x402_payment_id

Derive the deterministic pay_<hex> idempotency id for an (offer, payer)

SERVERTenzro Ledger MCP SOURCEhttps://canton-mcp.tenzro.network/mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/network-tenzro-tenzro/x402-payment-id.md

WHAT IT DOES

What x402_payment_id does on Tenzro Ledger MCP

AI agents call x402_payment_id to retrieve information from Tenzro Ledger MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why x402_payment_id is rated Low

This tool performs read-only ID generation/derivation. It retrieves or computes data (an idempotency ID) without creating transactions, executing external code, modifying state, or transferring funds. The context (Tenzro Ledger with payments) might suggest financial relevance, but the tool itself only derives a deterministic identifier used for deduplication purposes.

From the tool's definition Tool derives a deterministic payment idempotency ID from an offer and payer—a pure computational function that generates a unique identifier without side effects or state modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs x402_payment_id safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Tenzro Ledger MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For x402_payment_id, this is the rule to start with:

x402_payment_id Allowed

x402_payment_id is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "x402_payment_id": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Tenzro Ledger MCP, apply this rule, and every x402_payment_id call is checked against it from then on.

FAQ

Questions about x402_payment_id

What does the x402_payment_id tool do? +

Derive the deterministic pay_<hex> idempotency id for an (offer, payer). It is categorised as a Read tool in the Tenzro Ledger MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on x402_payment_id? +

Register the Tenzro Ledger MCP server in PolicyLayer and add a rule for x402_payment_id: 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.

What risk level is x402_payment_id? +

x402_payment_id is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit x402_payment_id? +

Yes. Add a rate_limit block to the x402_payment_id 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 x402_payment_id completely? +

Set action: deny in the PolicyLayer policy for x402_payment_id. 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 x402_payment_id? +

x402_payment_id 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.

KEEP EXPLORING

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