oh-my-hermes is an operating layer for Hermes Agent that organizes requests into workflows for planning, research, creation, coding handoffs, operations, and project memory. Hermes users run these workflows through the desktop app, CLI, or messenger app, while the catalogue add-ons extend its native capabilities.
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 rlaope/oh-my-hermes --skill omh-codebase-umlgit clone --depth 1 https://github.com/rlaope/oh-my-hermesWrote 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/rlaope/oh-my-hermes/omh-codebase-uml)<a href="https://agentmods.dev/skills/rlaope/oh-my-hermes/omh-codebase-uml"><img src="https://agentmods.dev/badge/skills/rlaope/oh-my-hermes/omh-codebase-uml/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/rlaope/oh-my-hermes/omh-codebase-uml"><img src="https://agentmods.dev/badge/skills/rlaope/oh-my-hermes/omh-codebase-uml.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00093 | $0.02065 |
| Opus 5 | $0.00046 | $0.01033 |
| Sonnet 5 | $0.00019 | $0.00413 |
| Haiku 4.5 | $0.00009 | $0.00206 |
Grade A, and why
omh-codebase-uml 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 yesterday.
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 — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Codebase Uml
This is a Hermes-native codebase-uml workflow skill.
Why This Exists
codebase-uml exists so 'visualize our codebase' produces one deterministic, readable picture instead of a hand-drawn guess: the interface each unit exposes is ranked by who imports it, the layout is bounded before PlantUML sees it, and every omission the bounding made is printed on the image.
Do Not Use When
- The user wants the local code index refreshed or a task-scoped handoff pack, not a picture; use
codegraph-refresh. - The user wants a narrative first-read tour, reading path, or glossary; use
codebase-onboarding. - The user wants a summary card, thumbnail, or explainer image of a PR, meeting, or release rather than a structural diagram; use
img-summary.
Examples
Good example:
- Prompt: Visualize our codebase and drop the picture here so the new teammate can see how the routing package fits.
- Expected behavior: Run
omh codegraph uml --focus src/routing --output .omh/uml/routing.puml, render with the plan's command, attach the PNG, and read back the legend (units shown, folded, edges pruned). - Why: The request is a structural picture of one area for a chat surface, which is exactly the bounded diagram this workflow produces.
Bad example:
- Prompt: Just sketch what you think the architecture looks like from the README.
- Expected behavior: Decline to draw from memory; generate the diagram from the tree with
omh codegraph umlor say the renderer is missing and name the install step. - Why: A diagram not derived from the actual tree misleads more than no diagram.
Completion Checklist
- The view (package, focus, or module) matches the question asked, and only one view was rendered unless more were requested.
- The render command and its observed result are recorded before the image is claimed.
- The legend's omissions were read back to the user in the reply.
- Follow-up exploration used narrower generated views, not recollection of the first picture.
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.
- yesterday Changed 055bc9e33539
- 4d ago Changed · +1 lines 5c89ec988596
- 6d ago First seen · 131 lines · 93 tokens per session scan A ce7f446fda9e
omh-codebase-uml is a skill published in the GitHub repository rlaope/oh-my-hermes (1,605 stars, last pushed today), licensed MIT. It adds 93 tokens to every session and 2,065 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 2026-09-03.
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