pay_tab_close

Close a tab and settle funds. Either party can close unilaterally.\n\n

SERVERPay Mcp SOURCE@pay-skill/mcp

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-pay-skill-pay-mcp/pay-tab-close.md

WHAT IT DOES

What pay_tab_close does on Pay Mcp

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

RISK

Why pay_tab_close is rated Critical

This tool settles financial obligations by closing a payment tab and transferring funds. Misuse by an AI agent could result in unauthorized transfer of cryptocurrency assets, causing direct financial loss. The ability for either party to unilaterally close and settle funds represents a critical financial risk if the agent is compromised or given misaligned incentives.

From the tool's definition Tool operates on USDC payments and tabs. 'Close a tab and settle funds' indicates transfer of cryptocurrency. Server description explicitly states 'USDC payments for AI agents on Base' confirming financial nature.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pay_tab_close safely

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

pay_tab_close Approval-gated

Any call to pay_tab_close 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": {
    "pay_tab_close": {
      "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 Pay Mcp, apply this rule, and every pay_tab_close call is checked against it from then on.

FAQ

Questions about pay_tab_close

What does the pay_tab_close tool do? +

Close a tab and settle funds. Either party can close unilaterally.\n\n. It is categorised as a Financial tool in the Pay Mcp MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on pay_tab_close? +

Register the Pay MCP server in PolicyLayer and add a rule for pay_tab_close: 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 Pay Mcp. Nothing to install.

What risk level is pay_tab_close? +

pay_tab_close 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 pay_tab_close? +

Yes. Add a rate_limit block to the pay_tab_close 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 pay_tab_close completely? +

Set action: deny in the PolicyLayer policy for pay_tab_close. 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 pay_tab_close? +

pay_tab_close is provided by the Pay MCP server (@pay-skill/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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Guides

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