bond_calc
Fixed-coupon bond math: price from yield or yield to maturity from price (clean and dirty, with accrued interest for fractional periods), current yield, Macaulay and modified duration, convexity and DV01, plus the cash-flow schedule. Treasury, corporate or zero-coupon bonds; any coupon frequency....
This record as markdown: /tools/com-it-scorptech-x402/bond-calc.md
What bond_calc does on ScorpTech x402 API
AI agents call bond_calc 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 |
|---|---|---|---|
price | number | — | Clean price (same units as faceValue): compute yield |
ytmPct | number | — | Yield to maturity in percent: compute price |
faceValue | number | — | |
frequency | integer | — | Coupons per year |
couponRatePct | number | Yes | Annual coupon rate in percent (0 = zero-coupon) |
yearsToMaturity | number | Yes |
Parameters from the server's own tool schema.
Why bond_calc is rated Low
Even though bond_calc 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 bond_calc 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 bond_calc, this is the rule to start with:
bond_calc 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 bond_calc call is checked against it from then on.
Questions about bond_calc
Fixed-coupon bond math: price from yield or yield to maturity from price (clean and dirty, with accrued interest for fractional periods), current yield, Macaulay and modified duration, convexity and DV01, plus the cash-flow schedule. Treasury, corporate or zero-coupon bonds; any coupon frequency. Price: $0.002 USDC per successful call (x402, Solana). Same tool over HTTPS: GET https://scorptech.it.com/api/x402/v1/bond-calc. It is categorised as a Read tool in the ScorpTech x402 API MCP Server, which means it retrieves data without modifying state.
bond_calc accepts 6 parameters: price, ytmPct, faceValue, frequency, couponRatePct, yearsToMaturity. Required: couponRatePct, yearsToMaturity. 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 bond_calc: 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.
bond_calc 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 bond_calc 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 bond_calc. 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.
bond_calc 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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