Pre-pay the Axelar Gas Service for a previously-dispatched message.
AI agents use axelar_pay_gas to commit financial operations through Tenzro Ledger MCP — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool moves or commits financial resources (cryptocurrency gas fees) on behalf of the user. Even though it's pre-payment for a service rather than direct value transfer, it represents a binding financial commitment that cannot be casually reversed. The high severity reflects that misuse by an AI agent could result in unintended gas fee payments, particularly if called repeatedly or for high-value messages.
From the tool's definition Tool name 'axelar_pay_gas' combined with description 'Pre-pay the Axelar Gas Service' indicates commitment of funds to pay gas fees. The Tenzro Ledger server context (wallet, payments, staking) confirms this is a financial operation.
Attacks that exploit this kind of access
Pre-pay the Axelar Gas Service for a previously-dispatched message. It is categorised as a Financial tool in the Tenzro Ledger MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Tenzro Ledger MCP server in PolicyLayer and add a rule for axelar_pay_gas: 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 Tenzro Ledger MCP. Nothing to install.
axelar_pay_gas is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the axelar_pay_gas 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.
Set action: deny in the PolicyLayer policy for axelar_pay_gas. 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.
axelar_pay_gas is provided by the Tenzro Ledger MCP server (https://canton-mcp.tenzro.network/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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