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 KevinZai/commander --skill acpxgit clone --depth 1 https://github.com/KevinZai/commanderWrote 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/kevinzai/commander/acpx)<a href="https://agentmods.dev/skills/kevinzai/commander/acpx"><img src="https://agentmods.dev/badge/skills/kevinzai/commander/acpx.svg" alt="Measured on agentmods" 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 | $0.00039 | $0.02772 |
| Opus 5 | $0.00019 | $0.01386 |
| Sonnet 5 | $0.00008 | $0.00554 |
| Haiku 4.5 | $0.00004 | $0.00277 |
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.
How it starts
The opening of the file, as written. The whole thing — 332 lines — stays where its author put it; the contents beside it link to each section on GitHub.
acpx
When to use this skill
Use this skill when you need to run coding agents through acpx, manage persistent ACP sessions, queue prompts, or consume structured agent output from scripts.
What acpx is
acpx is a headless, scriptable CLI client for the Agent Client Protocol (ACP). It is built for agent-to-agent communication over the command line and avoids PTY scraping.
Core capabilities:
- Persistent multi-turn sessions per repo/cwd
- One-shot execution mode (
exec) - Named parallel sessions (
-s/--session) - Queue-aware prompt submission with optional fire-and-forget (
--no-wait) - Cooperative cancel command (
cancel) for in-flight turns - Graceful cancellation via ACP
session/cancelon interrupt - Session control methods (
set-mode,set <key> <value>) - Agent reconnect/resume after dead subprocess detection
- Prompt input via stdin or
--file - Config files with global+project merge and
config show|init - Session metadata/history inspection (
sessions show,sessions history) - Local agent process checks via
status - Stable ACP client methods for filesystem and terminal requests
- Stable ACP
authenticatehandshake via env/config credentials - Structured streaming output (
text,json,quiet) - Built-in agent registry plus raw
--agentescape hatch
Install
npm i -g acpx
For normal session reuse, prefer a global install over npx.
Command model
prompt is the default verb.
acpx [global_options] [prompt_text...]
acpx [global_options] prompt [prompt_options] [prompt_text...]
acpx [global_options] exec [prompt_options] [prompt_text...]
acpx [global_options] cancel [-s <name>]
acpx [global_options] set-mode <mode> [-s <name>]
acpx [global_options] set <key> <value> [-s <name>]
acpx [global_options] status [-s <name>]
acpx [global_options] sessions [list | new [--name <name>] | close [name] | show [name] | history [name] [--limit <count>]]
acpx [global_options] config [show | init]
acpx [global_options] <agent> [prompt_options] [prompt_text...]
acpx [global_options] <agent> prompt [prompt_options] [prompt_text...]
acpx [global_options] <agent> exec [prompt_options] [prompt_text...]
acpx [global_options] <agent> cancel [-s <name>]
acpx [global_options] <agent> set-mode <mode> [-s <name>]
acpx [global_options] <agent> set <key> <value> [-s <name>]
acpx [global_options] <agent> status [-s <name>]
acpx [global_options] <agent> sessions [list | new [--name <name>] | close [name] | show [name] | history [name] [--limit <count>]]
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.
- 2d ago First seen · 332 lines · 39 tokens per session scan A 7a6e578cac6c
acpx is a skill published in the GitHub repository KevinZai/commander (6 stars, last pushed today), licensed MIT. It adds 39 tokens to every session and 2,772 once invoked, about $0.0002 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 2026-09-04.
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