PunkPredictor Fair Price Plus

x402

PunkPredictor Fair Price Plus is a paid API for AI agents from api.punkpredictor.xyz, paid per call via x402, $10/call, status unknown (last checked 2026-10-13).

Returns a CryptoPunk's fair value in ETH along with uncertainty score and confidence intervals for a given punk ID

Price / call$10

Seller volume →—

Success—

StatusUnknown

How this service works

Punk fair value plus distribution, uncertainty, and intervals

Output

A JSON object containing the punk's ID, its fair price in ETH (fair_price_eth), an uncertainty_score between 0 and 1 indicating model confidence, and an intervals object with lower and upper bound prices in ETH at one or more confidence levels (e.g. 80% interval).

Example use cases

Pre-purchase valuation due diligence

“Before I make an offer on CryptoPunk #1087, can you tell me its fair value in ETH, the uncertainty around that estimate, and the 80% confidence price range so I don't overpay?”

Seller listing price decision

“I own CryptoPunk #7804 and want to list it — what does PunkPredictor say its fair value is, and how tight are the price confidence intervals right now?”

Arbitrage opportunity screening

“I spotted CryptoPunk #312 listed for 18 ETH — what's PunkPredictor's fair price estimate and uncertainty score for it so I can tell if that's a good deal?”

Technical details

Endpoint

POSThttps://api.punkpredictor.xyz/agents/v2/fair-price-plus?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need not just a point estimate but also a full distributional picture of a CryptoPunk's value — including uncertainty score and confidence intervals — rather than a bare fair-value figure. It is ideal for risk-aware buying, selling decisions, or arbitrage screening where knowing the reliability of the estimate matters as much as the estimate itself.

Side effects

Invalid punk ID (outside 0–9999 range) returns a validation error
Payment of $10 USDC not completed results in a 402 Payment Required response
Network or upstream model timeout may return a 503
Missing or malformed request body returns a 400 Bad Request

Input

Schema · Request body

Field	Type	Description
id_punk	integer

Output

Schema · Response

{
  "type": "json",
  "example": {
    "id_punk": 5822,
    "intervals": {
      "80": {
        "lower": 24.4,
        "upper": 33.1
      }
    },
    "fair_price_eth": 28.74,
    "uncertainty_score": 0.22
  }
}

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How this service works

Punk fair value plus distribution, uncertainty, and intervals

Output

Example use cases

Pre-purchase valuation due diligence

“Before I make an offer on CryptoPunk #1087, can you tell me its fair value in ETH, the uncertainty around that estimate, and the 80% confidence price range so I don't overpay?”

Seller listing price decision

“I own CryptoPunk #7804 and want to list it — what does PunkPredictor say its fair value is, and how tight are the price confidence intervals right now?”

Arbitrage opportunity screening

“I spotted CryptoPunk #312 listed for 18 ETH — what's PunkPredictor's fair price estimate and uncertainty score for it so I can tell if that's a good deal?”

Technical details

Endpoint

POSThttps://api.punkpredictor.xyz/agents/v2/fair-price-plus?utm_source=zero.xyz

When to prefer

Side effects

Invalid punk ID (outside 0–9999 range) returns a validation error
Payment of $10 USDC not completed results in a 402 Payment Required response
Network or upstream model timeout may return a 503
Missing or malformed request body returns a 400 Bad Request

Input

Schema · Request body

Field	Type	Description
id_punk	integer

Output

Schema · Response

{
  "type": "json",
  "example": {
    "id_punk": 5822,
    "intervals": {
      "80": {
        "lower": 24.4,
        "upper": 33.1
      }
    },
    "fair_price_eth": 28.74,
    "uncertainty_score": 0.22
  }
}