webpay_get_transaction_status

THE RISK

Low Risk

Why webpay_get_transaction_status needs a policy

This is a read-only query operation that retrieves the status of an existing payment transaction. It does not create charges, move funds, modify subscriptions, or perform any side effects—it only accesses transaction state information. While it operates in a financial system context, the tool itself performs no financial action.

From the tool's definition Tool name 'webpay_get_transaction_status' and description 'Get the current status of a Webpay Plus transaction by token' indicates a query operation that retrieves transaction status information without modifying or committing financial transactions.

Documented attack patterns abuse exactly the kind of access webpay_get_transaction_status gives an agent:

POLICY

How to control webpay_get_transaction_status

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for webpay_get_transaction_status:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "webpay_get_transaction_status": {}
  }
}

webpay_get_transaction_status is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Mcp Ap2 — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

Related tools and policies

More Mcp Ap2 tools

Financial authorize_transaction Authorize a transaction (reserve funds without capturing) via Braintree GraphQL authorizeP Financial block_card Block a card temporarily (reversible). Use for lost-card or fraud-suspected flows. Card st Financial cancel_bill Cancel a pending bill Financial cancel_collection Cancel a scheduled collection request Financial cancel_credit Cancel an authorized-but-uncaptured credit payment. Financial cancel_debit Cancel a debit-card payment by Getnet payment_id. Financial cancel_invoice Cancel/void an authorized invoice (FECancel — limited to certain types/conditions) Financial cancel_order Cancel an order, optionally restocking and refunding

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about webpay_get_transaction_status

What does the webpay_get_transaction_status tool do? +

Get the current status of a Webpay Plus transaction by token. It is categorised as a Read tool in the Mcp Ap2 MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on webpay_get_transaction_status? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for webpay_get_transaction_status: 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 Mcp Ap2. Nothing to install.

What risk level is webpay_get_transaction_status? +

webpay_get_transaction_status is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit webpay_get_transaction_status? +

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

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

webpay_get_transaction_status is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Ap2 tool call.

Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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