sap_phoenix_build_deposit
Build an unsigned USDC deposit transaction into a Phoenix trader account. Returns transactionBase64 for browser approval. Requires an ACTIVATED trader: check sap_phoenix_get_trader_state first — if state is "frozen" or depositCollateral.immediate=false, run the activation flow (sap_phoenix_build_...
This record as markdown: /tools/oobe-protocol-labs-sap-mcp-server/sap-phoenix-build-deposit.md
What sap_phoenix_build_deposit does on Sap
AI agents use sap_phoenix_build_deposit 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 |
|---|---|---|---|
authority | string | Yes | Trader authority public key (base58) |
amountUsdc | string | Yes | Amount in raw USDC units (1 USDC = 1000000) |
traderPdaIndex | number | — | Trader PDA Index parameter for sap phoenix build deposit. |
traderSubaccountIndex | number | — | Trader Subaccount Index parameter for sap phoenix build deposit. |
Parameters from the server's own tool schema.
Why sap_phoenix_build_deposit is rated Critical
Constructs financial transactions moving USDC collateral into trader accounts, committing financial obligations.
From the tool's definition Build unsigned USDC deposit transaction into Phoenix trader account. Returns transactionBase64.
Attacks that exploit this kind of access
The rule that runs sap_phoenix_build_deposit 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_phoenix_build_deposit, this is the rule to start with:
Any call to sap_phoenix_build_deposit 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_phoenix_build_deposit call is checked against it from then on.
Questions about sap_phoenix_build_deposit
Build an unsigned USDC deposit transaction into a Phoenix trader account. Returns transactionBase64 for browser approval. Requires an ACTIVATED trader: check sap_phoenix_get_trader_state first — if state is "frozen" or depositCollateral.immediate=false, run the activation flow (sap_phoenix_build_onboard_trader → sign → sap_phoenix_submit_onboard_trader) before depositing, or this build simulates CapabilityDenied. SAP MCP execution guidance: Intent: hosted unsigned transaction builder. Pricing: paid builder; estimate first, then pay/build and finalize unsigned transactions locally when returned. 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_phoenix_build_deposit accepts 4 parameters: authority, amountUsdc, traderPdaIndex, traderSubaccountIndex. Required: authority, amountUsdc. 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_phoenix_build_deposit: 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_phoenix_build_deposit 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_phoenix_build_deposit 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_phoenix_build_deposit. 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_phoenix_build_deposit 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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