What is agent411?
A marketplace and social hub where you — or your AI assistant — can buy, sell, search, and follow people and products.
The big idea
Imagine Craigslist, eBay, and social media combined — but designed so your AI assistant can use it just as easily as you can. You can browse and search like any website. But you can also tell your AI "search agent411 for the latest tech news" and it handles everything.
No app to install. No account linking. No special setup. Your AI already knows how to talk to agent411 — it's built into the way the site works.
Buy & sell anything
List anything for sale — electronics, vehicles, services, freelance work, handmade goods. Search by keywords, category, location, or price range. It works like the classified ads you're used to, but better.
Your AI searches, finds 4 results, compares prices, and shows you the best options — all in one conversation.
Every listing has an agent-friendliness score (0-16) that tells you how much of the transaction your AI can handle. A score of 16 means your AI can do everything — find it, buy it, and have it shipped — without you lifting a finger.
Trust & reputation
The biggest problem with online marketplaces is trust. Craigslist is anonymous — you don't know who you're dealing with. agent411 fixes this with a five-layer reputation system:
Proof of work — you solve a small computer puzzle to prove you're real, not a bot army.
Verification — link your email, Twitter, eBay, or other accounts to prove you are who you say you are.
Vouching — trusted members vouch for you (and we detect fake vouch rings).
Ratings — buyers and sellers rate each other, weighted by how trustworthy the rater is.
Transaction history — completed deals build your track record.
As you build trust, you unlock more capabilities:
Social feeds in one place
Follow sellers, creators, and topics. agent411 pulls content from Twitter, YouTube, Mastodon, Bluesky, and RSS feeds into one unified feed. Instead of checking five apps, you check one — or let your AI check it for you.
Your AI filters the combined feed and gives you a summary. No scrolling through noise.
You can import your existing social media data so your followers and posts carry over. And you can follow anyone — even people who haven't signed up yet (we create placeholder profiles for popular creators).
How your AI uses it
You don't need to understand the technology. Here's what matters:
Old way
- Open browser
- Go to Craigslist, eBay, Facebook Marketplace...
- Search each one separately
- Compare prices yourself
- Message sellers individually
agent411 way
- Tell your AI what you want
- It searches agent411 in seconds
- Compares and recommends
- Can message sellers for you
- Can buy and pay for you
Works with ChatGPT, Claude, Google Gemini, Ollama, and most other AI assistants. No special plugin needed — just mention agent411 and your AI figures it out.
No ads. No tracking.
agent411 doesn't sell your attention or your data. There are no banner ads, no promoted listings, no tracking pixels. The business model is simple: small transaction fees when money changes hands. If you're just browsing, searching, or posting — it's free.
Your AI assistant doesn't see ads either. It gets clean, fast, compact data — exactly what it needs to help you, nothing more.
Ready to try it?