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x402stock Private Stocks (PreStocks) Endpoint
x402
x402stock Private Stocks (PreStocks) Endpoint is a paid API for AI agents from x402stock.xyz, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Returns current pricing, valuation, and supply data for tokenized private company stocks (PreStocks) including Anduril, Anthropic, Kalshi, and other unicorns.
Price / call$0.02
Success—
StatusUnknown
How this service works
Live valuations for private, pre-IPO companies — Anthropic, OpenAI, SpaceX, Anduril, Neuralink, Kalshi, Polymarket — in one call, via PreStocks Solana tokens backed 1:1 by SPV exposure. Per company: mark price and valuation, on-chain token price and implied valuation, the token's premium/discount, supply, and contract. The catalog's only pre-IPO feed. From x402stock
Output
A JSON object with an as_of timestamp, count of companies, venue ('prestocks'), source ('x402stock'), and an array of company objects each containing: symbol, name, URL, logo URL, description, supply, mark price, token price, mark valuation, implied valuation, token premium percent, and Solana contract address.
Example use cases
Example prompt
“What are the current PreStocks prices for private companies like Anthropic and Anduril — including their mark price, implied valuation, and token premium percent?”
Technical details
Endpoint
GEThttps://x402stock.xyz/api/v1/private-stocksWhen to prefer
Use this endpoint when you need real-time pricing and valuation data for tokenized private company stocks (PreStocks) on Solana, specifically when interested in unicorns like Anthropic, Anduril, Kalshi, and similar pre-IPO companies. Prefer this over public stock endpoints when the target company is private and not listed on traditional exchanges.
Side effects
- Payment not received or insufficient USDC — returns 402 Payment Required
- Invalid or unsupported properties filter — may return empty or error
- Upstream PreStocks data unavailable — may return stale or empty data
- Network timeout to x402stock.xyz — returns connection error
- Malformed request parameters — returns 400 Bad Request
Input
{
"properties": "price,volume,marketCap"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
{
"as_of": "2026-06-18T06:23:38.648Z",
"count": 7,
"venue": "prestocks",
"source": "x402stock",
"companies": [
{
"url": "https://www.prestocks.com/anduril",
"name": "Anduril PreStocks",
"supply": 14390.746421,
"symbol": "ANDURIL",
"logo_url": "https://www.prestocks.com/logos/anduril.png",
"mark_price": 121.22,
"description": "Anduril builds AI-driven defense systems, including autonomous drones and perimeter sensors. Their platforms integrate real-time data and computer vision to enhance situational awareness for military and border security applications.\n\nANDURIL is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 94.7254,
"mark_valuation": 98526582278,
"contract_address": "PresTj4Yc2bAR197Er7wz4UUKSfqt6FryBEdAriBoQB",
"implied_valuation": 76992003983,
"token_premium_percent": -21.86
},
{
"url": "https://www.prestocks.com/anthropic",
"name": "Anthropic PreStocks",
"supply": 9554.903325,
"symbol": "ANTHROPIC",
"logo_url": "https://www.prestocks.com/logos/anthropic.png",
"mark_price": 832.29,
"description": "Anthropic is an AI research company developing Claude, a language model built with a strong focus on safety and interpretability. Their approach emphasizes ethical guardrails and transparent behavior to reduce the risk of harmful outputs while enabling sophisticated natural language capabilities.\n\nANTHROPIC is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 654.704,
"mark_valuation": 1363575915519,
"contract_address": "Pren1FvFX6J3E4kXhJuCiAD5aDmGEb7qJRncwA8Lkhw",
"implied_valuation": 1072629291895,
"token_premium_percent": -21.34
},
{
"url": "https://www.prestocks.com/kalshi",
"name": "Kalshi PreStocks",
"supply": 1311.997612,
"symbol": "KALSHI",
"logo_url": "https://www.prestocks.com/logos/kalshi.png",
"mark_price": 603.4,
"description": "Kalshi is a CFTC-regulated prediction market where users trade event contracts on real-world outcomes. Contract prices reflect implied probabilities for events across politics, economics, sports, and more.\n\nKALSHI is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 445.721,
"mark_valuation": 21678097851,
"contract_address": "PreLWGkkeqG1s4HEfFZSy9moCrJ7btsHuUtfcCeoRua",
"implied_valuation": 16013232278,
"token_premium_percent": -26.13
},
{
"url": "https://www.prestocks.com/neuralink",
"name": "Neuralink PreStocks",
"supply": 4995.998184,
"symbol": "NEURALINK",
"logo_url": "https://www.prestocks.com/logos/neuralink.png",
"mark_price": 276.81,
"description": "Neuralink develops implantable brain-computer interfaces designed to enable direct communication between the human brain and computers. Their technology aims to treat neurological conditions and eventually augment human capabilities.\n\nNEURALINK is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 227.6508,
"mark_valuation": 52895376238,
"contract_address": "PrekqLJvJ3qVdXmBGDiexvwUTF4rLFDa6HWS4HJbw9S",
"implied_valuation": 43501579616,
"token_premium_percent": -17.76
},
{
"url": "https://www.prestocks.com/openai",
"name": "OpenAI PreStocks",
"supply": 2002.85147,
"symbol": "OPENAI",
"logo_url": "https://www.prestocks.com/logos/openai.png",
"mark_price": 1348.43,
"description": "OpenAI pioneers large-language models like GPT and DALL·E, enabling advanced AI applications. Their research emphasizes both cutting-edge capability and responsible deployment strategies.\n\nOPENAI is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 876.762,
"mark_valuation": 1124131467710,
"contract_address": "PreweJYECqtQwBtpxHL171nL2K6umo692gTm7Q3rpgF",
"implied_valuation": 730920952131,
"token_premium_percent": -34.98
},
{
"url": "https://www.prestocks.com/polymarket",
"name": "Polymarket PreStocks",
"supply": 4818.978542,
"symbol": "POLYMARKET",
"logo_url": "https://www.prestocks.com/logos/polymarket.png",
"mark_price": 147.5,
"description": "Polymarket is a decentralized prediction market for real-world events. It leverages blockchain technology and market-driven pricing to provide real-time implied probabilities across politics, economics, sports, and more.\n\nPOLYMARKET is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 126.2807,
"mark_valuation": 12806289794,
"contract_address": "Pre8AREmFPtoJFT8mQSXQLh56cwJmM7CFDRuoGBZiUP",
"implied_valuation": 10963980587,
"token_premium_percent": -14.39
},
{
"url": "https://www.prestocks.com/spacex",
"name": "SpaceX PreStocks",
"supply": 43713.420235,
"symbol": "SPACEX",
"logo_url": "https://www.prestocks.com/logos/spacex.png",
"mark_price": 188.5352,
"description": "SpaceX engineers reusable launch vehicles and the Starlink satellite constellation for global broadband. Their focus on rapid reusability and vertical integration drives down launch costs and accelerates space access.\n\nSPACEX is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 125.0492,
"mark_valuation": 2471906054261,
"contract_address": "PreANxuXjsy2pvisWWMNB6YaJNzr7681wJJr2rHsfTh",
"implied_valuation": 1639533619050,
"token_premium_percent": -33.67
}
],
"attribution": "Source: PreStocks (prestocks.com) — Solana tokens backed 1:1 by SPV exposure to the underlying private company"
}Schema · Response
{
"type": "json",
"example": {
"as_of": "2026-06-06T00:27:47.493Z",
"count": 7,
"venue": "prestocks",
"source": "x402stock",
"companies": [
{
"url": "https://www.prestocks.com/anduril",
"name": "Anduril PreStocks",
"supply": 14390.747182,
"symbol": "ANDURIL",
"logo_url": "https://www.prestocks.com/logos/anduril.png",
"mark_price": 127.64,
"description": "Anduril builds AI-driven defense systems, including autonomous drones and perimeter sensors. Their platforms integrate real-time data and computer vision to enhance situational awareness for military and border security applications.\n\nANDURIL is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 122.968,
"mark_valuation": 103744703531,
"contract_address": "PresTj4Yc2bAR197Er7wz4UUKSfqt6FryBEdAriBoQB",
"implied_valuation": 99947316150,
"token_premium_percent": -3.66
},
{
"url": "https://www.prestocks.com/anthropic",
"name": "Anthropic PreStocks",
"supply": 9554.916082,
"symbol": "ANTHROPIC",
"logo_url": "https://www.prestocks.com/logos/anthropic.png",
"mark_price": 1023.25,
"description": "Anthropic is an AI research company developing Claude, a language model built with a strong focus on safety and interpretability. Their approach emphasizes ethical guardrails and transparent behavior to reduce the risk of harmful outputs while enabling sophisticated natural language capabilities.\n\nANTHROPIC is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 901.4462,
"mark_valuation": 1676433761736,
"contract_address": "Pren1FvFX6J3E4kXhJuCiAD5aDmGEb7qJRncwA8Lkhw",
"implied_valuation": 1476877462885,
"token_premium_percent": -11.9
},
{
"url": "https://www.prestocks.com/kalshi",
"name": "Kalshi PreStocks",
"supply": 1476.997906,
"symbol": "KALSHI",
"logo_url": "https://www.prestocks.com/logos/kalshi.png",
"mark_price": 604.24,
"description": "Kalshi is a CFTC-regulated prediction market where users trade event contracts on real-world outcomes. Contract prices reflect implied probabilities for events across politics, economics, sports, and more.\n\nKALSHI is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 511.8646,
"mark_valuation": 21708276177,
"contract_address": "PreLWGkkeqG1s4HEfFZSy9moCrJ7btsHuUtfcCeoRua",
"implied_valuation": 18389542280,
"token_premium_percent": -15.29
},
{
"url": "https://www.prestocks.com/neuralink",
"name": "Neuralink PreStocks",
"supply": 4995.999226,
"symbol": "NEURALINK",
"logo_url": "https://www.prestocks.com/logos/neuralink.png",
"mark_price": 282.23,
"description": "Neuralink develops implantable brain-computer interfaces designed to enable direct communication between the human brain and computers. Their technology aims to treat neurological conditions and eventually augment human capabilities.\n\nNEURALINK is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 300.1132,
"mark_valuation": 53931079208,
"contract_address": "PrekqLJvJ3qVdXmBGDiexvwUTF4rLFDa6HWS4HJbw9S",
"implied_valuation": 57348355821,
"token_premium_percent": 6.34
},
{
"url": "https://www.prestocks.com/openai",
"name": "OpenAI PreStocks",
"supply": 2002.908181,
"symbol": "OPENAI",
"logo_url": "https://www.prestocks.com/logos/openai.png",
"mark_price": 1527.04,
"description": "OpenAI pioneers large-language models like GPT and DALL·E, enabling advanced AI applications. Their research emphasizes both cutting-edge capability and responsible deployment strategies.\n\nOPENAI is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 1331.9607,
"mark_valuation": 1273031389432,
"contract_address": "PreweJYECqtQwBtpxHL171nL2K6umo692gTm7Q3rpgF",
"implied_valuation": 1110401674929,
"token_premium_percent": -12.77
},
{
"url": "https://www.prestocks.com/polymarket",
"name": "Polymarket PreStocks",
"supply": 4818.988067,
"symbol": "POLYMARKET",
"logo_url": "https://www.prestocks.com/logos/polymarket.png",
"mark_price": 147.94,
"description": "Polymarket is a decentralized prediction market for real-world events. It leverages blockchain technology and market-driven pricing to provide real-time implied probabilities across politics, economics, sports, and more.\n\nPOLYMARKET is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 147.6774,
"mark_valuation": 12844491607,
"contract_address": "Pre8AREmFPtoJFT8mQSXQLh56cwJmM7CFDRuoGBZiUP",
"implied_valuation": 12821691278,
"token_premium_percent": -0.18
},
{
"url": "https://www.prestocks.com/spacex",
"name": "SpaceX PreStocks",
"supply": 8742.928256,
"symbol": "SPACEX",
"logo_url": "https://www.prestocks.com/logos/spacex.png",
"mark_price": 795.49,
"description": "SpaceX engineers reusable launch vehicles and the Starlink satellite constellation for global broadband. Their focus on rapid reusability and vertical integration drives down launch costs and accelerates space access.\n\nSPACEX is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"token_price": 701.0533,
"mark_valuation": 2085951555556,
"contract_address": "PreANxuXjsy2pvisWWMNB6YaJNzr7681wJJr2rHsfTh",
"implied_valuation": 1838317496767,
"token_premium_percent": -11.87
}
],
"attribution": "Source: PreStocks (prestocks.com) — Solana tokens backed 1:1 by SPV exposure to the underlying private company"
}
}Tags
x402
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