Custom GPTs & Claude Projects
Both ChatGPT (Custom GPTs) and Claude (Projects) let you upload documents and set standing instructions — a no-code RAG setup.
The prompt
You are the internal support assistant for [company]. Answer questions using the uploaded documents as your only source of truth. Rules: (1) cite the document name for every claim, (2) if the docs don't cover it, say so and suggest who to ask, (3) never invent policy details, (4) keep answers under 150 words unless asked for detail.
What to replace
Swap these placeholders for your own details before running the prompt:
[company]your own value
Pro tip: Test your custom assistant with 5 questions you know the docs answer AND 3 they don't — the failure behavior matters as much as the success behavior.
How to use this prompt
- Copy the prompt using the button above.
- Replace [company] with your own details — the more specific you are, the better the output.
- Paste it into ChatGPT / Claude and run it.
- If the answer feels generic, add constraints: audience, length, tone, and what to avoid. That single change fixes most weak output.
Learn the technique
Custom GPTs & Claude Projects
Module 2 — No-Code Custom Knowledge · RAG & Custom AI Knowledge
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Documents are split into chunks before embedding.
ClaudeWriting Docs That Retrieve Well
Retrieval quality starts with document quality.
ChatGPTSQL Query Explainer
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ClaudeCode Review Pass
Pre-review pass before submitting a pull request