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How to pull markets from Polymarket by specific niche Most people work with all markets at once - and drown in data If you’re building a tool or analyzing a specific topic, you need filtering by niche right from the start Here’s how it works via the Gamma API >Tags are the basis of filtering Every market on Polymarket has tags Every tag has a numeric ID. It is exactly through this ID that filtering happens: • Politics → tag_id = 2 • Sports → tag_id = 1 • Crypto → tag_id = 21 First you make a request to /tags/{id} to make sure the tag exists and to get its metadata Then you pass this ID as a parameter in the request to /markets >Request parameters Gamma API accepts flexible parameters - you can combine them for any task: • tag_id - filter by niche • closed - only completed or only active markets • end_date_min / end_date_max - time range • limit / offset - pagination, maximum 200 per request • order / ascending - sorting by date, volume, etc >Pagination There are a lot of markets - the API returns them in pages You need to make requests in a loop, each time increasing the offset by the page size, until you get an empty response >Volume filtering The API returns all markets, including micro-markets with zero volume It usually makes sense to additionally filter by minimum volume - for example from $50,000 - to keep only liquid markets where there was real trading >Result At the output you get a clean list of markets for a specific niche for the required period - with volumes, prices, resolution dates and metadata This can be used for strategy analysis, backtesting, building a dashboard or training a model Three parameters - tag, period, minimum volume That’s enough to pull any niche from Polymarket

If you want to build on Polymarket, start by getting to know their API There are three of them, and each is responsible for its own task Without this basic understanding, any tool or bot would be built on a whim 1. Gamma API - Markets and Discovery This is your gateway to the data. Through it, you can retrieve a list of all markets and events, filter by category, and search for specific markets. This is where most tools pull their metadata - market names, descriptions, tags, and status. It works without authentication. 2. CLOB API - Prices and Order Book Everything related to live trading. Current prices, historical data, spreads, and a real-time order book. If you’re building a bot that trades or analyzes price movements, this is where you’ll spend most of your time. Orders are also placed and executed through this interface. 3. Data API - Positions, Trades, and Analytics Everything related to a specific wallet and trading history. A user’s current positions, closed positions, trade history, total open interest, and the market’s top holders. This API forms the foundation of any wallet tracker or analytical tool. Three APIs - three layers of data: discovery, trading, and analytics. If you understand this, you understand how Polymarket works under the hood.

How to make $5,000-15,000 building simple tools for Polymarket Polymarket processes billions of dollars a month, and there are still almost no decent tools for traders Only 5% of Polymarket's total volume comes from the ecosystem - meaning 95% of liquidity is still untapped This is a classic indie hacker opportunity: you take one specific trader pain, vibe code a simple tool that solves it in a few days, and sell it as a subscription No venture capital, no team, no investors What you can build right now: > Telegram bot with alerts when a market probability shifts fast > Wallet tracker with clean analytics on traders > Real-time portfolio monitoring dashboard > Market screener with filters by volume, probability, and movement Any of these can be built with vibe coding in a few days How to find your first users: They're already out there - on Twitter, in the Polymarket Discord, on Reddit Show up, show what you built, give free access to the first 20 people, collect feedback Traders who are making money on Polymarket will happily pay for tools that give them edge or save them time How to monetize: $15-30/month subscription. Niche SaaS tools consistently reach $5-15K with a few hundred paying users. You can also sell the business on Acquire - niche SaaS exits at 2-4x annual revenue. The market is growing. The tools don't exist. The window is open