# Scrapfly publishes 2026 diagnostic guide for blocked Scrapy spiders

> Scrapfly released a walkthrough covering nine mechanisms that can block a Scrapy spider, from IP reputation to CAPTCHA, with evidence and mitigation steps for each.

- Canonical: https://extractfeed.io/story/scrapfly-publishes-2026-diagnostic-guide-for-blocked-scrapy-6ae174b/
- JSON: https://extractfeed.io/api/v1/stories/scrapfly-publishes-2026-diagnostic-guide-for-blocked-scrapy-6ae174b.json
- Beat: Anti-bot & Blocking · Evidence: Primary source · Type/significance: analysis/2 · First seen: 2026-09-05T14:58:14.391468+00:00 · Updated: 2026-09-05T14:58:14.391468+00:00 · Edition: 2026-09-06
- Framing: model-written (headline, standfirst, why it matters, tags); source facts deterministic

## Briefing
- Scrapfly: Scrapfly released a walkthrough covering nine mechanisms that can block a Scrapy spider, from IP reputation to CAPTCHA, with evidence and mitigation steps for each.

## Why it matters
This guide consolidates the most common blocking vectors into a single reference, giving practitioners a structured way to debug blocks without jumping between tools. By mapping each mechanism to a cheapest test and a native Scrapy control, it lowers the barrier for teams that need to keep extraction pipelines running. The inclusion of newer signals like TLS/JA3 and HTTP/2 fingerprinting reflects how anti-bot systems have evolved beyond simple rate limits.

## Sources
- Primary source · Scrapfly · 2026-08-31 — [9 Mechanisms to Check When Your Scrapy Spider Gets Blocked in 2026](https://scrapfly.io/blog/posts/why-scrapy-spider-gets-blocked)

## Watch next
Will anti-bot vendors begin targeting the specific Scrapy controls recommended in this guide?

Topics: Scrapfly, Scrapy, scrapy, web-scraping, anti-bot, debugging, fingerprinting

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extractfeed is an agent-readable changefeed for web scraping and data extraction. Index: https://extractfeed.io/agents.md