Live valuations for private, pre-IPO companies — Anthropic, OpenAI, SpaceX, Andu

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

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Endpoint

GET https://x402stock.xyz/api/v1/private-stocks

Our checks, last 30 days

Example input (from the provider)

{
  "method": "GET",
  "queryParams": {},
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET",
            "HEAD",
            "DELETE"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {},
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "as_of": {
              "description": "ISO 8601 timestamp when this response was generated.",
              "type": "string"
            },
            "attribution": {
              "description": "Required source-attribution string; pass through to end users.",
              "type": "string"
            },
            "companies": {
              "description": "Every PreStocks private company, most-valuable first.",
              "items": {
                "additionalProperties": false,
                "properties": {
                  "contract_address": {
                    "anyOf": [
                      {
                        "type": "string"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "description": "Solana mint address of the PreStocks SPV token."
                  },
                  "description": {
                    "description": "Plain-language overview of the underlying private company, plus the token's 1:1 SPV-backing note.",
                    "type": "string"
                  },
                  "implied_valuation": {
                    "anyOf": [
                      {
                        "type": "number"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "description": "Company valuation in USD implied by the on-chain token_price."
                  },
                  "logo_url": {
                    "anyOf": [
                      {
                        "type": "string"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "description": "Company logo image URL."
                  },
                  "mark_price": {
                    "anyOf": [
                      {
                        "type": "number"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "description": "SPV mark price per token in USD \u2014 the underlying private company's marked value. NOT a last-trade price."
                  },
                  "mark_valuation": {
                    "anyOf": [
                      {
                        "type": "number"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "description": "Company valuation in USD implied by the SPV mark (mark_price basis)."
                  },
                  "name": {
                    "description": "PreStocks token name, e.g. 'Anthropic PreStocks'.",
                    "type": "string"
                  },
                  "supply": {
                    "anyOf": [
                      {
                        "type": "number"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "description": "Circulating token supply."
                  },
                  "symbol": {
                    "description": "PreStocks token symbol, e.g. ANTHROPIC, OPENAI, SPACEX. Use as the {symbol} path param.",
                    "type": "string"
                  },
                  "token_premium_percent": {
                    "anyOf": [
                      {
                        "type": "number"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "description": "token_price vs mark_price, in percent. Positive = token trades at a premium to the SPV mark; negative = discount."
                  },
                  "token_price": {
                    "anyOf": [
                      {
                        "type": "number"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "description": "Current on-chain token trading price in USD. Can diverge from mark_price \u2014 that gap is the premium/discount."
                  },
                  "url": {
                    "anyOf": [
                      {
                        "type": "string"
                      },
                      {
                        "type": "null"
                      }
                    ],
                    "description": "PreStocks company page URL."
                  }
                },
                "required": [
                  "symbol",
                  "name",
                  "description",
                  "mark_price",
                  "mark_valuation",
                  "token_price",
                  "implied_valuation",
                  "token_premium_percent",
                  "supply",
                  "contract_address",
                  "logo_url",
                  "url"
                ],
                "type": "object"
              },
              "type": "array"
            

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