`get_distribution`

Get the fitted risk-neutral distribution for one symbol and expiry as (strike, cdf) pairs, where cdf is P(S_T <= strike).

Scope: ladder:read

Input

Name	Type	Required	Description
`symbol`	`string`	Required	Underlying ticker, uppercase.pattern ^[A-Z]{1,6}$
`expiry`	`string (date)`	Required	Expiry as YYYY-MM-DD.

JSON Schema

input_schema

{
  "type": "object",
  "properties": {
    "symbol": {
      "type": "string",
      "pattern": "^[A-Z]{1,6}$",
      "description": "Underlying ticker, uppercase."
    },
    "expiry": {
      "type": "string",
      "format": "date",
      "description": "Expiry as YYYY-MM-DD."
    }
  },
  "required": [
    "symbol",
    "expiry"
  ],
  "additionalProperties": false
}

Example

Request

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_distribution",
    "arguments": {
      "symbol": "SPY",
      "expiry": "2026-10-23"
    }
  }
}

Result

{
  "symbol": "SPY",
  "expiry": "2026-10-23",
  "snapshot_id": "spy-2026-10-23-1760641500000",
  "points": [
    {
      "strike": 575,
      "cdf": 0.26
    },
    {
      "strike": 580,
      "cdf": 0.41
    },
    {
      "strike": 585,
      "cdf": 0.59
    },
    {
      "strike": 590,
      "cdf": 0.75
    }
  ]
}