shipping-and-launch

shipping-and-launch is a skill for Claude Code, Codex from JunMystery/Agent-Guidance-Python. It costs 45 tokens per session (2,294 once invoked), scanned A, a copy of shipping-and-launch, MIT.

A production-launch workflow covering checks, monitoring, staged rollout, and rollback planning. A rollback plan explains how to return to the previous version if a release causes problems.

In plain words
What is it for?
It helps prepare deployment checklists, monitoring, incremental releases, and recovery plans for features, data migrations, infrastructure changes, and betas.
Why use it?
It helps teams catch launch risks and prepare for failures before users are affected.

Skill for Claude CodeCodex

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

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/junmystery/agent-guidance-python/shipping-and-launch
Any agent
npx skills add JunMystery/Agent-Guidance-Python --skill shipping-and-launch
Clone the repo
git clone --depth 1 https://github.com/JunMystery/Agent-Guidance-Python

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 shipping-and-launch

README.md
[![agentmods](https://agentmods.dev/badge/skills/junmystery/agent-guidance-python/shipping-and-launch.svg)](https://agentmods.dev/skills/junmystery/agent-guidance-python/shipping-and-launch)
Your own site
<a href="https://agentmods.dev/skills/junmystery/agent-guidance-python/shipping-and-launch"><img src="https://agentmods.dev/badge/skills/junmystery/agent-guidance-python/shipping-and-launch.svg" alt="Measured on agentmods" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,294 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 83% copy Near-identical to another mod 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 $0.00045 $0.02294
Opus 5 $0.00023 $0.01147
Sonnet 5 $0.00009 $0.00459
Haiku 4.5 $0.00005 $0.00229

Measured 2d ago against content hash 3e54575e5dcd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

shipping-and-launch 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.

Origin

This is a copy

83% identical to shipping-and-launch — 9 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/shipping-and-launch/SKILL.md · 310 lines

How it starts

The opening of the file, as written. The whole thing — 310 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Shipping and Launch

Overview

Ship with confidence. The goal is not just to deploy — it's to deploy safely, with monitoring in place, a rollback plan ready, and a clear understanding of what success looks like. Every launch should be reversible, observable, and incremental.

When to Use

  • Deploying a feature to production for the first time
  • Releasing a significant change to users
  • Migrating data or infrastructure
  • Opening a beta or early access program
  • Any deployment that carries risk (all of them)

The Pre-Launch Checklist

Code Quality

  • All tests pass (unit, integration, e2e)
  • Build succeeds with no warnings
  • Lint and type checking pass
  • Code reviewed and approved
  • No TODO comments that should be resolved before launch
  • No console.log debugging statements in production code
  • Error handling covers expected failure modes

Security

  • No secrets in code or version control
  • npm audit shows no critical or high vulnerabilities
  • Input validation on all user-facing endpoints
  • Authentication and authorization checks in place
  • Security headers configured (CSP, HSTS, etc.)
  • Rate limiting on authentication endpoints
  • CORS configured to specific origins (not wildcard)

Performance

  • Core Web Vitals within "Good" thresholds
  • No N+1 queries in critical paths
  • Images optimized (compression, responsive sizes, lazy loading)
  • Bundle size within budget
  • Database queries have appropriate indexes
  • Caching configured for static assets and repeated queries

Accessibility

  • Keyboard navigation works for all interactive elements
  • Screen reader can convey page content and structure
  • Color contrast meets WCAG 2.1 AA (4.5:1 for text)
  • Focus management correct for modals and dynamic content
  • Error messages are descriptive and associated with form fields
  • No accessibility warnings in axe-core or Lighthouse

Infrastructure

  • Environment variables set in production
  • Database migrations applied (or ready to apply)
  • DNS and SSL configured
  • CDN configured for static assets
  • Logging and error reporting configured
  • Health check endpoint exists and responds

Read the full file on GitHub · 310 lines

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 · 310 lines · 45 tokens per session scan A 3e54575e5dcd

Subscribe to this mod's changes

shipping-and-launch is a skill published in the GitHub repository JunMystery/Agent-Guidance-Python (2 stars, last pushed 1mo ago), licensed MIT. It adds 45 tokens to every session and 2,294 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 83% identical to shipping-and-launch, differing in 9 lines, and is treated as a copy.

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