update_transaction

Update a transaction - amount, expiry, or status.

SERVERZype Com SOURCEzype/zype-mcp

Medium RISK CLASS

Category Write

Parameters 41 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/com-zype-mcp-server/update-transaction.md

WHAT IT DOES

What update_transaction does on Zype Com

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

Parameter	Type	Required	Description
`amount`	string	—
`status`	string	—
`expires_at`	string	—
`transaction_id`	string	Yes	The transaction ID (required)

Parameters from the server's own tool schema.

RISK

Why update_transaction is rated Medium

An AI agent can call update_transaction faster than any human can review: one bad instruction and it creates or modifies resources in Zype Com by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_transaction safely

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

update_transaction Rate-limited

update_transaction 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_transaction": {
      "limits": [
        {
          "counter": "update_transaction_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 Zype Com, apply this rule, and every update_transaction call is checked against it from then on.

FAQ

Questions about update_transaction

What does the update_transaction tool do? +

Update a transaction - amount, expiry, or status. It is categorised as a Write tool in the Zype Com MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does update_transaction accept? +

update_transaction accepts 4 parameters: amount, status, expires_at, transaction_id. Required: transaction_id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on update_transaction? +

Register the Zype Com MCP server in PolicyLayer and add a rule for update_transaction: 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 Zype Com. Nothing to install.

What risk level is update_transaction? +

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

Can I rate-limit update_transaction? +

Yes. Add a rate_limit block to the update_transaction 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_transaction completely? +

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

update_transaction is provided by the Zype Com MCP server (zype/zype-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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