refund_stripe_charge

Refund a Stripe charge (ch_… or a pi_… payment intent): the full refundable amount, or a partial

SERVERHermoso SOURCEhttps://app.hermoso.ai/mcp

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/hermoso/refund-stripe-charge.md

WHAT IT DOES

What refund_stripe_charge does on Hermoso

AI agents use refund_stripe_charge to commit financial operations through Hermoso, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why refund_stripe_charge is rated Critical

refund_stripe_charge moves real money, and an autonomous agent will call it with the same confidence it calls a search tool. A misread instruction or an injected prompt is all it takes to drain an account or blow a budget.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs refund_stripe_charge safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Hermoso, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For refund_stripe_charge, this is the rule to start with:

refund_stripe_charge Approval-gated

Any call to refund_stripe_charge is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "refund_stripe_charge": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Hermoso, apply this rule, and every refund_stripe_charge call is checked against it from then on.

FAQ

Questions about refund_stripe_charge

What does the refund_stripe_charge tool do? +

Refund a Stripe charge (ch_… or a pi_… payment intent): the full refundable amount, or a partial. It is categorised as a Financial tool in the Hermoso MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on refund_stripe_charge? +

Register the Hermoso MCP server in PolicyLayer and add a rule for refund_stripe_charge: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Hermoso. Nothing to install.

What risk level is refund_stripe_charge? +

refund_stripe_charge is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit refund_stripe_charge? +

Yes. Add a rate_limit block to the refund_stripe_charge rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block refund_stripe_charge completely? +

Set action: deny in the PolicyLayer policy for refund_stripe_charge. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides refund_stripe_charge? +

refund_stripe_charge is provided by the Hermoso MCP server (https://app.hermoso.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Hermoso, and thousands of servers like it.

This server

All 896 Hermoso tools → Critical-risk tools on this server →

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All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →