Unnamed service

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

Resource: x402stock.xyz/api/v1/private-stocks

Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0x3070Fbb3803819fB5BdfE9286fdc6325A877fA85

Payment methods: — · Last validation: 2026-09-13 23:28:06.985+00

{
  "input": {
    "type": "object",
    "required": [
      "type",
      "method"
    ],
    "properties": {
      "type": {
        "type": "string",
        "const": "http"
      },
      "method": {
        "enum": [
          "GET",
          "HEAD",
          "DELETE"
        ],
        "type": "string"
      },
      "queryParams": {
        "type": "object",
        "properties": {}
      }
    },
    "additionalProperties": false
  },
  "output": {
    "type": "object",
    "required": [
      "type"
    ],
    "properties": {
      "type": {
        "type": "string"
      },
      "example": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "source",
          "as_of",
          "venue",
          "count",
          "companies",
          "attribution"
        ],
        "properties": {
          "as_of": {
            "type": "string",
            "description": "ISO 8601 timestamp when this response was generated."
          },
          "count": {
            "type": "number",
            "description": "Number of companies in `companies`."
          },
          "venue": {
            "type": "string",
            "description": "Issuing venue for the tokens — always 'prestocks'."
          },
          "source": {
            "type": "string",
            "const": "x402stock"
          },
          "companies": {
            "type": "array",
            "items": {
              "type": "object",
              "required": [
                "symbol",
                "name",
                "description",
                "mark_price",
                "mark_valuation",
                "token_price",
                "implied_valuation",
                "token_premium_percent",
                "supply",
                "contract_address",
                "logo_url",
                "url"
              ],
              "properties": {
                "url": {
                  "anyOf": [
                    {
                      "type": "string"
                    },
                    {
                      "type": "null"
                    }
                  ],
                  "description": "PreStocks company page URL."
                },
                "name": {
                  "type": "string",
                  "description": "PreStocks token name, e.g. 'Anthropic PreStocks'."
                },
                "supply": {
                  "anyOf": [
                    {
                      "type": "number"
                    },
                    {
                      "type": "null"
                    }
                  ],
                  "description": "Circulating token supply."
                },
                "symbol": {
                  "type": "string",
                  "description": "PreStocks token symbol, e.g. ANTHROPIC, OPENAI, SPACEX. Use as the {symbol} path param."
                },
                "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 — the underlying private company's marked value. NOT a last-trade price."
                },
                "description": {
                  "type": "string",
                  "description": "Plain-language overview of the underlying private company, plus the token's 1:1 SPV-backing note."
                },
                "token_price": {
                  "anyOf": [
                    {
                      "type": "number"
                    },
                    {
                      "type": "null"
                    }
                  ],
                  "description": "Current on-chain token trading price in USD. Can diverge from mark_price — that gap is the premium/discount."
                },
                "mark_valuation": {
                  "anyOf": [
                    {
                      "type": "number"
                    },
                    {
                      "type": "null"
                    }
                  ],
                  "description": "Company valuation in USD implied by the SPV mark (mark_price basis)."
                },
                "contract_address": {
                  "anyOf": [
                    {
                      "type": "string"
                    },
                    {
                      "type": "null"
                    }
                  ],
                  "description": "Solana mint address of the PreStocks SPV token."
                },
                "implied_valuation": {
                  "anyOf": [
                    {
                      "type": "number"
                    },
                    {
                      "type": "null"
                    }
                  ],
                  "description": "Company valuation in USD implied by the on-chain token_price."
                },
                "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."
                }
              },
              "additionalProperties": false
            },
            "description": "Every PreStocks private company, most-valuable first."
          },
          "attribution": {
            "type": "string",
            "description": "Required source-attribution string; pass through to end users."
          }
        },
        "additionalProperties": false
      }
    }
  },
  "paymentRequirements": [
    {
      "raw": {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x3070Fbb3803819fB5BdfE9286fdc6325A877fA85",
        "amount": "20000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x3070Fbb3803819fB5BdfE9286fdc6325A877fA85",
      "scheme": "exact",
      "network": "eip155:8453",
      "amountAtomic": "20000"
    }
  ]
}

Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.