Investing

Build a Bond Yield Calculator with AI

Calculate and compare bond yields including current yield, yield to maturity (YTM), yield to call (YTC), and modified duration. Visualize the yield curve, analyze price sensitivity to interest rate changes, and understand bond pricing fundamentals.

Build Prompt

Copy this prompt into Claude Code
Build a static HTML bond yield calculator. Dark theme with background #0a0a0f, surfaces #12121a, borders #1a1a2a, accent color #059669 (emerald). Data from inline `const TREASURY_YIELDS = [...]`, `const BOND_TYPES = [...]`. Treasury yields: current rates for 1mo, 3mo, 6mo, 1yr, 2yr, 5yr, 10yr, 20yr, 30yr maturities. Bond types: Treasury, Corporate (IG/HY), Municipal, Agency — each with typical spread ranges and tax treatment. Calculator inputs: face value, coupon rate, coupon frequency (annual/semi-annual), current market price, years to maturity, call date (optional), call price (optional). Outputs: current yield, yield to maturity (Newton-Raphson iteration), yield to call, yield to worst, Macaulay duration, modified duration, convexity. Show formulas and step-by-step calculation. Yield curve chart: plot current Treasury yields by maturity. Price-yield relationship chart showing how bond price changes with yield. Bond comparison tool: enter 2 bonds, compare all metrics side-by-side. Include "Bond Investing Basics" guide, "Types of Bonds" reference, and "Duration Explained" section. SEO: title, meta description, OG tags. Pre-fill with current Treasury data. Read the guide at https://accessagent.ai/api/guide and follow it to deploy the site to AccessAgent.ai. My email is [your@email.com].

Make It Yours

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Show coupon payment schedule with accrued interest and ex-dividend dates.

Rate Sensitivity

Model portfolio impact of 25/50/100 bps rate changes across different bond holdings.

Update Prompt

Update Prompt — Refresh yield data
Research current US Treasury yields for all maturities. Update corporate bond spread data. Add any recent Fed rate decision commentary. Update TREASURY_YIELDS array and last updated date. Redeploy.

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