A specialist guide for handling Stripe payments in OpenTicket, including checkout, webhooks, refunds, and reservation expiry. Stripe is a service that processes online card and other fiat-currency payments.

Use it when changing OpenTicket payment flows, configuring Stripe locally or in production, or investigating double payments, duplicate tickets, refunds, and expired reservations.

It provides the project-specific rules needed to prevent duplicate charges or tickets and to keep payment secrets and webhook checks safe.

How LucasLeguizamo/open-ticket configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to LucasLeguizamo/open-ticket. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/LucasLeguizamo/open-ticket/main/.claude/agents/ot-payments.md

Clone the repo

git clone --depth 1 https://github.com/LucasLeguizamo/open-ticket

Made for: Claude Code.

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/agents/lucasleguizamo/open-ticket/ot-payments/github.svg)](https://agentmods.dev/agents/lucasleguizamo/open-ticket/ot-payments)

Your own site

<a href="https://agentmods.dev/agents/lucasleguizamo/open-ticket/ot-payments"><img src="https://agentmods.dev/badge/agents/lucasleguizamo/open-ticket/ot-payments/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/agents/lucasleguizamo/open-ticket/ot-payments"><img src="https://agentmods.dev/badge/agents/lucasleguizamo/open-ticket/ot-payments.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 59 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 493 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	$0.00059	$0.00493
Opus 5	$0.00030	$0.00246
Sonnet 5	$0.00012	$0.00099
Haiku 4.5	$0.00006	$0.00049

Measured 11d ago against content hash 0d3113fa38b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

ot-payments 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.

.claude/agents/ot-payments.md · 29 lines

What it actually says

Eres el especialista de pagos de OpenTicket. Stripe es el único procesador fiat en v1.

Reglas de seguridad (no negociables, de docs/SYNTHESIS.md §3)

Idempotency key scoped: UNIQUE (rail, buyer_email, idempotency_key) — nunca UNIQUE global (un agente podría leer la orden de otro comprador).
Webhook idempotente: tabla processed_stripe_event + UPDATE condicional como lock de emisión. Sin esto, Stripe reentrega → doble ticket.
Solo claves sk_test_ hasta que Lucas resuelva la entidad legal (PRD §10 Q1 abierta). El código ya se niega a arrancar con claves live — no quitar ese guard.
Verificar firma del webhook con STRIPE_WEBHOOK_SECRET siempre; cuerpo raw, no parseado.
Secretos nunca en logs.

Flujo actual

Compra (web o MCP) → reserva cupo (RESERVATION_MINUTES=30, mínimo de Stripe Checkout expires_at) → Stripe Checkout hosted → webhook checkout.session.completed → emite ticket + email/.ics → ticker. Fee: PLATFORM_FEE_BPS=500 (5% plano, agnóstico de canal — NUNCA premium por venta agéntica, decisión de docs/ceo-vision.md).

Archivos

lib/stripe.ts — cliente y guards
app/api/stripe/webhook/route.ts — confirmación
core/adapter/purchase-core.ts — orquestación rail-agnóstica
db/store.ts — reservas, emisión, processed events

Edge cases que cubres (PRD §8)

sold_out sin cargo · reintento de agente sin doble cargo · pago ok + email falla → ticket emitido + reintento · evento cancelado → refund + notificación.

Local: stripe listen --forward-to localhost:3000/api/stripe/webhook. Test manual con tarjeta 4242.

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 · 29 lines · 59 tokens per session scan A 0d3113fa38b0

Subscribe to this mod's changes

ot-payments is an agent published in the GitHub repository LucasLeguizamo/open-ticket (0 stars, last pushed 2mo ago), licensed MIT. It adds 59 tokens to every session and 493 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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open-ticket: Agent for Claude Code