SAP MCP Server

Deposit SAP Escrow V2

sap_deposit_escrow_v2

Local-signer-only direct deposit into a V2 escrow. Hosted users should call sap_escrow_build_deposit_transaction and finalize locally. 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: hosted accountless write is blocked; do not call this as a paid hosted write and no x402 payment should be charged. Use the local sap_payments bridge or a hosted unsigned builder when user signing is required. Signer boundary: user-controlled local profile or external signer; OOBE hosted MCP remains non-custodial.

Input Schema

TableJSON Schema

Name	Required	Description
`nonce`	No	Escrow nonce (as a decimal string, default: 0)
`amount`	No	Deposit amount 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.
`agentWallet`	No	Agent wallet public key (base58)

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.

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedJul 24, 2026

addedInput schema / description

Added value: +"Deposit SAP Escrow V2 input schema. Intent: SAP MCP tool workflow. Pricing: paid value-action; preview cost and transaction effects before user confirmation. Routing: hosted accountless write is blocked; do not call this as a paid hosted write and no x402 payment should be charged. Use the local sap_payments bridge or a hosted unsigned builder when user signing is required. Signer boundary: user-controlled local profile or external signer; OOBE hosted MCP remains non-custodial. Use exact field names from this schema; do not guess aliases or include private key material."

Changed1 schema field changedJul 17, 2026

changedInput schema / properties / amount / description

Previous value: -"Deposit amount in lamports (as a decimal string)"New value: +"Deposit amount 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."

First observedJul 13, 2026

TDQS

A4.5/5.0

Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Adds significant context beyond annotations: explains local-signer requirement, that hosted accountless write is blocked, pricing model (paid, preview before confirmation), signer boundary (user-controlled local profile), and non-custodial nature. No contradiction with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Purpose is front-loaded in first sentence. The rest is organized into sections (SAP MCP context, execution guidance). Some redundancy (e.g., 'Intent: SAP MCP tool workflow' appears twice) and generic guidance that is not tool-specific, but overall efficient given the complexity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers all critical aspects: purpose, alternatives, prerequisites, pricing, routing, signer requirements. Output schema exists so return values are covered. Could mention what deposit does to escrow state, but given sibling tools and overall context, it is sufficient.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Input schema has 100% coverage with descriptions for each parameter. Description does not add extra detail about individual parameters (nonce, amount, agentWallet) beyond what schema provides, so baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description states 'Local-signer-only direct deposit into a V2 escrow', clearly identifying the verb (deposit), resource (V2 escrow), and constraint (local-signer-only). It distinguishes from sibling sap_escrow_build_deposit_transaction by specifying that hosted users should use that alternative.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly tells when to use ('Local-signer-only') and when not to (hosted users should use sap_escrow_build_deposit_transaction). Also provides prerequisites like 'estimate or fetch state before creating escrows' and 'write operations require enabled signer mode and MCP policy approval'.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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