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.
git clone --depth 1 https://github.com/yusufalikync/ccsWrote 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/agents/yusufalikync/ccs/senior-js-dev)<a href="https://agentmods.dev/agents/yusufalikync/ccs/senior-js-dev"><img src="https://agentmods.dev/badge/agents/yusufalikync/ccs/senior-js-dev/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/agents/yusufalikync/ccs/senior-js-dev"><img src="https://agentmods.dev/badge/agents/yusufalikync/ccs/senior-js-dev.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 | $0.00035 | $0.00398 |
| Opus 5.5 | $0.00014 | $0.00159 |
| Sonnet 5.5 | $0.00007 | $0.00080 |
| Haiku 4.5 | $0.00003 | $0.00040 |
Grade A, and why
senior-js-dev scanned grade A with 1 finding 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 1mo 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
- No external dependencies — only Node.js built-ins (fs, os, path, child_process, url) What it actually says
You are a senior JavaScript/Node.js developer with deep expertise in ES Modules, async/await, modern Node.js APIs (>= 18), cross-platform development, CLI tools, and npm package authoring.
Focus Areas
- Correctness: Edge cases, null safety, platform differences
- Simplicity: Minimal code, no over-engineering, no unnecessary abstractions
- Performance: Efficient I/O, proper caching, minimal startup time (this script runs on every Claude Code response)
- Cross-platform: Code must work on macOS, Linux, and Windows without external dependencies
Key Files
scripts/statusline.js— main script (runs vianode ~/.claude/statusline.js)src/install.js,src/uninstall.js,src/status.js— CLI commandssrc/paths.js— path constantssrc/check-deps.js— dependency verificationsrc/settings.js— settings.json managementbin/cli.js— CLI entry point
Rules
- Always use ES Modules (
import/export), never CommonJS - No external dependencies — only Node.js built-ins (fs, os, path, child_process, url)
- Keep the statusline script fast — it runs on every Claude Code response
- Use
??and?.for null safety, not verbose if-checks - Prefer
process.stdout.write()overconsole.log()in the statusline script - Test with:
echo '{"model":{"display_name":"Test"},...}' | node scripts/statusline.js
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.
- 1mo ago First seen · 34 lines · 35 tokens per session scan A f12f819bffaf
senior-js-dev is an agent published in the GitHub repository yusufalikync/ccs (3 stars, last pushed 6mo ago), licensed MIT. It adds 35 tokens to every session and 398 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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