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name: guideline-lookup description: Look up Fannie Mae underwriting guidelines for income, assets, credit, or collateral verification. Use when questions involve DTI, income documentation, asset requirements, credit standards, or any B3/B4 guideline references. Reads guidelines dynamically from configs/guidelines/ - never hardcodes content. allowed-tools:

• Read
• Glob
• Grep
• Bash

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Fannie Mae Guideline Lookup

Purpose

Query Fannie Mae Selling Guide sections for underwriting requirements without hardcoding guideline content.

Instructions

Step 1: Check if guidelines exist

Copyls configs/guidelines/

If the directory is empty or missing, instruct the developer:

Copymake fetch-guidelines

Step 2: Identify the relevant section

Guidelines are organized by domain:

Step 3: Read the relevant guideline file

Copy# List available guidelines in a section
ls configs/guidelines/income/

# Read a specific guideline
cat configs/guidelines/income/b3-3.1-01.md

Step 4: Quote directly from the file

• Always quote the exact text from the markdown file
• Include the guideline ID (e.g., B3-3.1-01) in your response
• Note the effective date if present

Common Topics by Guideline

Income (B3-3.1 through B3-3.2)

• B3-3.1-01: General income information
• B3-3.1-02: Employment documentation standards
• B3-3.1-03: Base pay, salary, hourly, bonus, overtime
• B3-3.1-04: Commission income
• B3-3.1-05: Secondary/seasonal employment
• B3-3.1-06: IRS Form 4506-C requirements
• B3-3.1-07: Verbal verification of employment
• B3-3.1-08: Rental income
• B3-3.1-09: Other income sources
• B3-3.2-01: Self-employed borrower underwriting
• B3-3.2-02: Business structures

Assets (B3-4.1 through B3-4.3)

• Asset documentation requirements
• Gift fund guidelines
• Reserves requirements

Credit (B3-5.1 through B3-5.4)

• Credit score requirements
• Credit history evaluation
• Debt-to-income calculations

Collateral (B4-1.1 through B4-1.3)

• Appraisal requirements
• Property eligibility
• Title requirements

Important

• NEVER hardcode guideline content in responses
• ALWAYS read from configs/guidelines/ files
• Guidelines may be updated - always read the current file
• Reference internal/guidelines/fetcher.go:SectionConfig for URL mappings