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subscription-plan-changes

subscription-plan-changes is a skill for Claude Code, Codex from appeeky/stripe-skills. It costs 50 tokens per session (330 once invoked), scanned A, original, MIT.

An analysis of Stripe subscription changes, such as moving customers to higher or lower-priced plans. Proration is the adjustment that charges or credits a customer for part of a billing period after a plan changes.

In plain words
What is it for?
Use it to review upgrades, downgrades, migrations between plans, checkout update code, proration settings, and recent subscription changes.
Why use it?
It reveals whether plan changes update the existing subscription correctly or accidentally create duplicate subscriptions, and whether the resulting charges are correct.

Skill for Claude CodeCodex

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

not rated 5repo 3mo ago A scan 50 tokens original MIT

Good fit Use it to review upgrades, downgrades, migrations between plans, checkout update code, proration settings, and recent subscription changes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/appeeky/stripe-skills/subscription-plan-changes
View source ↗ appeeky/stripe-skills appeeky.com
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 appeeky/stripe-skills --skill subscription-plan-changes
Clone the repo
git clone --depth 1 https://github.com/appeeky/stripe-skills

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 subscription-plan-changes

README.md
[![agentmods](https://agentmods.dev/badge/skills/appeeky/stripe-skills/subscription-plan-changes/github.svg)](https://agentmods.dev/skills/appeeky/stripe-skills/subscription-plan-changes)
Your own site
<a href="https://agentmods.dev/skills/appeeky/stripe-skills/subscription-plan-changes"><img src="https://agentmods.dev/badge/skills/appeeky/stripe-skills/subscription-plan-changes/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 subscription-plan-changes

Your own site · 80×15
<a href="https://agentmods.dev/skills/appeeky/stripe-skills/subscription-plan-changes"><img src="https://agentmods.dev/badge/skills/appeeky/stripe-skills/subscription-plan-changes.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 330 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 $0.00050 $0.00330
Opus 5.5 $0.00020 $0.00132
Sonnet 5.5 $0.00010 $0.00066
Haiku 4.5 $0.00005 $0.00033

Measured 2mo ago against content hash 17c0b048de8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

subscription-plan-changes 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/subscription-plan-changes/SKILL.md · 44 lines

What it actually says

Subscription Plan Changes

Stripe MCP Setup

Requires Stripe MCP connected via OAuth or restricted key. Docs: https://docs.stripe.com/mcp

  1. GetMcpTools with server: "user-Stripe" (or plugin-stripe-stripe) before any call
  2. Prefer stripe_api_search → stripe_api_details → stripe_api_read for list/retrieve
  3. Always paginate — limit: 100, follow has_more with starting_after
  4. Amounts are in cents unless noted
  5. Never expose secret keys in output

Workflow

  1. Review codebase checkout update path (subscriptions.update vs new checkout)
  2. Sample recent customer.subscription.updated — compare items price changes
  3. Check proration: proration_behavior, invoice line items for proration

Anti-Patterns

  • Creating new subscription instead of updating → double billing
  • No alreadyOnPlan guard

Output Template

Plan Change Audit

Update method: in-place / new checkout
Proration: [behavior]

Recent migrations (sample):
| Customer | From → To | Proration $ |

Recommendations: ...
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 · 44 lines · 50 tokens per session scan A 17c0b048de8d

Subscribe to this mod's changes

subscription-plan-changes is a skill published in the GitHub repository appeeky/stripe-skills (5 stars, last pushed 3mo ago), licensed MIT. It adds 50 tokens to every session and 330 once invoked, about $0.0002 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.

E-commerceFinance and fintechskillsstripestripe-skills
Related

subscription-plan-changes compared with skills from other repositories

subscription-plan-changes next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
subscription-plan-changesappeeky/stripe-skillsSkill53mo agoMITA50Claude Code, Codex
agent-spending-mandatemohitagw15856/pm-claude-skillsSkill1.5kyesterdayMITA113Claude Code
saas-billingroedyrustam/vibes-plugSkill121yesterdayMITA36Cursor
payment-gateway-expertroedyrustam/vibes-plugSkill121yesterdayMITA34Cursor
marketplace-purchase-vettingAtlasOmnia/donna-starterSkill13811d agoMITA72Claude Code, Codex
stripe-integrationfinsilabs/awesome-ecommerce-skillsSkill6315d agoMITA29Claude Code, Codex
doku-mcp-serverroedyrustam/vibes-plugSkill121yesterdayMITB40Cursor