DeleteV1InstancesMembersByUserId

THE RISK

Critical Risk

Why DeleteV1InstancesMembersByUserId needs a policy

This tool irreversibly removes member records from an instance in a payment infrastructure system. Deletion of user/member accounts cannot be undone and represents a destructive action with significant blast radius—an errant AI agent call could eliminate legitimate member access or data. While not a direct financial transaction, the destruction of member records in a financial system warrants 'high' severity.

From the tool's definition Tool name contains 'Delete' and description states 'Delete Member from Instance'. The verb 'Delete' combined with operation on member records indicates irreversible removal of data.

Documented attack patterns abuse exactly the kind of access DeleteV1InstancesMembersByUserId gives an agent:

POLICY

How to control DeleteV1InstancesMembersByUserId

PolicyLayer is an MCP gateway — it sits between your AI agents and BlindPay MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for DeleteV1InstancesMembersByUserId:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "DeleteV1InstancesMembersByUserId"
  ]
}

DeleteV1InstancesMembersByUserId 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 BlindPay MCP Server — 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 BlindPay MCP Server tools

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All 81 BlindPay MCP Server tools →

Destructive tools on other servers

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Go deeper

Govern database agents → Read-only defaults, blocked table drops, and no DELETE without a WHERE clause on every query.
Critical-risk tools in BlindPay MCP Server → 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 →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about DeleteV1InstancesMembersByUserId

What does the DeleteV1InstancesMembersByUserId tool do? +

Delete Member from Instance. It is categorised as a Destructive tool in the BlindPay MCP Server 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 DeleteV1InstancesMembersByUserId? +

Register the BlindPay MCP Server MCP server in PolicyLayer and add a rule for DeleteV1InstancesMembersByUserId: 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 BlindPay MCP Server. Nothing to install.

What risk level is DeleteV1InstancesMembersByUserId? +

DeleteV1InstancesMembersByUserId 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 DeleteV1InstancesMembersByUserId? +

Yes. Add a rate_limit block to the DeleteV1InstancesMembersByUserId 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 DeleteV1InstancesMembersByUserId completely? +

Set action: deny in the PolicyLayer policy for DeleteV1InstancesMembersByUserId. 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 DeleteV1InstancesMembersByUserId? +

DeleteV1InstancesMembersByUserId is provided by the BlindPay MCP Server MCP server (blindpaylabs/blindpay-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every BlindPay MCP Server tool call.

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

CHECK YOUR STACK →