SpellBook Finance vs Langbot

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

SpellBook Finance compared with Langbot
Detail	SpellBook Finance	Langbot
What it does	Sell Magic cards across eBay, ManaPool, and TCGplayer with AI agents	Data and simulation layer for prediction markets on Kalshi and Polymarket
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free tier with core features. Premium: $8/mo or $80/yr for sealed-deals board, arbitrage alerts, and higher price-alert headroom. Free shop with 10,000 listed-card allowance (soft limit).	Free ($0/month) with 60-second delay on live data, 60 API requests/minute, 1 concurrent stream, 5 subscriptions, 20 sim runs/month; Builder ($49/month) with 10-second delay, 600 requests/minute, 5 streams, 25 subscriptions, 100 sim runs/month; Standard ($199/month) with 2-second delay, 3,000 request
Key features	Real transaction-backed pricing from TCGplayer market data Cross-marketplace price comparison Sealed product expected value rankings Portfolio tracking with cost basis and opportunity cost measurement AI agent integration for marketplace listing Daily price updates from completed sales Card inventory import from ManaBox or TCGplayer export Desktop card scanner for Mac and Windows	Order-book history with outcomes and rules for every market on Kalshi and Polymarket Live context synchronized on one clock: speech, official text and data releases Simulator with venue's real fees and timing for backtesting Full REST, WebSocket and SSE access with signed webhooks Python and TypeScript SDKs and CLI for programmatic access MCP server with phrase and market subscription tools Fair-value and live probability models for markets Signed receipts and provenance reports for evidence Paper trading mode on live record before switching to real exchange keys Timestamped facts for resolved market outcomes with speaker attribution
What makes it different	Uses real completed transaction prices instead of listing medians Focuses on sealed product expected value as a financial asset Transparent, publicly reviewed methodology Affiliate revenue does not influence rankings or recommendations	Synchronized context on the same clock: order books, market rules, and every speech or data release that moves prices Speaker attribution and verdict for each phrase: whether it counts under market rules Live recording of order books for every open market rolling out No trading signals: users control all decisions and trades with their own exchange keys
Community votes	0	0
DR (Domain Rating by Ahrefs)	1 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	4	0
Citation Flow (Majestic)	12	0
Referring domains (Majestic)	26	0

5 details filled in for both companies.

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