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.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/instructions/nunocoracao/blowfish/claude-md)<a href="https://agentmods.dev/instructions/nunocoracao/blowfish/claude-md"><img src="https://agentmods.dev/badge/instructions/nunocoracao/blowfish/claude-md/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/instructions/nunocoracao/blowfish/claude-md"><img src="https://agentmods.dev/badge/instructions/nunocoracao/blowfish/claude-md.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 | $0.00305 | $0.00305 |
| Opus 5 | $0.00152 | $0.00152 |
| Sonnet 5 | $0.00061 | $0.00061 |
| Haiku 4.5 | $0.00030 | $0.00030 |
Grade A, and why
blowfish CLAUDE.md 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.
What it actually says
Blowfish
Hugo theme built with Tailwind CSS. Templates in layouts/, Tailwind source in assets/css/main.css compiled to assets/css/compiled/main.css (committed), demo/testbed in exampleSite/, localization in i18n/.
Working on the theme
npm install, thennpm run exampleto preview the demo site;npm run buildto recompile Tailwind (commit the compiled CSS with template changes that use new classes).- All user-facing static text goes through
i18n/lookups — never hardcode strings in templates. - 2-space indent; spaces inside Go template tags (
{{ $x }}); extract repeated template logic into partials; follow the included Prettier config. - No breaking changes: don't rename partials, remove config options, or change template signatures — users' sites silently depend on them.
- Single-purpose commits/PRs with Gitmoji prefixes and imperative mood (≤72-char summary).
Agent skill — keep it in sync
.claude/skills/blowfish/SKILL.md teaches coding agents how to install, configure, and use Blowfish. Any PR that adds/renames/removes a config option, shortcode, homepage/hero/header layout, or installation step must update the skill in the same PR. Treat it like documentation: if exampleSite/content/docs/ needs updating, the skill probably does too.
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 · 16 lines · 305 tokens per session scan A 81ee5aba68c1
blowfish CLAUDE.md is an instructions file published in the GitHub repository nunocoracao/blowfish (2,889 stars, last pushed today), licensed MIT. It adds 305 tokens to every session, about $0.0015 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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