sign-and-submit-transaction · Josectoscano Stellar MCP

WHAT IT DOES

What sign-and-submit-transaction does on Josectoscano Stellar

AI agents use sign-and-submit-transaction to commit financial operations through Josectoscano Stellar — usually the final step of a payment, billing, or trading workflow. A call moves real money.

WHY IT NEEDS A POLICY

Why sign-and-submit-transaction needs a policy

This tool signs and submits transactions to the Stellar blockchain network. Stellar is a financial protocol for transferring value (payments, asset exchanges, etc.). Submitting a signed transaction is an irreversible financial operation that can move funds, create trustlines, or execute smart contracts on the network. The sibling tools (create-account, fund-account) further confirm this is a financial context.

From the tool's definition Sign and submit a Soroban transaction to the Stellar network

Attacks that exploit this kind of access

Questions about sign-and-submit-transaction

What does the sign-and-submit-transaction tool do? +

Sign and submit a Soroban transaction to the Stellar network. It is categorised as a Financial tool in the Josectoscano Stellar MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on sign-and-submit-transaction? +

Register the Josectoscano Stellar MCP server in PolicyLayer and add a rule for sign-and-submit-transaction: 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 Josectoscano Stellar. Nothing to install.

What risk level is sign-and-submit-transaction? +

sign-and-submit-transaction 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 sign-and-submit-transaction? +

Yes. Add a rate_limit block to the sign-and-submit-transaction 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 sign-and-submit-transaction completely? +

Set action: deny in the PolicyLayer policy for sign-and-submit-transaction. 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 sign-and-submit-transaction? +

sign-and-submit-transaction is provided by the Josectoscano Stellar MCP server (@iflow-mcp/josectoscano-stellar-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.