Blowfish is a personal website and blog theme for Hugo, a tool that generates websites from content files. Hugo users use it to create customizable blogs and other content-focused sites. Its catalogue add-ons help AI coding agents install and configure the theme.
Borrowing it
Nothing to install: this file belongs to nunocoracao/blowfish. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/nunocoracao/blowfish/main/.claude/skills/blowfish/SKILL.mdgit clone --depth 1 https://github.com/nunocoracao/blowfishWrote 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/nunocoracao/blowfish/blowfish)<a href="https://agentmods.dev/skills/nunocoracao/blowfish/blowfish"><img src="https://agentmods.dev/badge/skills/nunocoracao/blowfish/blowfish/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/nunocoracao/blowfish/blowfish"><img src="https://agentmods.dev/badge/skills/nunocoracao/blowfish/blowfish.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, 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 MCP Rug Pull · line 16 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00067 | $0.02439 |
| Opus 5 | $0.00034 | $0.01220 |
| Sonnet 5 | $0.00013 | $0.00488 |
| Haiku 4.5 | $0.00007 | $0.00244 |
Grade A, and why
blowfish 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 11d 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 — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Blowfish theme
Blowfish is a lightweight Hugo theme built with Tailwind CSS. Docs: https://blowfish.page/ · Repo: https://github.com/nunocoracao/blowfish
Requires Hugo extended edition, within the version range declared in the theme's config.toml under [module.hugoVersion] (check that file — the range is a rolling window that tracks recent Hugo releases).
Installing
Full walkthrough: https://blowfish.page/docs/installation/
- Blowfish Tools CLI:
npx blowfish-tools— interactive setup that scaffolds the site and config.npx blowfish-tools new <site>creates project + theme in one go. - Git submodule:
Then setgit init # if not already a repo git submodule add -b main https://github.com/nunocoracao/blowfish.git themes/blowfishtheme = "blowfish"in the site'sconfig/_default/hugo.toml. - Hugo module:
hugo mod init github.com/<user>/<repo>then inconfig/_default/module.toml:[[imports]] path = "github.com/nunocoracao/blowfish/v3" - Manual: download the latest release archive, extract to
themes/blowfish/, settheme = "blowfish".
After installing (any method): delete the site's generated hugo.toml in the project root, and copy the theme's config/_default/*.toml files into the site's config/_default/ (don't overwrite module.toml if using Hugo modules). A ready-made zip of the config files: https://github.com/nunocoracao/blowfish/releases/latest/download/config-default.zip
Updating
- Git submodule:
git submodule update --remote --merge - Hugo module:
hugo mod get -u(inspectsmodule.toml+go.mod) - Manual: download the latest release and replace
themes/blowfish/entirely (local edits inside the theme folder are lost — site-level overrides are safe). - Upgrading v2 → v3: fully backwards compatible; all new features are opt-in and nothing was removed or renamed. Hugo-module users change the import path
…/blowfish/v2→…/blowfish/v3inmodule.toml, thenhugo mod get -u. Other methods need no changes. Details: https://blowfish.page/docs/installation/#upgrading-from-v2-to-v3
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.
- 11d ago First seen · 96 lines · 67 tokens per session scan A 4f70a97d4411
blowfish is a skill published in the GitHub repository nunocoracao/blowfish (2,890 stars, last pushed today), licensed MIT. It adds 67 tokens to every session and 2,439 once invoked, about $0.0003 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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