update_charge · Omise MCP Server MCP: Risk & Policy

WHAT IT DOES

What update_charge does on Omise MCP Server

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

WHY IT NEEDS A POLICY

Why update_charge needs a policy

The tool modifies existing charge data, which is a reversible write operation. It is limited to pending charges, reducing blast radius somewhat, but modifying payment charges can have financial implications if metadata or amounts are altered.

From the tool's definition Update charge information (only for pending charges)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_charge Rate-limited

update_charge 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_charge": {
      "limits": [
        {
          "counter": "update_charge_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about update_charge

What does the update_charge tool do? +

Update charge information (only for pending charges). It is categorised as a Write tool in the Omise 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_charge? +

Register the Omise MCP Server MCP server in PolicyLayer and add a rule for update_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 Omise MCP Server. Nothing to install.

What risk level is update_charge? +

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

Can I rate-limit update_charge? +

Yes. Add a rate_limit block to the update_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 update_charge completely? +

Set action: deny in the PolicyLayer policy for update_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 update_charge? +

update_charge is provided by the Omise MCP Server MCP server (jun-omise/omise-mcp-alpha). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.