Polygon Io

Grouped Daily

grouped_daily

Read-onlyIdempotent

Fetch OHLCV bars for all US stocks on a given date (YYYY-MM-DD) from Massive (formerly Polygon.io) in a single call; useful for market-wide snapshot or screening.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`date`	Yes
`adjusted`	No

Output Schema

TableJSON Schema

Name	Required	Description
`count`	No	Number of results
`status`	No	API response status
`results`	No	Daily data for all tickers
`field_legend`	No	Legend for the single-letter OHLC bar keys (o/h/l/c/v/vw/n/t).

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 8, 2026

changedInput schema / examples

Previous value: -[
-  {
-    "date": "2024-01-15"
-  }
-]New value: +[
+  {
+    "date": "2026-09-25"
+  }
+]

Changed2 schema fields changedJul 27, 2026

addedOutput schema / properties / field_legend

Added value: +{
+  "description": "Legend for the single-letter OHLC bar keys (o/h/l/c/v/vw/n/t).",
+  "type": "object"
+}

addedOutput schema / properties / results / items / properties / date

Added value: +{
+  "description": "Bar start as an ISO 8601 timestamp (derived from `t`).",
+  "type": "string"
+}

Changed2 schema fields changedMay 27, 2026

addedInput schema / examples

Added value: +[
+  {
+    "date": "2024-01-15"
+  }
+]

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "count": {
+      "description": "Number of results",
+      "type": "number"
+    },
+    "results": {
+      "description": "Daily data for all tickers",
+      "items": {
+        "properties": {
+          "T": {
+            "description": "Ticker symbol",
+            "type": "string"
+          },
+          "c": {
+            "description": "Close price",
+            "type": "number"
+          },
+          "h": {
+            "description": "High price",
+            "type": "number"
+          },
+          "l": {
+            "description": "Low price",
+            "type": "number"
+          },
+          "n": {
+            "description": "Number of transactions",
+            "type": "number"
+          },
+          "o": {
+            "description": "Open price",
+            "type": "number"
+          },
+          "t": {
+            "description": "Timestamp",
+            "type": "number"
+          },
+          "v": {
+            "description": "Volume",
+            "type": "number"
+          },
+          "vw": {
+            "description": "Volume weighted average",
+            "type": "number"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "status": {
+      "description": "API response status",
+      "type": "string"
+    }
+  },
+  "type": "object"
+}

First observedMay 20, 2026

TDQS

Score is being calculated.

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