PostV1InstancesReceiversBlockchainWallets

THE RISK

Medium Risk

Why PostV1InstancesReceiversBlockchainWallets needs a policy

This tool creates (Write) a new blockchain wallet within a payment infrastructure system. While Write operations are reversible through complementary delete operations (DeleteV1InstancesReceiversBlockchainWalletsById exists as a sibling), the creation of a blockchain wallet in a stablecoin payment system carries high severity due to the potential for financial exposure if an AI agent maliciously or erroneously…

From the tool's definition Tool name 'PostV1InstancesReceiversBlockchainWallets' with description 'Add Blockchain Wallet' indicates a POST operation that creates a new blockchain wallet resource.

Documented attack patterns abuse exactly the kind of access PostV1InstancesReceiversBlockchainWallets gives an agent:

POLICY

How to control PostV1InstancesReceiversBlockchainWallets

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 PostV1InstancesReceiversBlockchainWallets:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "PostV1InstancesReceiversBlockchainWallets": {
      "limits": [
        {
          "counter": "postv1instancesreceiversblockchainwallets_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

PostV1InstancesReceiversBlockchainWallets 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.

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.

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EXPLORE

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Go deeper

Govern customer-ops agents → PII redaction, approval on external messages, and no-bulk-delete rules on the records agents change.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
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 PostV1InstancesReceiversBlockchainWallets

What does the PostV1InstancesReceiversBlockchainWallets tool do? +

Add Blockchain Wallet. It is categorised as a Write tool in the BlindPay MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on PostV1InstancesReceiversBlockchainWallets? +

Register the BlindPay MCP Server MCP server in PolicyLayer and add a rule for PostV1InstancesReceiversBlockchainWallets: 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 PostV1InstancesReceiversBlockchainWallets? +

PostV1InstancesReceiversBlockchainWallets is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit PostV1InstancesReceiversBlockchainWallets? +

Yes. Add a rate_limit block to the PostV1InstancesReceiversBlockchainWallets 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 PostV1InstancesReceiversBlockchainWallets completely? +

Set action: deny in the PolicyLayer policy for PostV1InstancesReceiversBlockchainWallets. 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 PostV1InstancesReceiversBlockchainWallets? +

PostV1InstancesReceiversBlockchainWallets 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.

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