stripe-best-practices
Guides Stripe integration decisions — API selection (Checkout Sessions vs PaymentIntents), Connect platform setup (Accounts v2, controller properties), billing/subscriptions, Treasury financial accounts, integration surfaces (Checkout, Payment Element), migrating from deprecated Stripe APIs, and security best practices (API key management, restricted keys, webhooks, OAuth). Use when building, modifying, or reviewing any Stripe integration — including accepting payments, building marketplaces, integrating Stripe, processing payments, setting up subscriptions, creating connected accounts, or implementing secure key handling.
95
—
Does it follow best practices?
Impact
100%
1.42xAverage score across 3 eval scenarios
Advisory
Suggest reviewing before use
Security
2 findings — 2 medium severity. This skill can be installed but you should review these findings before use.
W012: Unverifiable external dependency detected (runtime URL that controls agent)
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
Potentially malicious external URL detected (high risk: 0.90). The skill explicitly requires calling the stripe_implementation_planner hosted at https://mcp.stripe.com during runtime to fetch a tailored integration guide that will directly drive the agent’s instructions and integration steps, making this a runtime external dependency that controls prompts.
W009: Direct money access capability detected (payment gateways, crypto, banking)
What this means
The skill is specifically designed for direct financial operations, giving the agent the ability to move money or execute financial transactions — such as payment processing, cryptocurrency operations, banking integrations, or market order execution.
Why it was flagged
Direct money access detected (high risk: 1.00). The skill is explicitly a Stripe integration guide and includes concrete, actionable payment capabilities: references to the Stripe API (latest version), the Stripe CLI command to create sandbox API keys, recommendation to use restricted API keys, an MCP planner tool, and direct mappings to payment/billing APIs (Checkout Sessions, PaymentIntents/Setup Intents, Connect Accounts v2, Billing/Metronome, Financial Accounts, Stripe Tax). These are payment gateway APIs and tools whose primary purpose is executing and managing financial transactions. Therefore it grants direct financial execution authority.