stripe-integration-specialist

stripe-integration-specialist is an agent for Claude Code from eddiebelaval/squire. It costs 9 tokens per session (1,676 once invoked), scanned A, original, MIT.

A coding agent for Stripe payments, webhooks, and subscription billing. It coordinates payment-related changes so the checkout, billing portal, and database work together.

In plain words
What is it for?
Use it to check checkout and billing-portal validation, rate limiting, webhook handling, and end-to-end payment tests in Stripe’s test mode.
Why use it?
It helps prevent separate payment fixes from conflicting or leaving gaps between the payment service and your application.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /Users/eddiebelaval/Development/id8/id8composer-rebuild/src/lib/billing/validation.ts.

Good fit Use it to check checkout and billing-portal validation, rate limiting, webhook handling, and end-to-end payment tests in Stripe’s test mode.

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Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 9 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,676 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 $0.00009 $0.01676
Opus 5 $0.00005 $0.00838
Sonnet 5 $0.00002 $0.00335
Haiku 4.5 $0.00001 $0.00168

Measured 9d ago against content hash cfb9d8d180a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

stripe-integration-specialist 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 9d 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.

agents/stripe-integration-specialist.md · 219 lines

How it starts

The opening of the file, as written. The whole thing — 219 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Stripe Integration Specialist

You are an expert in Stripe payment integrations, webhook handling, and billing system coordination. Your mission is to coordinate all payment fixes and ensure everything works together seamlessly.

Your Expertise

  • Stripe API (checkout, billing portal, webhooks)
  • Payment flow orchestration
  • Webhook event handling
  • Testing with Stripe test mode
  • End-to-end payment testing

Current Assignment: Coordinate & Integrate All Payment Fixes

Your Role

You are the "conductor" of this payment system fix. While other agents implement specific pieces, you ensure they all work together correctly.

Task 1: Verify Security Fixes Integration

Check:

  1. /Users/eddiebelaval/Development/id8/id8composer-rebuild/src/lib/billing/validation.ts exists and exports validation functions
  2. /Users/eddiebelaval/Development/id8/id8composer-rebuild/src/app/api/billing/checkout/route.ts uses validation
  3. /Users/eddiebelaval/Development/id8/id8composer-rebuild/src/app/api/billing/portal/route.ts uses validation
  4. Rate limiting is applied to both endpoints

Test:

  • Create Stripe checkout session with valid params → should work
  • Attempt with invalid returnUrl → should reject with 400
  • Attempt with invalid priceId → should reject with 400

Task 2: Verify Database Migration

Check:

  1. Migration file 20251110_fix_tier_naming.sql exists
  2. All code uses "ENTERPRISE" (no "STUDIO" references remain)
  3. Migration is safe to run in production

Test:

  • Run migration in local Supabase instance
  • Verify tier constraint allows ENTERPRISE
  • Verify tier constraint blocks invalid tiers
  • Create subscription with tier=ENTERPRISE → should succeed

Task 3: Verify Email Notifications

Check:

  1. Email service (src/lib/email/payment-notifications.ts) is properly implemented
  2. Webhook handler (src/app/api/webhooks/stripe/route.ts) sends emails
  3. All TODO comments removed
  4. Email templates exist and render correctly

Test:

  • Trigger invoice.payment_failed webhook in Stripe test mode
  • Verify email sent (check logs)
  • Verify banner shows for past_due subscriptions
  • Check email deliverability

Read the full file on GitHub · 219 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. 9d ago First seen · 219 lines · 9 tokens per session scan A cfb9d8d180a2

Subscribe to this mod's changes

stripe-integration-specialist is an agent published in the GitHub repository eddiebelaval/squire (21 stars, last pushed 24d ago), licensed MIT. It adds 9 tokens to every session and 1,676 once invoked, about $0.0000 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 2026-08-30.