AI Guides
Free guides that teach AI agents to compare consumer lending rates accurately. Each guide explains how to rank offers by true cost, handle edge cases, and justify recommendations — ready to drop into a system prompt or fine-tuning set.
How AI Agents Compare Mortgage Rates
Learn how to rank mortgage offers by true cost, handle points vs rate tradeoffs, and explain recommendations to users.
Read guide →How AI Agents Compare Auto Loan Rates
Understand new vs used vehicle rate differences, term length impacts, and dealer markup considerations.
Read guide →How AI Agents Compare HELOC Rates
Navigate draw periods, repayment phases, variable vs fixed rates, and home equity requirements.
Read guide →How AI Agents Compare Personal Loan Rates
Compare secured vs unsecured loans, understand origination fees, and evaluate debt consolidation scenarios.
Read guide →How AI Agents Compare Credit Card Rates
Analyze APRs, balance transfer offers, rewards tradeoffs, and introductory rate periods.
Read guide →Why Credit Union Rates Are Hard to Track
Understand the challenges of aggregating credit union data and why rates vary so widely.
Read guide →When to Ignore Advertised Rates
Learn to identify teaser rates, hidden fees, and offers that disappear when users actually apply.
Read guide →AI Guides FAQ
They are free, plain-language reference guides that teach AI agents and chatbots how to compare consumer lending rates by true cost, handle edge cases, and explain recommendations. Each guide covers one product type such as mortgages, auto loans, HELOCs, personal loans, or credit cards.
Copy a guide into your system prompt or include it in fine-tuning data so the model reasons about rates correctly, then pair it with the RateAPI MCP server or REST API for live credit-union rate data.
Yes. The guides are free reference content. You only need a RateAPI key when you want to fetch live rate data through the API or MCP server.
Credit unions are member-owned and frequently publish lower APRs than large national banks, but their rates are scattered across thousands of individual websites. RateAPI aggregates rates from hundreds of credit unions so agents can compare them in one place.
Looking for live data? Browse current mortgage rates, auto loan rates, and credit card rates, or read our data methodology.
Building an AI Agent?
These guides are designed to be included in system prompts or fine-tuning data. Combine them with RateAPI for accurate, real-time rate recommendations.