send_sponsored_payment

Send a TIP-20 payment with gas fees paid by a sponsor (gasless transaction).

SERVERTempo SOURCEarome3/tempo-mcp

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/arome3-tempo-mcp/send-sponsored-payment.md

WHAT IT DOES

What send_sponsored_payment does on Tempo

AI agents use send_sponsored_payment to commit financial operations through Tempo, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why send_sponsored_payment is rated Critical

This tool executes a blockchain payment transaction, transferring stablecoin value on the Tempo blockchain. It directly moves financial assets between parties, which qualifies as Financial — the highest severity category. The 'gasless' aspect means an AI agent could trigger real-world payments without even needing gas funds, lowering the barrier to misuse.

From the tool's definition Send a TIP-20 payment with gas fees paid by a sponsor (gasless transaction)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs send_sponsored_payment safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Tempo, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For send_sponsored_payment, this is the rule to start with:

send_sponsored_payment Approval-gated

Any call to send_sponsored_payment is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "send_sponsored_payment": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Tempo, apply this rule, and every send_sponsored_payment call is checked against it from then on.

FAQ

Questions about send_sponsored_payment

What does the send_sponsored_payment tool do? +

Send a TIP-20 payment with gas fees paid by a sponsor (gasless transaction). It is categorised as a Financial tool in the Tempo MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on send_sponsored_payment? +

Register the Tempo MCP server in PolicyLayer and add a rule for send_sponsored_payment: 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 Tempo. Nothing to install.

What risk level is send_sponsored_payment? +

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

Can I rate-limit send_sponsored_payment? +

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

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

send_sponsored_payment is provided by the Tempo MCP server (arome3/tempo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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Guides

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