27 tools. 12 can modify or destroy data without limits.
4 destructive tools with no built-in limits. Policy required.
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Financial operations (create_payment_link, create_refund, finalize_invoice) can move real money. An agent caught in a loop could drain accounts before anyone notices.
Destructive tools (cancel_subscription) permanently delete resources. There is no undo. An agent calling these in a retry loop causes irreversible damage.
Write operations (create_coupon, create_customer, create_invoice) modify state. Without rate limits, an agent can make hundreds of changes in seconds — faster than any human can review or revert.
Intercept sits between your agent and Stripe. Every tool call checked against your policy before it executes — so your agent can do its job without breaking things.
npx -y @policylayer/intercept scan -- npx -y @stripe/agent-toolkit create_payment_link:
rules:
- action: deny Financial tools should be explicitly enabled per use case, not open by default.
cancel_subscription:
rules:
- action: deny Destructive tools should never be available to autonomous agents without human approval.
create_coupon:
rules:
- rate_limit: 30/hour Prevents bulk unintended modifications from agents caught in loops.
fetch_stripe_resources:
rules:
- rate_limit: 60/minute Controls API costs and prevents retry loops from exhausting upstream rate limits.
Yes. The Stripe server exposes 3 financial tools including create_payment_link, create_refund, finalize_invoice. Without a policy, an autonomous agent can call these with no spend caps, no rate limits, and no approval flow. Intercept lets you block financial tools by default or set per-tool rate limits.
Yes. The Stripe server exposes 1 destructive tools including cancel_subscription. These permanently remove resources with no undo. Intercept blocks destructive tools by default so they never reach the upstream server.
The Stripe server has 8 write tools including create_coupon, create_customer, create_invoice. Set rate limits in your policy file -- for example, rate_limit: 10/hour prevents an agent from making more than 10 modifications per hour. Intercept enforces this at the transport layer.
27 tools across 4 categories: Destructive, Financial, Read, Write. 15 are read-only. 12 can modify, create, or delete data.
One line change. Instead of running the Stripe server directly, prefix it with Intercept: intercept -c stripe.yaml -- npx -y @@stripe/agent-toolkit. Download a pre-built policy from policylayer.com/policies/stripe and adjust the limits to match your use case.
Starter policies available for each. Same risk classification, same one-command setup.
Set budgets, approvals, and hard limits across MCP servers.
npx -y @policylayer/intercept init