Get SPAN File Rows

getSpanRows

get/span/rows

Base URL: https://api.cert.tastyworks.com (Sandbox) · https://api.tastyworks.com (Production)

Returns paginated raw rows from the SPAN risk file published by a futures exchange (CME or CFE) for a specific date. SPAN is the risk-array methodology used to compute margin on futures and future options; use these rows to load or audit the source data behind futures margin calculations.

Code samples

curl -X GET 'https://api.cert.tastyworks.com/span/rows?date=2024-01-15&exchange=CME&page-offset=10&per-page=10' \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
  -H 'User-Agent: tastytrade-docs-example/1.0'

import requests

url = "https://api.cert.tastyworks.com/span/rows?date=2024-01-15&exchange=CME&page-offset=10&per-page=10"
headers = {
    "Authorization": "Bearer YOUR_ACCESS_TOKEN",
    "User-Agent": "tastytrade-docs-example/1.0",
}
resp = requests.get(url, headers=headers)
print(resp.status_code, resp.json())

const resp = await fetch("https://api.cert.tastyworks.com/span/rows?date=2024-01-15&exchange=CME&page-offset=10&per-page=10", {
  method: "GET",
  headers: {
    "Authorization": "Bearer YOUR_ACCESS_TOKEN",
    "User-Agent": "tastytrade-docs-example/1.0",
  },
})
const data = await resp.json()
console.log(resp.status, data)

package main

import (
	"net/http"
	"io"
	"fmt"
)

func main() {
	req, _ := http.NewRequest("GET", "https://api.cert.tastyworks.com/span/rows?date=2024-01-15&exchange=CME&page-offset=10&per-page=10", nil)
	req.Header.Set("Authorization", "Bearer YOUR_ACCESS_TOKEN")
	req.Header.Set("User-Agent", "tastytrade-docs-example/1.0")
	resp, _ := http.DefaultClient.Do(req)
	defer resp.Body.Close()
	out, _ := io.ReadAll(resp.Body)
	fmt.Println(resp.Status, string(out))
}

import java.net.URI;
import java.net.http.*;

HttpClient client = HttpClient.newHttpClient();
HttpRequest req = HttpRequest.newBuilder()
    .uri(URI.create("https://api.cert.tastyworks.com/span/rows?date=2024-01-15&exchange=CME&page-offset=10&per-page=10"))
    .header("Authorization", "Bearer YOUR_ACCESS_TOKEN")
    .header("User-Agent", "tastytrade-docs-example/1.0")
    .method("GET", HttpRequest.BodyPublishers.noBody())
    .build();
HttpResponse<String> resp = client.send(req, HttpResponse.BodyHandlers.ofString());
System.out.println(resp.statusCode() + " " + resp.body());

Parameters

Name	In	Type	Description
date*	query	string	The date of the SPAN file e.g. "2024-01-15"
exchange*	query	string	Exchange source of the SPAN file enum: CME, CFE e.g. "CME"
page-offset	query	integer	e.g. 10
per-page	query	integer	e.g. 10

Responses

200A paginated array of SPAN file rows for the requested date and exchange.application/json

Example response

{
  "data": {
    "items": [
      {
        "file-date": "2026-06-08",
        "row-index": 0,
        "exchange": "CME",
        "row-data": "0CME 20260608"
      }
    ]
  },
  "context": "/span/rows",
  "pagination": {
    "per-page": 0,
    "page-offset": 0,
    "item-offset": 0,
    "total-items": 0,
    "total-pages": 0,
    "current-item-count": 0
  }
}

Schema

datarequiredobject
- itemsrequiredarray<object>{4 fields}
contextrequiredstring
example: "/span/rows"
paginationobject
Paging metadata, present on paginated list responses.
- per-pageinteger
- page-offsetinteger
- item-offsetinteger
- total-itemsinteger
- total-pagesinteger
- current-item-countinteger

401Missing or expired access token. Tokens last 15 minutes and must be sent on every request. Note: a missing or malformed `User-Agent` header also produces a 401, but it is returned as an HTML error page from the proxy layer rather than this JSON error body.application/json

Example response

{
  "error": {
    "code": "unauthorized",
    "message": "No valid access token was provided; access tokens expire after 15 minutes."
  }
}

Schema

errorrequiredobject
- coderequiredstring
  Machine-readable error code (see the Error reference).
- messagerequiredstring
  Human-readable explanation.
- errorsarray<object>{3 fields}
  Present for multi-error / validation failures; one entry per problem.

422Invalid query parameters, for example a malformed `date`, an `exchange` outside the allowed set, or a `per-page` value beyond the permitted range.application/json

Example response

{
  "error": {
    "code": "preflight_check_failure",
    "message": "One or more preflight checks failed",
    "errors": [
      {
        "code": "preflight_check_failure",
        "message": "A specific validation failed for this order."
      }
    ]
  }
}

Schema

errorrequiredobject
- coderequiredstring
  Machine-readable error code (see the Error reference).
- messagerequiredstring
  Human-readable explanation.
- errorsarray<object>{3 fields}
  Present for multi-error / validation failures; one entry per problem.

429Rate limit exceeded. Back off exponentially and reduce the request rate.application/json

Example response

{
  "error": {
    "code": "string",
    "message": "string",
    "errors": [
      {
        "code": "string",
        "message": "string",
        "domain": "string"
      }
    ]
  }
}

Schema

errorrequiredobject
- coderequiredstring
  Machine-readable error code (see the Error reference).
- messagerequiredstring
  Human-readable explanation.
- errorsarray<object>{3 fields}
  Present for multi-error / validation failures; one entry per problem.

Rate-limit class: read · idempotent — Rate limits & backoff
Error reference — codes, causes, and fixes

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Get SPAN File Rows

Code samples

Parameters

Responses

Related