What is customer-portal-setup?

A review of Stripe's customer billing portal, where customers can manage payment methods, invoices, and subscriptions themselves. It checks which self-service options are enabled.

Use it to check payment-method updates, invoice history, cancellation options, plan changes, subscription links in the code, and proration settings.

It finds missing portal settings that can make it harder for customers to fix payment problems or change or cancel plans.

customer-portal-setup — Skill for Claude Code and Codex by appeeky

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 customer-portal-setup

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/appeeky/stripe-skills/customer-portal-setup/github.svg)](https://agentmods.dev/skills/appeeky/stripe-skills/customer-portal-setup)

Your own site

<a href="https://agentmods.dev/skills/appeeky/stripe-skills/customer-portal-setup"><img src="https://agentmods.dev/badge/skills/appeeky/stripe-skills/customer-portal-setup/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/appeeky/stripe-skills/customer-portal-setup"><img src="https://agentmods.dev/badge/skills/appeeky/stripe-skills/customer-portal-setup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 341 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.

Model	Per session	Once invoked
Fable 5.1	$0.00051	$0.00341
Opus 5	$0.00026	$0.00170
Sonnet 5	$0.00010	$0.00068
Haiku 4.5	$0.00005	$0.00034

Measured 11d ago against content hash bd6b8c3d0904, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

customer-portal-setup 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 11d 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/customer-portal-setup/SKILL.md · 46 lines

What it actually says

Customer Portal Setup

Stripe MCP Setup

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

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

Workflow

GetBillingPortalConfigurations — list active configs
Verify features enabled:
- payment_method_update
- invoice_history
- subscription_cancel (with retention offers if available)
- subscription_update / proration behavior

Codebase

Search: billingPortal.sessions.create, customer_portal, Stripe Portal URL in settings.

Output Template

Customer Portal Audit

Portal enabled: yes/no
Features:
| Feature | Enabled | Recommendation |

Gap: [e.g. no payment method update → past_due recovery suffers]

Pair with past-due-dunning for recovery playbook.

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.

11d ago First seen · 46 lines · 51 tokens per session scan A bd6b8c3d0904

Subscribe to this mod's changes

customer-portal-setup is a skill published in the GitHub repository appeeky/stripe-skills (5 stars, last pushed 1mo ago), licensed MIT. It adds 51 tokens to every session and 341 once invoked, about $0.0003 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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