invoice_total
Invoice math in exact cents. Each line is quantity × unit price, then an optional line discount, rounded half away from zero to the cent. An invoice-level discount comes off the subtotal, then tax is that percent of the discounted subtotal, rounded the same way. Returns every line, the subtotal, ...
This record as markdown: /tools/com-it-scorptech-x402/invoice-total.md
What invoice_total does on ScorpTech x402 API
AI agents call invoice_total to retrieve information from ScorpTech x402 API without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
lines | array | Yes | Each line: qty, unitPrice, optional description and discountPct |
taxPct | string | — | Tax percent of the discounted subtotal, default 0 |
discountPct | string | — | Invoice discount percent off the subtotal, default 0 |
discountAmount | string | — | Invoice discount as money, instead of discountPct |
Parameters from the server's own tool schema.
Why invoice_total is rated Low
Even though invoice_total only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs invoice_total safely
PolicyLayer is an MCP gateway: it sits between your AI agents and ScorpTech x402 API, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For invoice_total, this is the rule to start with:
invoice_total is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect ScorpTech x402 API, apply this rule, and every invoice_total call is checked against it from then on.
Questions about invoice_total
Invoice math in exact cents. Each line is quantity × unit price, then an optional line discount, rounded half away from zero to the cent. An invoice-level discount comes off the subtotal, then tax is that percent of the discounted subtotal, rounded the same way. Returns every line, the subtotal, discount, tax, and total. A discount larger than the amount it applies to is rejected. Price: $0.002 USDC per successful call (x402, Solana). Same tool over HTTPS: POST https://scorptech.it.com/api/x402/v1/invoice-total. It is categorised as a Read tool in the ScorpTech x402 API MCP Server, which means it retrieves data without modifying state.
invoice_total accepts 4 parameters: lines, taxPct, discountPct, discountAmount. Required: lines. The full parameter table on this page comes from the server's own tool schema.
Register the ScorpTech x402 API MCP server in PolicyLayer and add a rule for invoice_total: 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 ScorpTech x402 API. Nothing to install.
invoice_total is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the invoice_total 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 invoice_total. 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.
invoice_total is provided by the ScorpTech x402 API MCP server (https://scorptech.it.com/api/x402/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on ScorpTech x402 API, and thousands of servers like it.
This server
Across the catalogue