verify_payment

Verify a payment credential against a challenge and settle on-chain.

SERVERTenzro Ledger MCP SOURCEhttps://canton-mcp.tenzro.network/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/network-tenzro-tenzro/verify-payment.md

WHAT IT DOES

What verify_payment does on Tenzro Ledger MCP

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

RISK

Why verify_payment is rated Critical

This tool settles transactions on-chain, which constitutes a financial operation with irreversible blockchain finality. Misuse could result in unintended on-chain settlement of funds, making it both Financial and effectively irreversible once committed to the chain.

From the tool's definition "Verify a payment credential against a challenge and settle on-chain"

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs verify_payment safely

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

verify_payment Approval-gated

Any call to verify_payment 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": {
    "verify_payment": {
      "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 Tenzro Ledger MCP, apply this rule, and every verify_payment call is checked against it from then on.

FAQ

Questions about verify_payment

What does the verify_payment tool do? +

Verify a payment credential against a challenge and settle on-chain. It is categorised as a Financial tool in the Tenzro Ledger MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on verify_payment? +

Register the Tenzro Ledger MCP server in PolicyLayer and add a rule for verify_payment: 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 Tenzro Ledger MCP. Nothing to install.

What risk level is verify_payment? +

verify_payment 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 verify_payment? +

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

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

verify_payment is provided by the Tenzro Ledger MCP server (https://canton-mcp.tenzro.network/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Tenzro Ledger, and thousands of servers like it.

This server

All 360 Tenzro Ledger tools → Critical-risk tools on this server →

Across the catalogue

request_x402_payment on Pop Pay →create_payment on Shopmonkey MCP Server →invoice_issued_cash_payment on AbraFlexi → All critical-risk MCP tools → The MCP Attack Database →

Guides

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