Avani Chaskar
Avani Chaskar, Ashutosh MaheshwariGet insights into using AI for real world scenarios.
| Platform |  | Pricing | Only free issues | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 33 | Founded | 2 years ago | Last Issue | 12 days ago |
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avanichaskar.substack.comLatest Issues
How FastAPI Uses Pydantic to Validate Every Request
Recap: part 1 was validation basics, part 2 was fields and constraints, part 3 was nested models, part 4 was config. In production, you don’t call .model_validate() by hand — a framework does it on every request. Usually, that’s FastAPI....
How Meta Secures an AI Agent That Can Act on Your Behalf
AI agents change the security problem.
A chatbot can give you a bad answer.
An agent can send the email, access the account, visit the website, download the file, or spend the money.
That makes a simple question much harder:
What happ...
Pydantic Settings 101: .env Files, Secrets, and Fail-Fast Config
A missing environment variable took down a production deploy at 3am. Not a bad request. Not bad user input. The app’s own configuration was wrong, and nothing caught it until the app was already live. Here’s how Pydantic stops that.
Quick...
How to Validate Nested JSON with Pydantic (Real Examples)
Quick recap before we start: Part 2 was about making one object strict: every field, the right type, the right length, the right pattern.
But here’s the thing: real data is never just one flat object. Think about it, an order has a custom...
Pydantic Fields Explained: A Model Is Only as Strict as Its Fields
In part 1, a missing email crashed our support bot three functions downstream. We fixed it with a type hint. Then someone submitted an empty name, a fake order ID, and a message longer than our database column — and every field passed.
A t...
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