Borrowing it
Nothing to install: this file belongs to justifi-tech/web-component-library. 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/justifi-tech/web-component-library/main/CLAUDE.mdgit clone --depth 1 https://github.com/justifi-tech/web-component-libraryWrote 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/justifi-tech/web-component-library/claude-md)<a href="https://agentmods.dev/instructions/justifi-tech/web-component-library/claude-md"><img src="https://agentmods.dev/badge/instructions/justifi-tech/web-component-library/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/justifi-tech/web-component-library/claude-md"><img src="https://agentmods.dev/badge/instructions/justifi-tech/web-component-library/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 | $0.00371 | $0.00371 |
| Opus 5.5 | $0.00148 | $0.00148 |
| Sonnet 5.5 | $0.00074 | $0.00074 |
| Haiku 4.5 | $0.00037 | $0.00037 |
Grade A, and why
web-component-library 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 6d 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
Rules
- Be extremely concise in interactions and commit messages. Sacrifice grammar for concision.
- All package scripts are allowed —
test,test:e2e,lint,build,dev,start,dev:server,format,clean. Two have wide blast radius, so say what you're doing first:formatrewrites every.ts/.tsx/.mdin the repo, andcleandeletesnode_modules(reinstall withpnpm install). - Always verify tests pass and lint is clean before marking work complete.
- When working on E2E tests, always read
apps/component-examples/e2e/README.mdfirst. - How to write a test:
.claude/skills/testing/SKILL.md.
Commands
pnpm --filter @justifi/webcomponents test # spec suite (fast — skips turbo's build)
pnpm --filter @justifi/webcomponents test -- <name> # one file or test name
pnpm --filter @justifi/webcomponents lint # lint
pnpm build # turbo build
pnpm test # turbo test — builds first
pnpm test:e2e # E2E; starts :3000 itself if nothing serves it
pnpm dev:server # stencil watch + examples server — never exits, background it
Prefer the --filter form for spec runs: spec tests compile their own sources, so turbo's build step buys nothing. Read the output for Tests:; a piped exit code is the pipe's.
API Documentation
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.
- 6d ago Changed · +15 lines · +239 tokens per session 5e54d8ffe40b
- 2mo ago First seen · 12 lines · 132 tokens per session scan A cf8afefe79c7
web-component-library CLAUDE.md is an instructions file published in the GitHub repository justifi-tech/web-component-library (5 stars, last pushed yesterday), licensed MIT. It adds 371 tokens to every session, about $0.0015 per session on Opus 5.5. 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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