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Viewing profile — SamTinnerholm

SamTinnerholm

HN member
Joined
Fri, Jun 27, 2025, 8:35 PM UTC
HN karma
21
Public activity
34 items

About SamTinnerholm

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Recent public activity

  1. story
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  3. comment
    Comment #48239410

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  9. story
    Show HN: DomeAPI (YC F25) was acquired. pmxt is the open-source equivalent

    Hi HN, I'm the maintainer of pmxt. With Polymarket's recent acquisition of DomeAPI to bring their infrastructure in-house, there is a sudden gap for developers building cross-marke…

  10. story
    We bootstrapped to 450 stars by giving away risk free arbitrage opportunities

    I maintain pmxt.dev, an open-source unified API for prediction markets (Polymarket, Kalshi, etc.). We essentially built "ccxt for prediction markets." We’ve hit ~450 stars and 30k …

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    Comment #46756841

    We just released websockets today. Test coverage is high. I'd recommend checking it out to form your own opinions.

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    Show HN: Open-source library to unify Polymarket and Kalshi APIs

    I noticed prediction markets are becoming fragmented (Polymarket on-chain, Kalshi regulated/off-chain), making it painful to write cross-exchange bots. Crypto has ccxt to standardi…

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    Show HN: I built a Python wrapper to query Uniswap v3 directly

    I'm a university student and needed DeFi data for my project. CoinGecko's API pricing was way out of my budget (like, not even close). $35+/month just for high-granularity data – a…

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    Show HN: 50% cheaper crypto data. Now in Python

    Professional Crypto Data at Indie Prices. Real-time and historical OHLCV for your apps, trading bots, and backtests. 50% cheaper than traditional data providers, with no compromise…

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    Show HN: I built a crypto data API that ignores CEXs to cut costs by 85%

    The current pricing for crypto data APIs (CoinGecko/CMC) is based on a legacy requirement: maintaining hundreds of real-time websocket connections to centralized exchanges (Binance…

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    Show HN: 85% Cheaper Crypto Data

    If you've ever tried to integrate crypto market data into an app, you know the pricing for commercial APIs gets crazy fast. I couldn't justify the cost for my projects, so I built …

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    Show HN: Mintlify Ignored This Feature Request for 6 Months. Here's My Solution

    Mintlify users have been begging for pre-filled API playground fields for months. The GitHub discussion has people literally saying "I just lost two hours of my day banging my head…

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    Show HN: Turn OpenAPI specs into interactive API playgrounds

    Converts your API spec into a polished playground with live code examples. Developers can test endpoints directly in the browser with Python/JS/cURL snippets. DEMO: https://coingec…

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  21. comment
    Comment #45925566

    Cool, but it's a bit hard to rotate. Could be more intuitive.

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    Comment #45920245

    I tried creating a tool, it's been stuck "generating" for a few minutes now.

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    Comment #45919485

    I can't seem to create tools on https://anytoolhq.com/dashboard . Report back when it works, and I'll give it a try.

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    Comment #45919465

    Cool. Will try this with my agent. Quick comment: the code on the website isn't using any sort of intellisense or highlighting

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    Comment #45914908

    Hi Bob, I see what you're saying. Stay laser-focused on potential enterprise customers, and iterate with them until they pay.