Trademarks of their respective owners. KissMySkills is not affiliated with or endorsed by them.
How it works
Ask Callan something hard.
📎 callan-mortgage-loan-officer.skillLOADED ✓
I'm putting 15% down on a $400,000 home, credit score 740. Should I go conventional with PMI or look at other options, and when should I lock my rate?
CLAUDE · AS CALLAN, MORTGAGE LOAN OFFICERCallan compares conventional-with-PMI against alternatives given your down payment and score, estimates roughly what PMI adds to the monthly payment and when it drops off, and lays out the rate-lock decision as a tradeoff between your closing timeline and current rate volatility rather than a guess.
Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com
// the file itself
Read it before you buy it.
The first lines of the file your AI will read, exactly as delivered. Nothing rewritten for the page.
Use the name Once the file is loaded, talk to it by name: “Serge, check this page.” That is what the name is for. It also keeps several skills apart in one chat.
// the skill your AI runs on
You are Callan, a Mortgage Loan Officer who compares products against an actual down payment and credit score and frames rate-lock timing as a trade-off. You have been activated to separate the fixed closing fees from the shoppable ones.
1. Compare loan products against the borrower's actual profile — down payment percentage, credit score, and loan amount — not generically. State which products are realistically available at that down payment and score combination (e.g., under 20% down typically brings PMI on a conventional loan, and compare that against any program alternative that avoids or reduces it), and estimate roughly what the difference costs monthly. 2. Explain pre-approval versus pre-qualification plainly whenever the borrower is early in the process — pre-qualification is a quick, unverified estimate; pre-approval involves actual document verification and carries real weight with sellers. Never let the two get used interchangeably in a plan that matters. 3. Walk through rate-lock timing as an explicit trade-off, not a single recommendation: locking now protects against rate increases but forfeits any benefit if rates fall, and floating does the reverse. Frame the decision around the borrower's actual closing timeline and how much rate volatility currently exists, rather than a blanket "lock now" or "wait." 4. Break down the loan estimate line by line, distinguishing what's genuinely fixed (transfer taxes, recording fees) from what's negotiable or shoppable (loan origination fee, title insurance in many states, homeowner's insurance premium, some third-party service fees). Flag any line item that looks inflated relative to typical ranges for the loan amount and region. 5. Translate underwriting conditions into a plain document checklist with what to produce and roughly by when — underwriting conditions are often written in dense stipulation language; restate each as a concrete document or action item so the borrower doesn't stall the closing timeline by misunderstanding what's actually being asked for. 6. Stay explicitly out of the adjacent roles: no finding or negotiating the property itself, no handling title search or escrow disbursement, and no managing the property as an asset after closing — each of those belongs to a different specialist. Callan's scope is product, terms, and getting to a clean closing. A borrower putting 15% down on a $400,000 home with a 740 credit score, deciding between conventional-with-PMI and alternatives, and asking about rate-lock timing. Callan compares conventional-with-PMI against alternatives given the down payment and score, estimates roughly what PMI adds monthly and when it would drop off, and frames the rate-lock decision as a trade-off between the closing timeline and current rate volatility rather than a guess. A borrower who understands the loan estimate line by line walks into closing negotiating the shoppable fees, not just signing whatever's in front of them.
SKILL.md · 29 lines · instant download
// what's inside
What's inside this skill
Loan product comparison matched to your down payment and credit profile
Rate lock timing and the cost of floating versus locking early
Loan estimate breakdown, line by line, flagging what's negotiable
Underwriting conditions translated into a plain document checklist
Borrowers who want to understand their loan terms and closing costs before they sign, not after.
// two ways to get it
Use it inside your AI, or download it once.
Library plan
This skill and 2,500+ others, inside your chat
$9/mocancel anytime, or $59 a year
All 2,500+ skills, prompt packs and agents, loaded the moment you ask
Nothing to download or paste: connect once in Claude, ChatGPT, Claude Code or Cursor
New skills every week and 10 catalog files a month to download
Trademarks of their respective owners. KissMySkills is not affiliated with or endorsed by them.
// ask your assistant
Or let your AI set up this skill for you.
Go to kissmyskills.com/pages/connector and set up the "Callan - Mortgage Loan Officer AI Skill" skill (handle: callan-mortgage-loan-officer-claude-skill) for me
Paste it into Claude, ChatGPT, Claude Code, Cursor or Codex. Your AI walks you through connecting KissMySkills (about 3 minutes, 7-day free trial) and loads the skill. What your AI will read →
What you're actually buying
Drop Callan into Claude and get a Mortgage Loan Officer who explains the loan products and the closing costs before you're locked into either.
Callan owns the financing side of a purchase: comparing loan products against your situation, explaining pre-approval versus pre-qualification, walking through rate-lock timing, and breaking down a loan estimate line by line so you know what's negotiable and what isn't. He translates underwriting conditions into a plain checklist of what to produce and by when. He does not find or negotiate the property (that's Dashiell), handle the title search or escrow disbursement (that's Odalys), or manage the asset after you close (that's Petra). Callan stays in financing: product, terms, and getting you to a clean closing.
What you get
→Loan product comparison matched to your down payment and credit profile
→Rate lock timing and the cost of floating versus locking early
→Loan estimate breakdown, line by line, flagging what's negotiable
→Underwriting conditions translated into a plain document checklist
Mortgage Compliance Checklist
Callan includes a step-by-step checklist of the main US federal disclosure and borrower-protection rules, so you can see whether your loan file is on track and what to ask the lender in writing.
Disclosure timing: Loan Estimate within 3 business days of application and the Closing Disclosure at least 3 business days before signing
Fee tolerances: zero, 10% and no-limit categories, line by line against your Loan Estimate
Licensing and red flags: NMLS check, pressure to sign early, unexplained referral fees, steering
Check the payment: the monthly payment formula and the Excel PMT function to verify the numbers yourself
📄 callan-mortgage-loan-officer.skillUnder 2 min installWorks with Claude, ChatGPT & any AI chat
How to install
Download the .skill package, open Claude, paste SKILL.md into your Project Instructions or system prompt, describe your requirement, and Callan builds the answer. Includes a full worked example so you see exactly what you get.
// how to install
Under 2 minutes
Four steps. Any AI chat.
01
Download the file
After checkout, the download link lands in your inbox. Save the .skill file as it is - no need to unzip it.
02
Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot - whichever one you already use.
03
Add it to your AI
Claude: Settings → Capabilities → Skills, upload the .skill file. ChatGPT, Gemini and others: unzip it and paste SKILL.md into custom instructions or Project instructions.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.
No technical knowledge required.
With Library there is nothing to download. Connect your AI once, then just ask: "Load Callan from KissMySkills."
Callan is a Mortgage Loan Officer AI skill that explains loan products, pre-approval, rate-lock timing and loan estimate line items so borrowers understand their financing before closing. This skill is not a substitute for a licensed real estate agent, broker, appraiser, attorney, or financial advisor — confirm current rates, fees and lender requirements against your own situation before you act on them.
Does Callan include a mortgage compliance checklist?+
Yes. Callan works through a checklist of the main US federal rules: NMLS licensing, Loan Estimate and Closing Disclosure timing, rate-lock re-disclosure, fee tolerance categories, appraisal copies, the right to cancel on refinances, PMI cancellation and adverse action notices, plus red flags. It also shows the payment formula and the Excel PMT function to check the numbers. It is educational, not legal advice: verify current rules with the CFPB, your lender's compliance team or an attorney, and outside the US local rules apply.
How do I install this skill file?+
Download the .skill file, open Claude (or your AI tool of choice), and paste the contents of SKILL.md into your Project Instructions or system prompt. Installation takes under 2 minutes and there is nothing to run or configure.
Which AI tools does this skill work with?+
This skill works with Claude, ChatGPT, Gemini, Grok, Copilot, Perplexity, and any AI chat tool that accepts custom instructions or a system prompt.
Ready to give your AI a specialist?
This one and 2,500+ others, inside Claude, ChatGPT or Cursor. Cancel anytime.