express

express is a skill for Claude Code, Codex from andyrids/icm-spec. It costs 27 tokens per session (262 once invoked), scanned A, original, Apache-2.0.

A guided process for making a small software change when no specification files need to change. It reads the project's instructions, checks whether the change qualifies, and ends at a review step where you approve the plan and results.

In plain words
What is it for?
Use it for eligible minor changes, such as a focused code adjustment, when the existing specifications remain correct and the change can be reviewed in one cycle.
Why use it?
It keeps small changes lightweight while preventing the process from silently changing formal specifications or skipping required checks.

Skill for Claude CodeCodex

Part of the icm plugin — 8 skills, 1 agent, 5 hooks shipped together

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/andyrids/icm-spec/express
Any agent
npx skills add andyrids/icm-spec --skill express
Clone the repo
git clone --depth 1 https://github.com/andyrids/icm-spec

Made for: Claude Code, Codex.

Or install icm, the plugin that ships this one along with the rest of its 8 skills, 1 agent, 5 hooks.

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 express

README.md
[![agentmods](https://agentmods.dev/badge/skills/andyrids/icm-spec/express.svg)](https://agentmods.dev/skills/andyrids/icm-spec/express)
Your own site
<a href="https://agentmods.dev/skills/andyrids/icm-spec/express"><img src="https://agentmods.dev/badge/skills/andyrids/icm-spec/express.svg" alt="Measured on agentmods" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 262 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 $0.00027 $0.00262
Opus 5 $0.00014 $0.00131
Sonnet 5 $0.00005 $0.00052
Haiku 4.5 $0.00003 $0.00026

Measured 4d ago against content hash 726289f74a3e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

express 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.

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/express/SKILL.md · 24 lines

What it actually says

ICM express-change

The argument is the change request. If it is empty, ask for one before doing anything else.

  1. Read CONTEXT.md at the repository root, then ICM/express-change/CONTEXT.md, then ICM/express-change/stages/01-change/CONTEXT.md. If any of these is missing, stop and suggest /icm:init.
  2. Test eligibility before writing anything, and state the verdict with its reason in the visible response. If the work needs a specs/** change, stop and hand off to /icm:specify. Do not amend a spec here - that is the one thing this pipeline exists not to do.
  3. Execute the stage contract exactly as written - it defines the inputs, process and outputs.
  4. Stop at the single review gate: present the plan, the diff and the test result for explicit user acceptance. The run ends there; the frozen plan is the durable record.

$ARGUMENTS

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 · 24 lines · 27 tokens per session scan A 726289f74a3e

Subscribe to this mod's changes

express is a skill published in the GitHub repository andyrids/icm-spec (2 stars, last pushed 15d ago), licensed Apache-2.0. It adds 27 tokens to every session and 262 once invoked, about $0.0001 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.

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