get_transaction_receipt

THE RISK

Low Risk

Why get_transaction_receipt needs a policy

Reading transaction receipts is a safe, informational operation. It has no side effects, cannot execute code, and does not move funds or modify blockchain state. It merely queries immutable historical blockchain data. Severity is low because misuse would only expose transaction information already public on-chain.

From the tool's definition Tool description states 'Get transaction receipt (confirmation status, gas used, logs). Use this to check if a transaction has been confirmed.' This is purely a query operation that retrieves blockchain transaction metadata without modifying state or…

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

POLICY

How to control get_transaction_receipt

PolicyLayer is an MCP gateway — it sits between your AI agents and Sperax Ecosystem Crypto & DeFI MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_transaction_receipt:

policy.json

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

get_transaction_receipt 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 Sperax Ecosystem Crypto & DeFI 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

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 get_transaction_receipt

What does the get_transaction_receipt tool do? +

Get transaction receipt (confirmation status, gas used, logs). Use this to check if a transaction has been confirmed. It is categorised as a Read tool in the Sperax Ecosystem Crypto & DeFI MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_transaction_receipt? +

Register the Sperax Ecosystem Crypto & DeFI MCP Server MCP server in PolicyLayer and add a rule for get_transaction_receipt: 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 Sperax Ecosystem Crypto & DeFI MCP Server. Nothing to install.

What risk level is get_transaction_receipt? +

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

Can I rate-limit get_transaction_receipt? +

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

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

get_transaction_receipt is provided by the Sperax Ecosystem Crypto & DeFI MCP Server MCP server (sperax/sperax-crypto-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Sperax Ecosystem Crypto & DeFI MCP Server tool call.

Start from Sperax Ecosystem Crypto & DeFI 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 →