# GamePulse Trading Card Portfolio Valuation

> GamePulse Trading Card Portfolio Valuation is a paid API for AI agents from gamepulse-zeta.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Returns current market value of a trading card portfolio across Pokemon, MTG, sports cards, and other collectible card games

## Facts

- Endpoint: GET https://gamepulse-zeta.vercel.app/api/cards/portfolio
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gamepulse-trading-card-portfolio-valuation-d2435e0c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bnJTnmXPp_vLWgkgVxAr6

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 gamepulse-trading-card-portfolio-valuation-d2435e0c
```

Example prompt: Can you calculate the current total market value of my trading card portfolio? I have a mix of Pokemon cards (Charizard Base Set Holo, PSA 9), MTG (Black Lotus, Unlimited Edition, ungraded), and a 2018 Topps Mike Trout rookie, and I want to know what the whole collection is worth right now.

## When to prefer this

Use this endpoint when a user wants an aggregated valuation of multiple trading cards across their entire portfolio, rather than pricing a single card. Prefer this over the single-card pricing endpoint when the goal is total collection worth or investment tracking across multiple cards or game types.

## Known failure modes

- Card not found in database — unknown or misidentified card name/set returns an error or null value
- Invalid game type or card set specified returns a 400 error
- Portfolio input malformed or missing required card identifiers returns a validation error
- Market data temporarily unavailable for a specific card game category returns partial results
- Rate limiting or payment failure returns a 402 or 429 error

## How this service works

Trading card portfolio valuation for card-collector and card-investor agents. Returns current market value across Pokemon, MTG, sports cards, and more.

## Output

Returns an aggregated portfolio valuation including the current market value of each card in the portfolio, total portfolio worth, and individual card pricing data across Pokemon, MTG, sports cards, and other collectible card games.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "cards"
     ],
     "properties": {
      "lang": {
       "type": "string",
       "description": "Response language (default en)"
      },
      "cards": {
       "type": "string",
       "description": "Comma-separated card list"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "errors": {
     "type": "object",
     "description": "Documented error responses, keyed by HTTP status code",
     "additionalProperties": {
      "type": "object",
      "required": [
       "description"
      ],
      "properties": {
       "example": {
        "type": "object"
       },
       "description": {
        "type": "string"
       }
      }
     }
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gamepulse-trading-card-portfolio-valuation-d2435e0c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gamepulse-zeta.vercel.app](https://www.zero.xyz/host/gamepulse-zeta.vercel.app/llms.txt)