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 AtlasOmnia/donna-starter --skill hermes-themesgit clone --depth 1 https://github.com/AtlasOmnia/donna-starterWrote 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/atlasomnia/donna-starter/hermes-themes)<a href="https://agentmods.dev/skills/atlasomnia/donna-starter/hermes-themes"><img src="https://agentmods.dev/badge/skills/atlasomnia/donna-starter/hermes-themes/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/atlasomnia/donna-starter/hermes-themes"><img src="https://agentmods.dev/badge/skills/atlasomnia/donna-starter/hermes-themes.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 40 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 88 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 | $0.00020 | $0.01884 |
| Opus 5 | $0.00010 | $0.00942 |
| Sonnet 5 | $0.00004 | $0.00377 |
| Haiku 4.5 | $0.00002 | $0.00188 |
Grade A, and why
hermes-themes scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
1 near-identical copy found in the catalogue:
- hermes-themes — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 151 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Hermes Themes Skill
Author a Hermes skin — one YAML file that themes the CLI, the TUI, and the
desktop GUI at once. The skin engine (hermes_cli/skin_engine.py) resolves the
active skin and the gateway pushes it to every surface, so a file dropped in
~/.hermes/skins/ is the theme analogue of a plugin: no code, all surfaces. This
skill covers writing a good skin and activating it; it does not build GUI theme
editors or ship built-in presets.
When to Use
- The user asks for a custom look ("make me a synthwave theme", "dark forest vibes", "match my brand colors") for Hermes itself.
- The user wants the CLI/TUI/desktop to share one coordinated palette.
- The user wants to iterate live ("that coral is too loud, make it teal") — edit the active skin's YAML and every surface repaints as your tool finishes.
Prerequisites
- Write access to the Hermes home dir —
~/.hermesby default, or$HERMES_HOME/ the active profile's dir. Skins live in<hermes-home>/skins/. - Native tools:
write_file(create the YAML),read_file/search_files(inspect existing skins),terminal(activate viahermes config set).
How to Run
- Pick a lowercase, hyphen-safe
name(e.g.synthwave). - Copy
templates/skin.yamland fill in the palette (keep every key — missing keys inherit thedefaultskin). write_fileit to<hermes-home>/skins/<name>.yaml.- Activate it (see Procedure). Confirm the change landed.
Quick Reference — element → key
Hex (#rrggbb). Theming is semantic: one key colors every element that plays
that role, so match the element to its key. To recolor a specific element, set the
key in its row (element-specific keys fall back to the shared one when unset).
| Visible element | Key to set | Falls back to |
|---|---|---|
| App background (whole TUI + GUI) | background |
terminal default |
Tool-call marker (●, tool spinner) |
ui_tool |
ui_accent |
| Thinking / reasoning text | ui_thinking |
banner_dim |
Accent — headings, links, chevrons, Σ |
ui_accent / banner_accent |
— |
| Heading / primary text | banner_title / ui_primary |
— |
| Body / label text, user messages | ui_text / banner_text, ui_label |
— |
| Muted / secondary, tree connectors | banner_dim |
— |
| Borders, rules, gutters | ui_border / banner_border |
— |
| Prompt symbol color | prompt |
banner_text |
| Success / warn / error | ui_ok / ui_warn / ui_error |
— |
| Status bar text + usage | status_bar_text, status_bar_good/warn/bad/critical |
— |
| Diff add/remove (line + word) | diff_added / diff_removed / diff_added_word / diff_removed_word |
built-in |
| Code syntax (string/number/keyword/comment) | syntax_string / syntax_number / syntax_keyword / syntax_comment |
accent/text/border/muted |
| Completion menu | completion_menu_bg / completion_menu_current_bg / …_meta_bg |
— |
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 10d ago First seen · 151 lines · 20 tokens per session scan A b0a42200454d
hermes-themes is a skill published in the GitHub repository AtlasOmnia/donna-starter (110 stars, last pushed 10d ago), licensed MIT. It adds 20 tokens to every session and 1,884 once invoked, about $0.0001 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.
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