# x402stock Private Stocks (PreStocks) Endpoint

> 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.

## Facts

- Endpoint: GET https://x402stock.xyz/api/v1/private-stocks
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402stock-private-stocks-prestocks-endpoint-da7f0da5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_V8nerkk_Tu04i9j2R4XO0

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 x402stock-private-stocks-prestocks-endpoint-da7f0da5
```

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?

## When to prefer this

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.

## Known failure modes

- 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

## 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 request

```json
{
 "properties": "price,volume,marketCap"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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": 2170
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402stock-private-stocks-prestocks-endpoint-da7f0da5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402stock.xyz](https://www.zero.xyz/host/x402stock.xyz/llms.txt)