claude-agent

claude-agent is a skill for Claude Code, Codex from TheSylvester/agentic-coding-tools. It costs 86 tokens per session (2,144 once invoked), scanned A, original, MIT.

A wrapper that runs the Claude Code command-line tool as a separate, non-interactive coding agent. It can receive prompts, return replies and session IDs, resume sessions, and optionally monitor whether a run is still active.

In plain words
What is it for?
Use it to launch one or more Claude agents, pass prompts through arguments, files, or standard input, choose a model, resume work, and run tasks in the foreground or background.
Why use it?
It lets scripts or another agent delegate coding work without someone answering permission prompts during the run.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/thesylvester/agentic-coding-tools/claude-agent
Any agent
npx skills add TheSylvester/agentic-coding-tools --skill claude-agent
Clone the repo
git clone --depth 1 https://github.com/TheSylvester/agentic-coding-tools

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for claude-agent

README.md
[![agentmods](https://agentmods.dev/badge/skills/thesylvester/agentic-coding-tools/claude-agent.svg)](https://agentmods.dev/skills/thesylvester/agentic-coding-tools/claude-agent)
Your own site
<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="Measured on agentmods" height="20"></a>
Per session 86 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,144 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00086 $0.02144
Opus 5 $0.00043 $0.01072
Sonnet 5 $0.00017 $0.00429
Haiku 4.5 $0.00009 $0.00214

Measured 4d ago against content hash e284e725c9ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 4d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/claude-agent.mjs, scripts/claude-monitor.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/claude-agent/SKILL.md · 201 lines

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 set CLAUDE_PERMISSION_MODE if 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 --model or CLAUDE_MODEL
  • TRUE session resume via --resume / --continue or CLAUDE_SESSION
  • Pre-assign a session id via --session-id so 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"

Read the full file on GitHub · 201 lines

Files

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.

Changes

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.

  1. 4d ago First seen · 201 lines · 86 tokens per session scan A e284e725c9ad

Subscribe to this mod's changes

claude-agent is a skill published in the GitHub repository TheSylvester/agentic-coding-tools (5 stars, last pushed 20d ago), licensed MIT. It adds 86 tokens to every session and 2,144 once invoked, about $0.0004 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 2026-08-31.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

local-ai-agents

Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…

microsoft/ai-agents-for-beginners · 200 tokens

chronicle

Analyze Copilot session history for standup reports, usage tips, session search, and session reindexing. Use when the user asks for a standup, daily summary, usage tips, workflow recommendations, wants to search or find past sessions by keyword/file/PR, wants to reindex their session store, or asks about deleting…

microsoft/vscode · 72 tokens

imagegen

Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, or transparent-background cutouts. Use when Codex should create a brand-new image, transform an existing image, or derive visual variants from references, and the output…

openai/codex · 113 tokens

chat-pet-sprite-creation

Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.

microsoft/vscode · 53 tokens

cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…

microsoft/vscode · 71 tokens