Custom GPT: Build Your Personal Operations Reference Assistant

What This Builds

You'll create a custom ChatGPT assistant (called a "Custom GPT") pre-configured to know your role, your firm's style of correspondence, your most common document types, and the specific regulatory context you work in. Instead of explaining your situation every time you open a new chat, your Custom GPT already knows you're a financial operations specialist and writes in your firm's tone from the very first response.

Think of it as a dedicated AI assistant that starts every conversation already briefed on your job — like a knowledgeable colleague who's always available.

Prerequisites

• ChatGPT Plus subscription ($20/month at chat.openai.com) — Custom GPTs require Plus
• 3–5 example letters/emails from your firm (NIGO letters, KYC requests, status updates) with all client data removed
• A description of your role and common tasks

The Concept

A Custom GPT is a version of ChatGPT you configure once with specific instructions, knowledge, and a persona. After setup, every conversation with it starts from that shared understanding automatically — no need to re-explain your role, your firm's style, or what NIGO stands for. It's the difference between training a new temp worker every morning versus having a dedicated assistant who already knows your workflows.

Build It Step by Step

Part 1: Gather your materials

Before building, collect:

1. Style examples — 2–3 NIGO letters with client names replaced by [CLIENT NAME], account numbers removed
2. Process notes — A brief description of your most common tasks (NIGO letters, KYC requests, wire status updates, escalation memos)
3. Regulatory context — A short paragraph describing the regulatory environment (broker-dealer, FINRA-regulated, T+1 settlement, BSA/AML requirements)

Part 2: Create the Custom GPT

1. Sign in at chat.openai.com with your Plus account
2. Click your profile icon (top right) → My GPTs → Create a GPT
3. The GPT builder opens with two panels: left panel (configuration) and right panel (preview)

Part 3: Write the system instructions

Click the Configure tab in the left panel. Fill in each field:

Name: FinOps Operations Assistant

Description: Personal assistant for financial operations back-office tasks — NIGO letters, KYC requests, compliance memos, regulatory summaries, and trade communication.

Instructions: Copy and paste this (customize the bracketed parts):

You are a specialized assistant for a financial operations specialist at [your type of firm: broker-dealer / bank / investment firm].

Your user processes high-volume back-office operations including:
- NIGO (Not In Good Order) letters for incomplete account documentation
- KYC/AML document request emails
- Trade exception status communications to financial advisors
- Internal escalation memos for unresolved exceptions
- Regulatory notice summaries for the operations team
- Wire transfer processing correspondence
- Compliance checklists and procedure documentation

WRITING STYLE:
- Professional, clear, and direct
- No legal jargon — plain business English
- First name basis in openings when appropriate ("Dear John,")
- Brief closing ("Please don't hesitate to contact us with questions.")
- Firm name: [Your Firm Name] (use this in all correspondence)
- Always include a deadline when requesting documents (default: 10 business days)

IMPORTANT RULES:
- Never invent regulatory rules — if unsure, say "please verify with compliance"
- When drafting compliance correspondence, note at the end that human review is required before sending
- Never ask for clarification that isn't needed — if you have enough info to draft, just draft it
- Keep everything concise — operations professionals value brevity

DEFAULT FORMATS:
- NIGO letters: formal letter format, numbered deficiency list, resubmission instructions
- KYC emails: professional email format, bulleted document list, portal/email for submission
- Status updates: brief email, current status, expected completion, no action required from recipient
- Escalation memos: Background / Issue / Risk / Recommended Action format

Part 4: Upload your style examples

In the Configure tab, scroll to Knowledge → Upload files:

• Upload your cleaned NIGO letter examples (PDFs or .txt files)
• Upload any other correspondence examples

The Custom GPT will use these as style references.

Part 5: Set conversation starters

In the Configure tab, under Conversation starters, add these:

1. "Draft a NIGO letter"
2. "Write a KYC document request"
3. "Draft a status update email"
4. "Summarize this regulatory notice"

These appear as buttons when someone opens your GPT.

Click Save → Select "Only me" for visibility.

Part 6: Test it

Click the link to open your Custom GPT. Try a conversation starter:

Click "Draft a NIGO letter" and you should see it ask for the specifics. Respond: "IRA account, missing beneficiary form and signature on page 3, account holder: [Client Name], deadline 10 business days"

What you should see: A complete, properly formatted NIGO letter in your firm's style — using your firm name and the format from your uploaded examples.

Adjust the instructions if anything is off.

Real Example: Your Custom GPT in Daily Use

Scenario: Three types of correspondence due this morning: 2 NIGO letters, 1 KYC email, 1 advisor status update.

Old way: Open ChatGPT, explain your role and style context for each new chat (or hope it remembers), draft each piece.

New way: Open your Custom GPT. It already knows your role and style. For each piece:

• "Draft a NIGO letter for [missing items]" → letter appears in 10 seconds
• "Write a KYC email to an LLC requesting [documents]" → professional email appears
• "Update for advisor: ACATS transfer for [account] is on day 4 of 6" → brief, perfect status email

Total time: 10–15 minutes instead of 30–40.

Example prompt to copy-paste:

Draft a NIGO letter. Account type: Joint Brokerage. Missing: (1) both account holders' signatures on the application, (2) copy of government-issued ID for secondary account holder. Deadline: 10 business days.

What to Do When It Breaks

• GPT ignores the style instructions → Try adding the style note to the specific prompt: "Use the formal letter format from our style guide." If it persists, simplify the instructions — shorter, clearer instructions often work better than detailed ones.
• GPT adds extra content you don't want → Add to instructions: "Do not add closing disclaimers, legal notices, or additional sections unless specifically asked."
• GPT doesn't use your firm name → Make sure the firm name is clearly stated in the instructions and in your example files. Check that example files are properly uploaded.
• GPT asks too many clarifying questions → Your instruction says "if you have enough info, just draft it" — but reinforce this: "If you're missing a detail, make a reasonable assumption and note it in brackets like [ADD DATE HERE]."

Variations

• Simpler version: Use a regular ChatGPT conversation with your style note at the top, saved as a chat you return to each day (no Plus subscription needed, but you lose the persistent Custom GPT configuration).
• Extended version: Add multiple knowledge files covering different correspondence types, and create multiple conversation starters for each one — effectively a menu of your daily tasks.

What to Do Next

• This week: Build it, test it with 5 real tasks, tune the instructions based on output quality
• This month: Save 30+ minutes per week consistently; refine the style as you discover edge cases
• Advanced: Build a second Custom GPT as the "Onboarding Assistant" for new team members, configured to explain procedures in teaching-mode language

Advanced guide for Financial Operations Specialists. Custom GPTs require ChatGPT Plus ($20/month). All AI-drafted compliance correspondence must be reviewed by a human before sending. Do not upload documents containing client PII.