonghao1995/Agentic-HEC-RAS (1 stars, last pushed 26d ago), licensed MIT. It adds 113 tokens to every session and 1,589 once invoked, about $0.0006 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 2026-08-31.
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