Prepare SAP x402 Payment
sap_x402_prepare_paymentPrepare an x402 payment context by setting deposit, price per call, and optional escrow nonce, expiry, and volume curve for agent wallet payments.
Instructions
Prepare an x402 payment context using SDK X402Registry.preparePayment. New production escrow funding should use Escrow V2 fields and nonce-aware flows. 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.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| nonce | No | Optional escrow nonce as a decimal string. Defaults to 0. | |
| deposit | No | Initial deposit as a decimal string. Amount in the escrow token smallest unit: lamports for SOL, micro-USDC for USDC, or base units for the configured SPL token. | |
| maxCalls | No | Optional maximum number of calls covered | |
| expiresAt | No | Optional expiry timestamp in unix seconds | |
| tokenMint | No | Optional SPL token mint; omit/null for SOL. Use EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v for mainnet USDC. | |
| agentWallet | No | Agent wallet public key (base58) | |
| volumeCurve | No | Optional array of { afterCalls, pricePerCall } pricing breakpoints | |
| pricePerCall | No | Price per call as a decimal string. Amount in the escrow token smallest unit: lamports for SOL, micro-USDC for USDC, or base units for the configured SPL token. | |
| tokenDecimals | No | Optional token decimals. Defaults to 6 for USDC/SPL flows when supplied by the SDK and 9 for native SOL. | |
| networkIdentifier | No | Optional x402 network identifier written into headers |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| content | Yes | MCP content blocks returned to the caller. | |
| isError | No | True when the tool result represents an application-level error. |