sap_x402_settle
Settle served x402 calls through SDK X402Registry.settle. Must be called by the agent owner wallet. SAP MCP context: Payment and settlement flow. Estimate or fetch state before creating escrows or settling calls; write operations require an enabled signer mode and MCP policy approval. SAP MCP exe...
This record as markdown: /tools/oobe-protocol-labs-sap-mcp-server/sap-x402-settle.md
What sap_x402_settle does on Sap
AI agents use sap_x402_settle to commit financial operations through Sap, usually the final step of a payment, billing, or trading workflow. A call moves real money.
| Parameter | Type | Required | Description |
|---|---|---|---|
nonce | string | — | Optional escrow nonce as a decimal string. Defaults to 0. |
commitment | string | — | Optional processed|confirmed|finalized commitment |
maxRetries | number | — | Optional RPC retry limit |
serviceData | string | — | Service data to hash into the settlement proof |
computeUnits | number | — | Optional compute-unit limit |
callsToSettle | number | — | Number of calls to settle |
skipPreflight | boolean | — | Optional skip preflight flag |
depositorWallet | string | — | Depositor wallet public key (base58) |
priorityFeeMicroLamports | number | — | Optional priority fee in microlamports per compute unit |
Parameters from the server's own tool schema.
Why sap_x402_settle is rated Critical
Settles financial payment obligations via blockchain registry, directly committing funds.
From the tool's definition Settle served x402 calls through SDK X402Registry.settle; Payment and settlement flow
Attacks that exploit this kind of access
The rule that runs sap_x402_settle safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Sap, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For sap_x402_settle, this is the rule to start with:
Any call to sap_x402_settle is blocked until a human approves it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Sap, apply this rule, and every sap_x402_settle call is checked against it from then on.
Questions about sap_x402_settle
Settle served x402 calls through SDK X402Registry.settle. Must be called by the agent owner wallet. SAP MCP context: Payment and settlement flow. Estimate or fetch state before creating escrows or settling calls; write operations require an enabled signer mode and MCP policy approval. SAP MCP execution guidance: Intent: SAP MCP tool workflow. Pricing: paid value-action; preview cost and transaction effects before user confirmation. Routing: paid hosted call; call sap_estimate_tool_cost first, then use sap_payments_call_paid_tool if the runtime cannot handle x402 natively. Signer boundary: hosted reads/builders never receive keypair bytes; value-moving results must be finalized locally when signing is required. It is categorised as a Financial tool in the Sap MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
sap_x402_settle accepts 9 parameters: nonce, commitment, maxRetries, serviceData, computeUnits, callsToSettle, skipPreflight, depositorWallet, priorityFeeMicroLamports. The full parameter table on this page comes from the server's own tool schema.
Register the Sap MCP server in PolicyLayer and add a rule for sap_x402_settle: 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 Sap. Nothing to install.
sap_x402_settle 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 sap_x402_settle 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 sap_x402_settle. 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.
sap_x402_settle is provided by the Sap MCP server (https://mcp.sap.oobeprotocol.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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