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Re:TCG Appraise
x402
Re:TCG Appraise is a paid API for AI agents from www.retcg.xyz, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).
Returns multi-currency appraisal values for a Pokémon TCG card across raw and all graded conditions (PSA/BGS/CGC/SGC), with momentum, lifecycle phase, projections, PnL, break-even, and EIP-712 signature.
Price / call$0.02
Success—
StatusUnknown
How this service works
Trading-card appraisal: raw and every grader×grade (PSA/BGS/CGC/SGC) in USD, EUR, USDC, EURC, GBP, JPY, ETH, SOL and BTC, each with its source, n and window; the set's lifecycle phase, measured 30-day momentum and heat; projections through the phases ahead; PnL net of venue fees; break-even; EIP-712 signed. Pokémon only for now.
Output
A structured JSON response containing: per-condition (raw + every grader×grade) prices in all requested currencies, each annotated with data source, sample count (n), and time window; the card set's current lifecycle phase; 30-day momentum and heat metrics; projected values through upcoming lifecycle phases; PnL and break-even computed against the provided cost basis and net of venue fees; and an EIP-712 cryptographic signature over the result.
Example use cases
Pre-sale graded card valuation
“I'm about to list my PSA 10 Charizard (pokemon:base1-4) on eBay — what's the current appraisal across all graded tiers in USD and GBP, and what's my break-even if I paid $800 for it?”
Crypto portfolio allocation check
“I want to know the current value of pokemon:sv3pt5-199 in ETH, SOL, and BTC across raw and all graded conditions — I'm trying to figure out if it makes sense to trade it for crypto.”
Investment PnL tracking for collector
“I bought pokemon:swsh12-160 on 2023-11-01 for $25 — what's the full appraisal today in USD and USDC, what's my PnL net of fees, and how is the set's momentum and lifecycle phase looking?”
Technical details
Endpoint
GEThttps://www.retcg.xyz/api/appraise/:id?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, multi-currency, multi-grader appraisal of a specific Pokémon TCG card — especially when you need graded vs raw price comparisons, lifecycle phase context, momentum/heat signals, forward projections, or PnL accounting against a known cost basis. It is distinctly more analytical than a simple last-sale lookup; prefer it for investment decisions, sell/hold analysis, or crypto-denominated valuations.
Side effects
- Invalid or unsupported card ID format returns an error (only pokemontcg.io IDs for Pokémon supported)
- Non-Pokémon game IDs (e.g. Magic: The Gathering) rejected — Pokémon only currently
- Malformed date in 'on' query param (not YYYY-MM-DD) causes parse error
- Unknown denomination in 'denoms' param returns validation error
- Insufficient market data for rare/obscure cards may result in null or low-confidence values
- Payment failure ($0.02 USDC via x402) returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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