A/B Test Calculator
Calculate statistical significance and conversion rate differences between test variants.
API Docs Generator
Auto-generate markdown API documentation from Python function signatures and docstrings.
API Key Manager
Generate, hash, store, and validate API keys with expiry and rate-limit metadata.
API Load Tester
Concurrent HTTP load tester — measures latency, throughput, and error rates against any endpoint.
Cache Proxy
Simple in-memory LRU cache proxy layer for HTTP requests — reduces redundant API calls.
Content Scheduler
Schedule and queue blog posts or social content with publish timestamps and status tracking.
Cron Monitor
Monitor cron job execution, log failures, and alert when jobs exceed expected runtimes.
CSV → JSON API
Serve any CSV file as a filterable JSON REST API with zero configuration.
Data Pipeline
Chainable data transformation pipeline — read, filter, transform, and write structured data.
Deploy Checker
Pre-deploy checklist runner — verifies env vars, DB connections, and endpoint health before deploy.
Email Validator
Validate email syntax, MX record lookup, and disposable address detection without external APIs.
Health Dashboard
Poll service endpoints on a schedule and output a status dashboard to stdout or file.
Image Optimizer
Batch resize, compress, and convert images to WebP with configurable quality settings.
JSON → TypeScript Types
Convert JSON files or API responses into TypeScript interface definitions automatically.
JWT Auth Helper
Sign, verify, and decode JWTs with HS256/RS256 — includes refresh token flow utilities.
Link Checker
Crawl a site or HTML file and report all broken links (4xx/5xx) with their locations.
Log Analyzer
Parse access logs, extract error patterns, and produce a summary report by status code.
Markdown → HTML
Convert Markdown files to clean HTML with optional CSS injection — no dependencies.
Notification Hub
Route alerts to Slack, email, or webhooks based on configurable rules and priority levels.
OG Image Generator
Generate Open Graph preview images from text and templates using Pillow.
Price Scraper
Track product prices from URLs over time and alert when prices drop below a threshold.
Rate Limiter
Token-bucket and sliding-window rate limiter implementations you can drop into any Python app.
SEO Checker
Audit a URL or HTML file for title length, meta description, H1 tags, and image alt text.
Sitemap Generator
Crawl a site and generate a valid XML sitemap — with lastmod, priority, and changefreq.
Webhook Tester
Start a local listener that logs incoming webhook payloads — useful for development testing.