update_payment_link · Payoza MCP Server MCP: Risk & Policy

WHAT IT DOES

What update_payment_link does on Payoza MCP Server

AI agents use update_payment_link to create or update resources in Payoza MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Payoza MCP Server environment.

WHY IT NEEDS A POLICY

Why update_payment_link needs a policy

This tool modifies an existing payment link, which is a reversible write operation. It can affect payment flows if misused (e.g., changing amounts or destinations), but does not delete data or directly move funds, making it a Write with medium severity.

From the tool's definition Update an existing payment link by ID. Only provided fields are updated.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_payment_link Rate-limited

update_payment_link stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_payment_link": {
      "limits": [
        {
          "counter": "update_payment_link_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Payoza MCP Server, so you can run agents against it safely.

FAQ

Questions about update_payment_link

What does the update_payment_link tool do? +

Update an existing payment link by ID. Only provided fields are updated. It is categorised as a Write tool in the Payoza MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_payment_link? +

Register the Payoza MCP Server MCP server in PolicyLayer and add a rule for update_payment_link: 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 Payoza MCP Server. Nothing to install.

What risk level is update_payment_link? +

update_payment_link is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_payment_link? +

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

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

update_payment_link is provided by the Payoza MCP Server MCP server (payoza/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.