acpx

A command-line tool for running coding agents without a visible interface and letting them communicate with one another. ACP is a protocol for agent-to-agent communication.

In plain words
What is it for?
Use it to run pi, Qwen, Codex, Claude, or Gemini headlessly, manage persistent sessions, orchestrate agents, and consume their output in scripts.
Why use it?
It helps scripts coordinate agents, keep sessions running, queue instructions, and handle structured results.

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/dwsy/agent/acpx
Any agent
npx skills add Dwsy/agent --skill acpx
Clone the repo
git clone --depth 1 https://github.com/Dwsy/agent

Made for: Claude Code, Codex.

Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,771 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00082 $0.01771
Opus 5 $0.00041 $0.00886
Sonnet 5 $0.00016 $0.00354
Haiku 4.5 $0.00008 $0.00177

Measured 2d ago against content hash 3c50991fd98d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

acpx 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 2d 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.

skills/acpx/SKILL.md · 206 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago First seen · 206 lines · 82 tokens per session scan A 3c50991fd98d

Subscribe to this mod's changes

acpx is a skill published in the GitHub repository Dwsy/agent (22 stars, last pushed 14d ago), with no licence file. It adds 82 tokens to every session and 1,771 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 2026-08-30.

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