update_subscription

update an existing subscription

SERVERPayPal SOURCE@modelcontextprotocol/server-paypal

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/paypal/update-subscription.md

WHAT IT DOES

What update_subscription does on PayPal

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

RISK

Why update_subscription is rated Medium

This tool modifies an existing subscription, which is reversible (Write category). However, subscription modifications can have significant financial consequences—changing billing amounts, intervals, or terms could directly impact recurring charges.

From the tool's definition Tool name 'update_subscription' and description 'update an existing subscription' indicate modification of existing financial subscription data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_subscription safely

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

update_subscription Rate-limited

update_subscription 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_subscription": {
      "limits": [
        {
          "counter": "update_subscription_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about update_subscription

What does the update_subscription tool do? +

update an existing subscription. It is categorised as a Write tool in the PayPal 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_subscription? +

Register the PayPal MCP server in PolicyLayer and add a rule for update_subscription: 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 PayPal. Nothing to install.

What risk level is update_subscription? +

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

Can I rate-limit update_subscription? +

Yes. Add a rate_limit block to the update_subscription 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_subscription completely? +

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

update_subscription is provided by the PayPal MCP server (@modelcontextprotocol/server-paypal). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on PayPal, and thousands of servers like it.

This server

All 30 PayPal tools →

Across the catalogue

aiva_subscription_actions on AIVA MCP Server →aroflo_create_or_update_record on AroFlo MCP →team_manager_update_budget on Team Manager MCP → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →