Keploy Contribution: Go defer and HTTP Body Leaks
Two merged PRs to Keploy: a function that read from a closed file and HTTP response bodies that were never closed. What they taught me about defer in Go.
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Posts
Security and API Fixes in Open Source: 3 Pull Requests
A Cypher injection in LightRAG, a wrong enum value in the OpenAI Python SDK and hardcoded decimals in Coinbase AgentKit: three PRs, how each ended, and why.
AI Face Detector: Spotting AI-Made Faces with MobileNetV2
AI Face Detector classifies a face photo as real or StyleGAN-generated: MobileNetV2 transfer learning, a FastAPI service, and an honest look at its limits.
DevTo-MCP: Building an MCP Server for the DEV Community API
DevTo-MCP connects the DEV Community (Forem) API to assistants like Claude: Zod input checks, a retrying API client, a draft fallback and an npm naming lesson.
gRPC High-Performance APIs with Python asyncio
Service-to-service APIs with gRPC and Protobuf: grpcio asyncio server and client, streaming, deadlines, interceptors, schema evolution, HTTP/2 load balancing.
API Authentication Strategies: JWT, OAuth 2.1, Passkeys
API authentication strategies by caller: storing API keys safely, JWT pitfalls, OAuth 2.1 with PKCE, passkeys, mTLS between services, and FastAPI dependencies.
Building a Reliable Webhook Handler in Python
A reliable webhook handler in Python and FastAPI: HMAC signature checks, replay protection, a durable inbox table, idempotent processing and event fan-out.
API Rate Limiting in Python with Redis, Lua and FastAPI
API rate limiting in Python: token bucket vs sliding window, an atomic Redis Lua limiter, a FastAPI dependency, 429 with Retry-After, and client-side backoff.
Automated Trading Systems in Python: Architecture and Risk
Structuring an automated trading system in Python with CCXT and asyncio: WebSocket data, order precision, testnet, position sizing and honest backtests.
Building a REST API with FastAPI, Pydantic v2 and Async
A practical FastAPI REST API guide: Pydantic v2 schemas, Annotated dependencies, async SQLAlchemy, testing and a lean Docker setup, with code that runs.
How a DEX Aggregator Works: Quotes, Routing, Contracts
The parts of a DEX aggregator: Uniswap V2/V3 quotes with ethers v6, gas-adjusted comparison, split routing, a safe swap contract and MEV protection.
