Deploy your FastAPI app to Cloudflare Pages
Step-by-step deployment help for FastAPI apps on Cloudflare Pages. We fix FastAPI-specific deployment issues, configure Cloudflare Pages, and get your app live. From $19.
FastAPI issues we fix before deploying
Common FastAPI problems that affect Cloudflare Pages deployments.
Blocking calls inside async endpoints
Synchronous database calls, file operations, or HTTP requests inside async def endpoints block the entire event loop, making your API unresponsive under load.
Missing authentication on endpoints
API routes that handle sensitive data or actions without any auth middleware — Depends() for authentication is simply not included in the route definition.
No CORS configuration
CORSMiddleware either missing (blocking all cross-origin requests) or set to allow_origins=['*'] (allowing any website to call your API).
Pydantic models without validation constraints
Request models that accept any string length, any number range, and any format. No Field() constraints, so invalid data flows through your system.
Cloudflare Pages deployment issues we check for
Common Cloudflare Pages problems that break FastAPI apps in production.
Workers runtime missing Node.js APIs
AI-generated server code uses Node.js built-ins (Buffer, fs, crypto) that don't exist in the Cloudflare Workers runtime, causing build or runtime errors.
Function invocation limits exceeded
Free tier allows 100,000 function invocations per day. AI-generated SPAs that use functions for every API call burn through limits quickly in production.
KV namespace not bound in wrangler.toml
AI tools reference KV storage in code but forget to declare the KV namespace binding in wrangler.toml, causing undefined binding errors at runtime.
Request body size limited to 100MB
Cloudflare Workers have a strict 100MB request body limit. AI-generated file upload handlers don't implement chunked uploads, failing on larger files.
Start with a self-serve audit
Get a professional review of your FastAPI project before deploying to Cloudflare Pages.
External Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 vulnerability check
- SSL/TLS configuration analysis
- Security header assessment
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerability analysis
- Code quality review
- Dependency audit
- Architecture review
- Expert + AI code analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
How it works
Tell us about your app
Share your project details and what you need help with.
Expert + AI audit
A human expert assisted by AI reviews your code within 24 hours.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
How do I deploy a FastAPI app to Cloudflare Pages?
We handle FastAPI deployments to Cloudflare Pages end to end. Start with our code audit ($19) to identify deployment blockers specific to your FastAPI project, then we configure Cloudflare Pages, fix issues, and get your app live in production.
What FastAPI issues affect Cloudflare Pages deployments?
FastAPI projects commonly have blocking calls inside async endpoints and missing authentication on endpoints. On Cloudflare Pages, these combine with workers runtime missing node.js apis and function invocation limits exceeded to cause deployment failures.
Can SpringCode deploy my FastAPI project to Cloudflare Pages?
Yes. We specialize in deploying FastAPI applications to Cloudflare Pages. We audit your codebase for FastAPI-specific issues, configure Cloudflare Pages correctly, and handle the full deployment so your app runs reliably in production.
What does FastAPI deployment to Cloudflare Pages cost?
Our code audit ($19) identifies all Cloudflare Pages deployment blockers in your FastAPI project. Full deployment assistance is scoped with a fixed quote after the audit — no hourly billing or surprise charges.
Related resources
Other techs on Cloudflare Pages
Deploy FastAPI elsewhere
Need help deploying FastAPI to Cloudflare Pages?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.