# Re:TCG Appraise

> 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.

## Facts

- Endpoint: GET https://www.retcg.xyz/api/appraise/:id?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/re-tcg-appraise-e6c59190
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wOhcEQ7a9SCVxE-2notYf

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability re-tcg-appraise-e6c59190
```

Example prompt: What's my pokemon:sv3pt5-199 worth right now — give me values for raw and all PSA/BGS/CGC/SGC grades in USD and ETH, and since I paid $40 on 2024-06-15, tell me my PnL and break-even too.

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "id"
     ],
     "properties": {
      "id": {
       "type": "string",
       "description": "game:cardId — a pokemontcg.io id, e.g. pokemon:sv3pt5-199"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "on": {
       "type": "string",
       "description": "YYYY-MM-DD you bought it; reports the corpus change since"
      },
      "paid": {
       "type": "string",
       "description": "your cost basis in USD; PnL is computed against it"
      },
      "denoms": {
       "type": "string",
       "description": "comma list of USD EUR USDC EURC GBP JPY ETH SOL BTC; all when omitted"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/re-tcg-appraise-e6c59190/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.retcg.xyz](https://www.zero.xyz/host/www.retcg.xyz/llms.txt)