Do I need a SpellBook account first?

No. Signing in through the connector creates the SpellBook account for a new email. Your agent then creates your first workspace, which is your shop, and saves your return address.

Which agent apps work with SpellBook Finance?

Muse on a phone, and Claude and Codex on macOS and Linux, are verified. ChatGPT accepts a connector URL in developer mode. Windows and other desktop apps remain unverified.

How does pricing work for sellers using SpellBook Finance?

The 10,000 listed-card allowance is soft. Going over it does not block your workflow or trigger a charge. Paid Store plans check out at Stripe in your browser, and your agent hands you that checkout link.

What price does SpellBook Finance use for cards?

The headline number is TCGplayer market price: a transaction-weighted average computed from actual completed sales. It reflects what cards really trade for, not what sellers are asking.

Why use transaction data instead of listing median prices?

Listing medians include troll listings, graded copies, and stale inventory that distort real market value. Transaction data reflects actual buyer-seller agreement, making it inherently more accurate for determining what a card is worth.

Trading & investing

SpellBook Finance

Sell Magic cards across eBay, ManaPool, and TCGplayer with AI agents

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An analytics platform for Magic: The Gathering that tracks card collections, sealed product value, and helps sellers list inventory across multiple marketplaces

Overview

Screenshot of the SpellBook Finance homepage — A look at spellbook-finance.com

SpellBook Finance is an analytics and portfolio tracking platform for Magic: The Gathering collections. It provides real transaction-backed pricing, sealed product expected value rankings, portfolio math, and seller tools.

The platform helps players track collection value, find arbitrage opportunities, and research sealed product. For sellers, SpellBook Finance offers an AI agent integration that can open a free shop, import cards from inventory lists, apply intelligent pricing, and list items across eBay, ManaPool, and TCGplayer from a single inventory.

Pricing uses transaction-weighted data from TCGplayer and cross-marketplace comparison from sources like Card Kingdom, eBay, and Cardmarket. Updates occur daily. The platform emphasizes transparent methodology and real sold prices rather than listing medians.

Feature summary

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

Pricing

Pricing model: Freemium

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).

See SpellBook Finance's full pricing (external, new tab)