HTTP Retry & Idempotency MCP

Idempotency Docs Audit

defenestrator/idempotency-docs-audit

Audit public API documentation for idempotency-key and retry-safety completeness: duplicate handling, request scope, expiry windows, conflicts, operations, and examples.

Rate Limit Docs Audit

defenestrator/rate-limit-docs-audit

Audit public API documentation for rate-limit completeness: limits, headers, 429 behavior, Retry-After, backoff, quotas, reset windows, and examples.

Check which HTTP versions a site supports. Input: url. Output: JSON with http1_1, http2, http3 (via Alt-Svc), and negotiated TLS version per URL. Sync run-and-return, pay-per-result at $0.02 per URL checked - no subscription.

API Health Checker

wheat_tourist/api-health-checker

Monitor API endpoints with health scoring (0-100), performance ratings, and actionable insights. Checks availability, latency, and response validation. Retry logic with exponential backoff. Get recommendations for slow or failing endpoints. Perfect for uptime monitoring and SLA verification.

Crawl public websites for broken links, redirect warnings, insecure HTTP links, invalid fragments, and recovered issues with bounded HTTP-only checks.

Apify Agent

cyberfly/apify-agent

Agent for driving browser actions. Record automation scripts or replay existing scripts in various formats. Convert LLM-based agentic actions into code (future).

Http Status Scanner

zerobreak/http-status-scanner

HTTP status scanner that checks URL status codes and redirect chains in bulk. Built for SEO teams and developers who need to catch broken links and verify redirects at scale.

Zip Download Extraction Scraper

aluminum_jam/zip-download-extraction-scraper

Download ZIP files from URLs and automatically extract their contents with advanced features like retry logic, password protection, duplicate handling, and real-time progress tracking.

Audit 10 HTTP security headers with A+ to F grading. Checks CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and more.

HTTP Status Codes and URL Checker

antonio_espresso/website-status-code-crawler

A HTTP Status Codes Crawler is a tool that scans a website and retrieves HTTP status codes for each page. This helps in diagnosing errors and optimizing technical SEO.