Struct Alternative: A Trader Product Against a Polymarket API and Its Showcase Dashboard

Struct is a Polymarket data-infrastructure company, describing itself in its own docs as 'the fastest API for Polymarket.' Struct Explorer, its open-source consumer dashboard, is a showcase: its GitHub description calls it a project that 'demonstrates what can be built on top of the Struct SDK,' with trader profiles, PnL charts and calendars, a leaderboard, and a Trader DNA archetype radar.

explorer.struct.to returned an HTTP 429 'Vercel Security Checkpoint' page to every fetch attempted on 2026-09-17, for the home page, robots.txt, sitemap.xml, and the traders route alike. So the Explorer facts in this comparison come from its open-source repository's README (last pushed 2026-08-03), not a live check of the deployed site, and the deployed product may since have changed.

Struct's API covers Polymarket live today, with cross-venue market matching in early access across Kalshi, Limitless, Predict.fun, and Hyperliquid. Its free tier gives 5,000 credits a month with no subscription, and an x402 pay-per-call option settles each request in USDC with no minimum.

0xinsider covers Polymarket only, and its API and MCP server require an active Pro subscription; there is no free self-serve tier.

Struct Explorer's README describes 'mark-to-market and fee-accurate' PnL, a PnL calendar heatmap, and a Trader DNA archetype built from a seven-axis radar of lifetime trading stats. How that archetype is computed is not published in the README, and no composite grade was found.

0xinsider's grade is about 95% realized (banked) profit, and eligibility floors do real work: anything above a C needs verified net-positive realized profit, and the top three grades also need a real resolved-market count and a survivable worst drawdown. The full risk-metric set (Sharpe, Sortino, drawdown, expectancy, VaR, Kelly fraction) ships on every graded wallet.

Struct's docs describe 30+ in-app alert types and 30+ webhook event types, plus open-source Telegram bots for alerts and search that anyone can fork. Its dashboard also runs an AI chat agent with an 'Insider Finder' mode, which needs an active API key to use. A hosted MCP server sits at api.struct.to/mcp, and Struct also offers per-builder fee, retention, and concentration analytics, a developer-facing feature with no 0xinsider equivalent.

0xinsider's alerts run by email today on the wallets and markets a reader names, and its own hosted MCP server ships on Pro.

Struct's API pricing is published in a straight credits table: Free ($0, 5,000 credits/mo), Hobby ($49/mo), Startup ($299/mo), Scale ($999/mo), and custom Enterprise pricing, plus two months free on annual billing. What Struct Explorer itself costs an end user, or whether any of its features are paywalled, is not published.

0xinsider's free account includes the full trader leaderboard, full trader profiles with Insights, the previous day's large trades, and one Pick of the Day. Pro adds the live large-trade feed, custom alerts, Insider Radar, the REST API and MCP server, and in-game position changes while a game is live. Current plans are on the pricing page.

Use Struct if the job is building on top of Polymarket data yourself: a free self-serve API tier, webhooks, an MCP server, and a path to other venues once market matching leaves early access.

Use 0xinsider if the job is reading a sports and esports grade someone else built and verified, with published eligibility floors and a full risk-metric set, and no API key required to start.