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compact-prompt-composer

compact-prompt-composer is a skill for Claude Code, Codex from lemos999/codex-active-orchestration. It costs 31 tokens per session (207 once invoked), scanned A, original, MIT.

A guide for writing compact instructions for coding agents, skills, and workflow documents. It focuses on keeping required actions, safety limits, and checks clear while removing repetition.

In plain words
What is it for?
Use it when creating or revising agent prompts, skill files, operating manuals, or other instruction-heavy text.
Why use it?
It helps make instructions shorter without hiding important requirements or uncertainty.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 2repo 5mo ago A scan 31 tokens original MIT

Good fit Use it when creating or revising agent prompts, skill files, operating manuals, or other instruction-heavy text.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lemos999/codex-active-orchestration/compact-prompt-composer
View source ↗ lemos999/codex-active-orchestration
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.

Any agent
npx skills add lemos999/codex-active-orchestration --skill compact-prompt-composer
Clone the repo
git clone --depth 1 https://github.com/lemos999/codex-active-orchestration

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 compact-prompt-composer

README.md
[![agentmods](https://agentmods.dev/badge/skills/lemos999/codex-active-orchestration/compact-prompt-composer/github.svg)](https://agentmods.dev/skills/lemos999/codex-active-orchestration/compact-prompt-composer)
Your own site
<a href="https://agentmods.dev/skills/lemos999/codex-active-orchestration/compact-prompt-composer"><img src="https://agentmods.dev/badge/skills/lemos999/codex-active-orchestration/compact-prompt-composer/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.

agentmods 80×15 button for compact-prompt-composer

Your own site · 80×15
<a href="https://agentmods.dev/skills/lemos999/codex-active-orchestration/compact-prompt-composer"><img src="https://agentmods.dev/badge/skills/lemos999/codex-active-orchestration/compact-prompt-composer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 207 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00031 $0.00207
Opus 5.5 $0.00012 $0.00083
Sonnet 5.5 $0.00006 $0.00041
Haiku 4.5 $0.00003 $0.00021

Measured 2mo ago against content hash 4f1926a06510, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

compact-prompt-composer 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.

skills/compact-prompt-composer/SKILL.md · 21 lines

What it actually says

Compact Prompt Composer

Write operating instructions as dense, direct prose with explicit action boundaries. Keep the always-on layer short, route detail into skills and references, and avoid repeating the same rule in several places. Preserve exact output obligations, safety boundaries, evidence requirements, and verification gates.

Prefer these transformations:

  • Replace repeated examples with one general rule plus one sharp exception.
  • Replace decorative explanation with observable behavior.
  • Replace broad warnings with concrete checks.
  • Replace long procedure blocks in the root contract with skill routing.
  • Replace raw context dumps with locators, summaries, and expansion criteria.

Do not hide uncertainty, remove evidence obligations, or compress away acceptance criteria. Compactness is successful only when another agent can execute the same behavior with less irrelevant context.

Load repo-root references/compact-prompt-composition.md for the full composition contract.

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. 2mo ago First seen · 21 lines · 31 tokens per session scan A 4f1926a06510

Subscribe to this mod's changes

compact-prompt-composer is a skill published in the GitHub repository lemos999/codex-active-orchestration (2 stars, last pushed 5mo ago), licensed MIT. It adds 31 tokens to every session and 207 once invoked, about $0.0001 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.

Building agents
Related

compact-prompt-composer compared with skills from other repositories

compact-prompt-composer next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
compact-prompt-composerlemos999/codex-active-orchestrationSkill25mo agoMITA31Claude Code, Codex
imagegenopenai/codexSkill134ktodayApache-2.0A113Codex
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79ktodayMITA200Claude Code, Codex
playwright-climicrosoft/playwrightSkill99ktodayApache-2.0A19Claude Code
systematic-debuggingobra/superpowersSkill314k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code
chat-pet-sprite-creationmicrosoft/vscodeSkill195ktodayMITA53Claude Code, Codex