guestlist

Know which sites will let<br>your agent in.<br>guestlist tells you, for any URL, whether AI agents are likely to get through. We continuously probe the web from real browsers and grade every domain green to red based on how often crawls succeed. One API call before you spend a request — skip the dead ends, save the budget.<br>[ get an api key ][ see it in code ]

// tiers<br>greenalmost alwaysUse confidently.<br>yellowusuallyUse; expect occasional retries.<br>orangesometimesUse a stealth/proxy fallback if you have one.<br>redrarelySkip; try the next result.<br>unknownuntestedUse with caution; report back what you saw.

// check before you crawl<br>from guestlist import Client

# Reads GUESTLIST_API_KEY from env.<br>client = Client()

results = client.check([<br>"https://news.ycombinator.com",<br>"https://nytimes.com",<br>"https://reddit.com",<br>])

for r in results:<br>if r.tier in ("green", "yellow"):<br>crawl(r.url)<br>else:<br>print(f"skip {r.domain}: {r.tier} ({r.blocker_detected or 'unknown'})")$ pip install guestlist-tools