PM Wisdom, a directory of prediction-market tools, interviewed me about how 0xinsider started, how we tell a skilled wallet from a big one, and why we're going deeper on Polymarket instead of wider. Here's the full interview.
What pushed you to build 0xinsider?
It started pretty randomly. A coworker mentioned that her husband was building Polymarket bots. I got curious, started digging into prediction markets, and basically never stopped.
I've been building software for more than a decade, and 0xinsider is probably my tenth startup. I've built crypto tools, hiring products, fashion brands, AI products, all kinds of stuff. Most of them failed.
That taught me that being able to build something isn't enough. You need a market you genuinely care about, a real edge, and a reason for people to pay.
Polymarket was the first thing in a long time where all three clicked. You have millions of decisions made with real money behind them, tied to wallets, and eventually you get a hard answer about who was right. That is an incredible dataset to build on.
Why focus on sports and esports?
Sports made sense from a data perspective because games resolve constantly. Every resolved market gives us another clean data point instead of waiting months for something to settle.
Esports is more personal. Before I really got into software, I was semi-pro in League of Legends. I played top and jungle, got to around 2750 Elo in Season 2, and spent a lot of time playing with and against pros and semi-pros.
It never became a career, but gaming was a huge part of my life.
So sports gives us repetition and data, and esports is a world I already understand.
How do you separate sharp activity from noise?
The biggest mistake is assuming a big bet is a smart bet. Size and skill are completely different things.
We start with the wallet behind the trade. Has it actually made money? Over how many settled markets? At what prices? How bad are the drawdowns? Is it actually good in this specific category?
Then we look at the market around it.
If profitable wallets are heavily positioned one way but the price already reflects that, there might not be much signal left. What gets interesting is when good traders and the market price disagree.
A $50,000 trade from a bad wallet is still a bad wallet's opinion.
What makes a trader worthy of an S grade?
I deliberately made S hard to get.
About 95% of the grade comes from realized profit. Not paper gains or one giant open position. Actual money the wallet has banked.
For S, you also need a meaningful history of resolved markets, serious volume, and a drawdown record that shows you survived more than one lucky streak.
Then we look at consistency, entry prices, win rate with sample-size adjustments, and risk. The full framework is published on the 0xinsider leaderboard and methodology page.
Someone going 8 for 8 is interesting. Someone doing it across hundreds of resolved markets while consistently making money is evidence.
How should traders use your signals responsibly?
As context, not a copy-trading button.
One thing our own research has made very clear is that these markets are pretty efficient. Even strong traders usually have relatively small edges over the market across large samples.
So "an S-grade wallet bought this" does not mean "this is going to win."
I'd look at the price first, then the wallets, their history in that sport, how many strong wallets agree, and when they entered.
The signal should make you investigate a market, not turn your brain off.
Why publish a daily pick and its full record?
Because it's very easy to build analytics and tell people they're useful. It's harder to actually put a side and a price on the record every day.
The daily pick is basically 0xinsider eating its own cooking.
And I don't want the usual betting-account bullshit where the wins get screenshotted and the losses disappear.
The pick is published before the game, the result gets graded afterward, and the full history stays visible on the Pick of the Day record.
If the product is good, the record should speak for itself. If it's bad, people should be able to see that too.
What are developers building with your API and MCP?
The interesting part is that 0xinsider doesn't have to be a website.
The developer API gives developers access to the same trader grades, large trades, market flow, positions, and wallet history that power the product.
So they can build their own dashboards, alerts, research tools, models, or trading workflows on top of it.
MCP takes that another step. You can connect 0xinsider directly to tools like Claude, Cursor, Codex, or Gemini and ask things like, "Which strong wallets are backing this game?" or "What has this trader historically been good at?"
The agent can query live structured Polymarket data instead of guessing from the web.
That machine-to-machine side of 0xinsider is something I'm really excited about.
Why go all-in on Polymarket?
Because Polymarket gives us exactly the kind of data 0xinsider needs.
Every trade connects back to a wallet, which means we can build a real history around that trader: what they trade, how much they've made, where they perform best, what prices they enter at, and how they behave over time.
That identity layer is incredibly important.
We're not just analyzing markets. We're analyzing the people participating in them and asking whether their current position deserves attention.
Polymarket also has a huge advantage for us because the underlying market data is public. That lets us build deeply around it without depending on a closed data feed disappearing overnight.
What have users taught you since launch?
That raw data is not the product.
0xinsider started as basically a firehose of large trades. A big trade happened, we showed it quickly. Cool, but eventually the obvious question is: so what?
What people actually want to know is who made the trade, whether that person is any good, whether other good traders agree, and whether the market price already reflects it.
That changed how I think about the whole company.
I'm much less interested in showing people more data now. I want to remove data until the thing that actually matters is obvious.
What are you building next?
Going deeper, not broader.
I want 0xinsider to become the best intelligence layer for Polymarket sports and esports.
That means better sport-specific trader grading, better ways to understand where profitable wallets are positioned, stronger historical research, better signals, and more infrastructure for developers and AI agents.
The moat isn't access to Polymarket data. The data is public.
The value is turning years of wallet history, millions of positions, and constantly resolving markets into something useful in real time.
That's what I want 0xinsider to own.
PM Wisdom keeps a verified 0xinsider listing with a product overview, methodology, developer surfaces, and risk notes.
