deleteTransactionsTransactionIdRelationshipsTags

THE RISK

Critical Risk

Why deleteTransactionsTransactionIdRelationshipsTags needs a policy

This tool removes tags from transactions, which is a destructive operation as it irreversibly deletes tag associations. Despite the server being described as 'read-only mode', this tool clearly performs a deletion operation. The severity is medium since it only removes metadata tags rather than financial data itself, but the action cannot be undone.

From the tool's definition Tool name: 'deleteTransactionsTransactionIdRelationshipsTags', description: 'Remove tags from transaction'

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

POLICY

How to control deleteTransactionsTransactionIdRelationshipsTags

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

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "deleteTransactionsTransactionIdRelationshipsTags"
  ]
}

deleteTransactionsTransactionIdRelationshipsTags disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

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

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Mcp Upbank tools

Write patchTransactionsTransactionIdRelationshipsCategory Categorize transaction Write postTransactionsTransactionIdRelationshipsTags Add tags to transaction Read getAccounts List accounts Read getAccountsAccountIdTransactions List transactions by account Read getAccountsId Retrieve account Read getAttachments List attachments Read getAttachmentsId Retrieve attachment Read getCategories List categories

All 13 Mcp Upbank tools →

Destructive tools on other servers

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Go deeper

Critical-risk tools in Mcp Upbank → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about deleteTransactionsTransactionIdRelationshipsTags

What does the deleteTransactionsTransactionIdRelationshipsTags tool do? +

Remove tags from transaction. It is categorised as a Destructive tool in the Mcp Upbank MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on deleteTransactionsTransactionIdRelationshipsTags? +

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

What risk level is deleteTransactionsTransactionIdRelationshipsTags? +

deleteTransactionsTransactionIdRelationshipsTags is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit deleteTransactionsTransactionIdRelationshipsTags? +

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

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

deleteTransactionsTransactionIdRelationshipsTags is provided by the Mcp Upbank MCP server (sirmews/mcp-upbank). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Upbank tool call.

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

CHECK YOUR STACK →