credit_payoff
Credit-card and revolving-balance payoff in exact cents. Give a balance, an annual percentage rate, and a fixed payment (or a minimum that is the greater of a percent of the new balance and a floor). Returns the months to zero, total interest, total paid, and a yearly rollup. Interest each month ...
This record as markdown: /tools/com-it-scorptech-x402/credit-payoff.md
What credit_payoff does on ScorpTech x402 API
AI agents call credit_payoff 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 |
|---|---|---|---|
start | string | — | First payment date YYYY-MM-DD. Later payments fall on the same day, clamped to the month end |
balance | string | Yes | Current balance, decimal |
payment | string | — | Fixed payment per month |
ratePct | string | Yes | Annual percentage rate, e.g. 19.99 |
minFloor | string | — | Minimum payment floor used with minPercent, default 0 |
minPercent | string | — | Instead of a fixed payment: percent of the new balance (after interest) |
Parameters from the server's own tool schema.
Why credit_payoff is rated Low
Even though credit_payoff 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.
Attacks that exploit this kind of access
The rule that runs credit_payoff 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 credit_payoff, this is the rule to start with:
credit_payoff 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 credit_payoff call is checked against it from then on.
Questions about credit_payoff
Credit-card and revolving-balance payoff in exact cents. Give a balance, an annual percentage rate, and a fixed payment (or a minimum that is the greater of a percent of the new balance and a floor). Returns the months to zero, total interest, total paid, and a yearly rollup. Interest each month is round-half-up of balance × APR / 12. The last payment is the remaining balance plus that month's interest. Refuses a payment that does not cover the interest. Price: $0.002 USDC per successful call (x402, Solana). Same tool over HTTPS: GET https://scorptech.it.com/api/x402/v1/credit-payoff. It is categorised as a Read tool in the ScorpTech x402 API MCP Server, which means it retrieves data without modifying state.
credit_payoff accepts 6 parameters: start, balance, payment, ratePct, minFloor, minPercent. Required: balance, ratePct. 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 credit_payoff: 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.
credit_payoff 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 credit_payoff 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 credit_payoff. 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.
credit_payoff 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.
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