Stock Screener (by Exchange & Market Cap)

{
  "type": "object",
  "anyOf": [
    {
      "required": [
        "market_cap"
      ]
    },
    {
      "required": [
        "exchange"
      ]
    }
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "description": "Max results to return."
    },
    "offset": {
      "type": "integer",
      "description": "Offset for pagination."
    },
    "exchange": {
      "type": "string",
      "description": "Exchange filter: NASDAQ, NYSE, AMEX."
    },
    "market_cap": {
      "type": "string",
      "description": "Market cap filter: mega, large, mid, small, micro, nano."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "data": {
      "type": "object",
      "properties": {
        "screener": {
          "type": "object",
          "properties": {
            "asof": {
              "type": "string",
              "description": "Human-readable as-of label, e.g. 'Last price as of Sep 4, 2026'."
            },
            "table": {
              "type": "object",
              "properties": {
                "rows": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "url": {
                        "type": "string",
                        "description": "Relative path (not an absolute URL) to the stock's detail page on the vendor's own site, e.g. '/market-activity/stocks/nvda'."
                      },
                      "name": {
                        "type": "string",
                        "description": "The company's listed name, e.g. 'NVIDIA Corporation Common Stock'."
                      },
                      "symbol": {
                        "type": "string",
                        "description": "Ticker symbol, e.g. 'NVDA'."
                      },
                      "lastsale": {
                        "type": "string",
                        "description": "Formatted price string, e.g. '$230.36'."
                      },
                      "marketCap": {
                        "type": "string",
                        "description": "Comma-formatted market cap in dollars, e.g. '5,551,676,000,000'."
                      },
                      "netchange": {
                        "type": "string",
                        "description": "Net change as a numeric string, e.g. '1.91' or '-8.24'."
                      },
                      "pctchange": {
                        "type": "string",
                        "description": "Percent change as a formatted string, e.g. '0.836%'."
                      }
                    },
                    "additionalProperties": true
                  },
                  "description": "One entry per matching stock on this page. Absent when the requested offset is past the last page of results (amex-nano-cap-empty-page.json), not an error condition."
                }
              },
              "description": "Absent (or `{}`) on an offset past the last matching page -- confirmed on amex-nano-cap-empty-page.json, where the underlying rows/headers came back null rather than an error.",
              "additionalProperties": true
            },
            "totalrecords": {
              "type": "number",
              "description": "Total matching records across all pages for the given filters, e.g. 32 for the NASDAQ mega-cap query, 124 for the AMEX nano-cap query -- stays populated even on an offset past the last page."
            }
          },
          "additionalProperties": true
        }
      },
      "additionalProperties": true
    },
    "status": {
      "type": "string",
      "description": "'success' on all three fixtures observed."
    }
  },
  "description": "The screener record, as returned at routing.responseResultPath ($.output).",
  "additionalProperties": true
}