PokemonPriceTracker Team
Imagine asking ChatGPT:
"What's the best Charizard card to invest in right now under $200?"
And receiving an instant, data-driven analysis with current prices, historical trends, PSA grading ROI calculations, and personalized investment recommendations. That's the power of combining ChatGPT's natural language processing with the PokemonPriceTracker API.
A quiet niche: relatively few people are building Pokemon card analysis GPTs. This is a first-mover opportunity to create a unique tool that collectors will love.
By the end of this guide, you'll have a custom GPT that can:
Name: Pokemon Card Price Analyst
Description:
Expert Pokemon card investment analyst with daily-updated pricing data, market trends, and PSA grading insights. Ask me about card values, investment opportunities, or collection analysis.
Instructions:
You are an expert Pokemon card investment analyst with access to daily-updated market data via the PokemonPriceTracker API. Your role is to:
1. Help users find Pokemon card prices and market data
2. Analyze investment potential of specific cards
3. Calculate PSA grading ROI with population data
4. Compare prices across different cards and sets
5. Provide market trend insights and recommendations
When answering queries:
- Always fetch current market data from the API
- Provide specific prices and data points
- Explain your reasoning for investment recommendations
- Include relevant context (rarity, set, condition grades)
- Suggest alternative cards when appropriate
For investment analysis, consider:
- Current market price vs historical trends
- PSA population reports and grade premiums
- Set popularity and long-term potential
- Card rarity and collector demand
Be conversational, knowledgeable, and always back recommendations with data.
Conversation starters:
This is where the magic happens. Click "Create new action" and paste this OpenAPI schema:
{
"openapi": "3.1.0",
"info": {
"title": "PokemonPriceTracker API",
"description": "Daily-updated Pokemon card pricing, PSA grading data, and market analysis",
"version": "2.0.0"
},
"servers": [
{
"url": "https://www.pokemonpricetracker.com/api/v2"
}
],
"paths": {
"/cards": {
"get": {
"operationId": "searchCards",
"summary": "Search for Pokemon cards",
"description": "Search cards by name, set, rarity, or price range",
"parameters": [
{
"name": "search",
"in": "query",
"description": "Card name to search for",
"required": false,
"schema": {
"type": "string"
}
},
{
"name": "setName",
"in": "query",
"description": "Filter by set name",
"required": false,
"schema": {
"type": "string"
}
},
{
"name": "rarity",
"in": "query",
"description": "Filter by rarity",
"required": false,
"schema": {
"type": "string"
}
},
{
"name": "minPrice",
"in": "query",
"description": "Minimum price filter",
"required": false,
"schema": {
"type": "number"
}
},
{
"name": "maxPrice",
"in": "query",
"description": "Maximum price filter",
"required": false,
"schema": {
"type": "number"
}
},
{
"name": "sortBy",
"in": "query",
"description": "Sort by field (price, name)",
"required": false,
"schema": {
"type": "string",
"enum": ["price", "name", "setName"]
}
},
{
"name": "sortOrder",
"in": "query",
"description": "Sort order",
"required": false,
"schema": {
"type": "string",
"enum": ["asc", "desc"]
}
},
{
"name": "limit",
"in": "query",
"description": "Number of results to return",
"required": false,
"schema": {
"type": "integer",
"default": 10
}
}
],
"responses": {
"200": {
"description": "Successful response with card data"
}
}
}
},
"/parse-title": {
"post": {
"operationId": "parseCardTitle",
"summary": "Fuzzy match card description to database",
"description": "Parse natural language card descriptions and find best matches",
"requestBody": {
"required": true,
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"title": {
"type": "string",
"description": "Natural language card description"
}
},
"required": ["title"]
}
}
}
},
"responses": {
"200": {
"description": "Card matches with confidence scores"
}
}
}
},
"/sets": {
"get": {
"operationId": "getSets",
"summary": "Get Pokemon TCG sets",
"description": "List all Pokemon TCG sets with metadata",
"parameters": [
{
"name": "limit",
"in": "query",
"description": "Number of sets to return",
"required": false,
"schema": {
"type": "integer"
}
}
],
"responses": {
"200": {
"description": "List of Pokemon sets"
}
}
}
}
},
"components": {
"securitySchemes": {
"BearerAuth": {
"type": "http",
"scheme": "bearer"
}
}
},
"security": [
{
"BearerAuth": []
}
]
}
Now let's test it with some queries:
You: "What's the price of Charizard VMAX from Darkness Ablaze?"
GPT: "The Charizard VMAX (Secret Rare) from Darkness Ablaze is currently priced at $147.50 on the market. This card has been relatively stable, with the price hovering around $140-$155 over the past 3 months. It's one of the most iconic cards from the set and maintains strong demand from collectors."
You: "Should I invest in Umbreon VMAX Alt Art or Espeon VMAX Alt Art?"
GPT: "Based on current market data:
Umbreon VMAX Alt Art (Evolving Skies)
Espeon VMAX Alt Art (Evolving Skies)
Recommendation: Both are excellent investments, but Umbreon has stronger long-term potential due to its lower population and iconic status. However, Espeon offers better short-term value with stronger recent growth and lower entry cost. For portfolio diversification, consider both."
You: "Is it worth grading my raw Rayquaza VMAX Alt Art?"
GPT: "Let me analyze the grading ROI for Rayquaza VMAX Alt Art from Evolving Skies:
Grading Costs: ~$25-$50 depending on service level
Analysis:
Recommendation: Only grade if you're confident the card is gem mint (perfect centering, no whitening, no scratches). Check PSA's grading standards and compare your card carefully. If there's any doubt, the card is better sold raw at $280 than risking a PSA 9."
Create a conversation where you list your collection, and the GPT can track total value over time:
You: "Track my portfolio: 1x Charizard VMAX Darkness Ablaze, 2x Pikachu VMAX Vivid Voltage, 1x Umbreon VMAX Alt Art"
GPT: "I'll track your portfolio. Current valuation:
| Card | Quantity | Unit Price | Total Value |
|---|---|---|---|
| Charizard VMAX (DA) | 1 | $147.50 | $147.50 |
| Pikachu VMAX (VV) | 2 | $42.30 | $84.60 |
| Umbreon VMAX Alt Art | 1 | $425.00 | $425.00 |
Total Portfolio Value: $657.10
I'll remember this portfolio. Ask me to update it anytime to track value changes!"
You: "What are the trending cards this week?"
GPT: (Fetches top cards by price and compares against stored history) "Notable movers this week:
These cards are showing strong upward momentum with increased sales velocity."
If you want to build this functionality into your own app instead of using Custom GPTs:
import openai
import requests
openai.api_key = "your-openai-api-key"
def analyze_card_investment(card_query):
# Get card data from PokemonPriceTracker API
headers = {
'Authorization': 'Bearer your-pokemon-api-key'
}
response = requests.post(
'https://www.pokemonpricetracker.com/api/v2/parse-title',
json={'title': card_query},
headers=headers
)
card_data = response.json()
# Use GPT-4 for analysis
prompt = f"""
Analyze this Pokemon card for investment potential:
Card: {card_data['matches'][0]['card']['name']}
Set: {card_data['matches'][0]['card']['setName']}
Current Price: ${card_data['matches'][0]['card']['prices']['market']}
Rarity: {card_data['matches'][0]['card']['rarity']}
Provide investment analysis considering:
1. Current market conditions
2. Historical price trends
3. Collector demand
4. Long-term potential
"""
completion = openai.ChatCompletion.create(
model="gpt-4",
messages=[
{"role": "system", "content": "You are a Pokemon card investment analyst."},
{"role": "user", "content": prompt}
]
)
return completion.choices[0].message.content
# Example usage
analysis = analyze_card_investment("Charizard VMAX Darkness Ablaze")
print(analysis)
limit you ask for)Free Tier:
Pro Setup (for power users):
Planning to monetize? The $9.99 API plan covers personal and hobby use. If your GPT earns money — GPT Store revenue, subscriptions, ads or sponsorship — you need a Business plan. See Licensing & Commercial Use.
Q: Can I share my custom GPT publicly? A: Yes, you can make it public. Note that monetizing it — through the GPT Store or otherwise — is commercial use and requires a Business plan. Sharing a free GPT is fine on any plan. See Licensing & Commercial Use.
Q: Will my API key be visible to users? A: No, API keys are securely stored by OpenAI and not visible to GPT users.
Q: Can the GPT access my collection data? A: Only within a conversation session. It doesn't have persistent storage across chats.
Q: How accurate are the investment recommendations? A: The GPT uses real market data but cannot predict future prices. Always do your own research.
Q: Can I use this for commercial purposes? A: Yes, on a Business plan. Commercial use of PokemonPriceTracker data — anything that generates revenue, including advertising — requires Business or Enterprise. Free and API plans are for personal, hobby and development use. Reselling the data or building a competing price API is not permitted on any plan. See Licensing & Commercial Use, and check OpenAI's terms separately.
Now that you have a working Pokemon card analysis GPT, you can:
Ready to build your custom GPT? Get your free API key and start creating:
Questions or need help? Join our Discord community or contact us at [email protected].
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Team
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