sap_phoenix_build_place_market_order
Build an unsigned Phoenix market order transaction. Pass authority, symbol, side (bid=buy, ask=sell), and baseUnits (human size, e.g. "0.01" SOL). numBaseLots raw lots also accepted. Returns transactionBase64 for browser approval. Builder fee applies. SAP MCP execution guidance: Intent: hosted un...
This record as markdown: /tools/oobe-protocol-labs-sap-mcp-server/sap-phoenix-build-place-market-order.md
What sap_phoenix_build_place_market_order does on Sap
AI agents use sap_phoenix_build_place_market_order 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 |
|---|---|---|---|
side | string | Yes | Order side |
size | string | — | Alias of baseUnits |
symbol | string | Yes | Market symbol |
authority | string | Yes | Trader authority public key |
baseUnits | string | — | Human-readable size in base units (e.g. "0.01" = 0.01 SOL) |
holderTier | string | — | Caller $STEVE holder tier — lowers the builder fee (bronze −10%, silver −20%, gold −30%, platinum −50%). Omit for the standard fee. |
reduceOnly | boolean | — | Reduce-only: order can only decrease an existing position (OrderFlags.ReduceOnly) |
numBaseLots | string | — | Raw base lots (advanced; overrides baseUnits) |
traderPdaIndex | number | — | Trader PDA Index parameter for sap phoenix build place market order. |
traderSubaccountIndex | number | — | Trader Subaccount Index parameter for sap phoenix build place market order. |
Parameters from the server's own tool schema.
Why sap_phoenix_build_place_market_order is rated Critical
Builds market order transactions for trading assets, constituting a financial operation.
From the tool's definition Phoenix market order transaction, bid=buy, ask=sell, baseUnits, Builder fee applies
Risk signalsHigh parameter count (10 properties)
Attacks that exploit this kind of access
The rule that runs sap_phoenix_build_place_market_order 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_place_market_order, this is the rule to start with:
Any call to sap_phoenix_build_place_market_order 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_place_market_order call is checked against it from then on.
Questions about sap_phoenix_build_place_market_order
Build an unsigned Phoenix market order transaction. Pass authority, symbol, side (bid=buy, ask=sell), and baseUnits (human size, e.g. "0.01" SOL). numBaseLots raw lots also accepted. Returns transactionBase64 for browser approval. Builder fee applies. 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_place_market_order accepts 10 parameters: side, size, symbol, authority, baseUnits, holderTier, reduceOnly, numBaseLots, traderPdaIndex, traderSubaccountIndex. Required: side, symbol, authority. 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_place_market_order: 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_place_market_order 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_place_market_order 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_place_market_order. 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_place_market_order 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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