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 TheSylvester/agentic-coding-tools --skill claude-agentgit clone --depth 1 https://github.com/TheSylvester/agentic-coding-toolsWrote 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/thesylvester/agentic-coding-tools/claude-agent)<a href="https://agentmods.dev/skills/thesylvester/agentic-coding-tools/claude-agent"><img src="https://agentmods.dev/badge/skills/thesylvester/agentic-coding-tools/claude-agent/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/thesylvester/agentic-coding-tools/claude-agent"><img src="https://agentmods.dev/badge/skills/thesylvester/agentic-coding-tools/claude-agent.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 | $0.00086 | $0.02144 |
| Opus 5.5 | $0.00034 | $0.00858 |
| Sonnet 5.5 | $0.00017 | $0.00429 |
| Haiku 4.5 | $0.00009 | $0.00214 |
Grade A, and why
claude-agent 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 2mo 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 — 201 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Agent (wrapper)
This runs an autonomous agent with permission prompts disabled. The default permission mode is
bypassPermissions, because a non-interactive run has no one to answer a prompt. The child agent can read, write and execute in whatever directory you launch it from. Only give it briefs you would be willing to run yourself, and setCLAUDE_PERMISSION_MODEif you want something stricter.
Execution
Works in both foreground and background:
# Foreground (blocks until done - use a long timeout, runs can take minutes)
Bash(command: "node \"~/.claude/skills/claude-agent/scripts/claude-agent.mjs\" Your prompt here", timeout: 600000)
# Background (non-blocking - you are notified when it finishes)
Bash(command: "node \"~/.claude/skills/claude-agent/scripts/claude-agent.mjs\" Your prompt here", run_in_background: true)
Background is preferred when launching multiple agents in parallel.
Thin wrapper around claude -p (Claude Code CLI) for non-interactive use:
- Provide the prompt via arguments,
PROMPT_FILE, or stdin (briefs are byte-exact) - Model selection via
--modelorCLAUDE_MODEL - TRUE session resume via
--resume/--continueorCLAUDE_SESSION - Pre-assign a session id via
--session-idso the caller owns the handle - Opt-in live phase/liveness monitor via
--monitor/CLAUDE_MONITOR=1 - Clean reply and session id read straight out of the JSON result — no scraping
Prerequisites
- Node 18 or newer (
node --version) - Claude Code CLI:
npm install -g @anthropic-ai/claude-code
Nothing else. The wrapper is a single Node script with no dependencies, so it
does not need bash, jq, python3, uuidgen, GNU grep or GNU sort. It runs
the same on Linux, macOS, WSL, and Windows (PowerShell, cmd, or Git Bash).
Usage
# Arguments
node "~/.claude/skills/claude-agent/scripts/claude-agent.mjs" Your prompt here
# File via env var (preferred for big briefs - byte-exact off stdin)
PROMPT_FILE=task.md node "~/.claude/skills/claude-agent/scripts/claude-agent.mjs"
# Stdin
cat task.md | node "~/.claude/skills/claude-agent/scripts/claude-agent.mjs"
What ships with it
2 files 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.
- 2mo ago First seen · 201 lines · 86 tokens per session scan A e284e725c9ad
claude-agent is a skill published in the GitHub repository TheSylvester/agentic-coding-tools (5 stars, last pushed 2mo ago), licensed MIT. It adds 86 tokens to every session and 2,144 once invoked, about $0.0003 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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