Publish Google GenAI + Pydantic v2 Structured JSON Model Card

README.md

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+---
+license: mit
+tags:
+  - fastapi
+  - gemini
+  - google-genai
+  - pydantic
+  - structured-outputs
+  - micro-saas
+---
+
+# ⚡ FastAPI + Google Gemini 2026 Structured JSON Blueprint (Python 3.13 Ready)
+
+[![CI Passing](https://github.com/RAZIO05/fastapi-gemini-2026-blueprint/actions/workflows/ci.yml/badge.svg)](https://github.com/RAZIO05/fastapi-gemini-2026-blueprint/actions)
+[![Python 3.10-3.13](https://img.shields.io/badge/Python-3.10--3.13-blue.svg)](https://yahiaoui26.gumroad.com/l/fastapi-gemini-blueprint)
+[![FastAPI](https://img.shields.io/badge/FastAPI-Async-009688.svg)](https://yahiaoui26.gumroad.com/l/shipai-pro)
+[![Google Gemini](https://img.shields.io/badge/Google%20Gemini-3.5%20Flash%20JSON-orange.svg)](https://yahiaoui26.gumroad.com/l/shipai-pro)
+[![ShipAI Pro](https://img.shields.io/badge/ShipAI%20v2.0-Commercial%20SaaS%20Engine-brightgreen.svg)](https://yahiaoui26.gumroad.com/l/shipai-pro/LAUNCH20)
+
+<p align="center">
+  <a href="https://yahiaoui26.gumroad.com/l/shipai-pro/LAUNCH20">
+    <img src="https://public-files.gumroad.com/00b6jvp3mssqjd59jm1ax12xa5q9" alt="ShipAI v2.0 — FastAPI + Google Gemini Commercial Micro-SaaS Engine" width="100%" />
+  </a>
+</p>
+
+> **Stop fighting unstructured LLM markdown and Python 3.13 `bcrypt` crashes.**
+> This reference blueprint shows how to wire **FastAPI**, **Pydantic v2**, and the official **`google-genai` SDK** with native `response_mime_type="application/json"` and 3-model automatic failover.
+
+---
+
+## 🎁 Grab the Free 2026 Architecture Cheat Sheet ($0) or Full Commercial Boilerplate
+
+* 📘 **[Download the Free 2026 Architecture Blueprint & Cheat Sheet ($0)](https://yahiaoui26.gumroad.com/l/fastapi-gemini-blueprint)**
+* 🚀 **[Get ShipAI v2.0 Commercial Engine (20% OFF with code `LAUNCH20`)](https://yahiaoui26.gumroad.com/l/shipai-pro/LAUNCH20)** — Includes:
+  * 💳 **SaaS Credit Wallet & HTTP 402 Guard** (`app/monetization.py`)
+  * 🔑 **Live Gumroad License Key Verification API** (`/api/v1/billing/activate-license`)
+  * 🎯 **5 Pre-Built Vertical Micro-SaaS Presets** (AI Startup Validator, Legal Contract Risk Auditor, OWASP Code Security Reviewer, Resume ATS Optimizer, Programmatic SEO Architect)
+  * 📊 **Streamlit v2.0 Executive Dashboard** + **Docker Compose Stack**
+  * 🛡️ **30-Day 100% Risk-Free Money-Back Guarantee**
+
+---
+
+## 1. Enforcing Strict Pydantic v2 JSON with 3-Model Gemini Failover
+
+```python
+import os, json
+from google import genai
+from pydantic import BaseModel
+from typing import List
+
+client = genai.Client(api_key=os.getenv("GEMINI_API_KEY"))
+
+DEFAULT_MODELS = [
+    os.getenv("GEMINI_MODEL", "gemini-3.5-flash"),
+    "gemini-flash-lite-latest",
+    "gemini-3.8-flash",
+]
+
+class AIStructuredResponse(BaseModel):
+    status: str
+    summary: str
+    key_points: List[str]
+    action_items: List[str]
+
+def generate_structured_json(prompt: str, system_instruction: str) -> AIStructuredResponse:
+    for model_name in DEFAULT_MODELS:
+        try:
+            res = client.models.generate_content(
+                model=model_name,
+                contents=prompt,
+                config={
+                    "response_mime_type": "application/json",
+                    "system_instruction": system_instruction,
+                },
+            )
+            return AIStructuredResponse(**json.loads(res.text))
+        except Exception as err:
+            if any(code in str(err) for code in ("404", "503", "UNAVAILABLE", "NOT_FOUND")):
+                continue
+            raise
+```
+
+## 2. Fixing the Python 3.12 / 3.13 `passlib[bcrypt]` 72-Byte Startup Crash
+
+Pin `bcrypt==4.0.1` alongside `passlib[bcrypt]` in `requirements.txt` to avoid the `ValueError: password cannot be longer than 72 bytes` exception during container boot:
+
+```txt
+fastapi
+uvicorn
+google-genai
+pydantic[email]
+passlib[bcrypt]
+bcrypt==4.0.1
+python-jose[cryptography]
+```
+
+---
+
+## 🚀 Want the Complete Production Micro-SaaS Repository?
+
+Skip 35+ hours of wiring JWT auth, SaaS credit quotas, Gumroad license verification, Streamlit UI, automated tests, and Docker Compose:
+
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