Interactive Brokers API GET /iserver/secdef/info

GET/iserver/secdef/infoversion v1Contracts

Attributes of an instrument, mainly for derivatives: ticker, exchanges, currency, maturity, right and strike.

Risk warning: CFDs and spread bets are complex instruments and come with a high risk of losing money rapidly due to leverage. You can lose money on these products, and each provider publishes its own loss figure under FCA rules. You should consider whether you understand how they work and whether you can afford to take the high risk of losing your money. Automated and API trading can amplify losses through bugs, connectivity failures and runaway orders.

Independent and unofficialinteractivebrokers.comchecked 18 Sep 2026

The reference page marks every query parameter optional; IBKR's Campus page says month, strike and right are required for options.

Parameters

Name	In	Type	Description
conid	query	string	Contract ID. The Campus page describes it as the contract identifier of the underlying.
sectype	query	string	Security type of the requested contract.
month	query	string	Expiration month, for derivatives.
exchange	query	string	Exchange to return information for.
strike	query	string	Strike price, for options.
right	query	string	C for call options, P for put options.

Authentication headers

Name	Type	Description
Authorization	string	OAuth only; the Gateway sends none. On the OAuth host this is the SSO bearer token IBKR's reference lists for this call. With the Client Portal Gateway on your own computer the browser login holds the session. Placeholder only.

Request

Written from the method, path and parameters recorded on this page. No demo host is recorded as a plain address for this API, so the samples read the base address from an environment variable. Not executed against a live or demo account. Credentials are read from environment variables on your own machine and are never entered on this site. The request builder writes these same snippets, from the same record.

Python

# Set IBKR_BASE_URL as an environment variable first. Never paste real values into code.
# No demo host is recorded as a plain address for this API, so the base address is read from IBKR_BASE_URL.
# Optional and not shown: headers Authorization; query parameters conid, sectype, month, exchange, strike, right.
import os
import requests

BASE_URL = os.environ["IBKR_BASE_URL"]
headers = {}
resp = requests.get(BASE_URL + "/iserver/secdef/info", headers=headers, timeout=10)
resp.raise_for_status()
print(resp.json())

JavaScript

// Set IBKR_BASE_URL as an environment variable first. Never paste real values into code.
// No demo host is recorded as a plain address for this API, so the base address is read from IBKR_BASE_URL.
// Optional and not shown: headers Authorization; query parameters conid, sectype, month, exchange, strike, right.
// Run as a module, for example a .mjs file, on a Node version that has fetch built in.
const BASE_URL = process.env.IBKR_BASE_URL;
const res = await fetch(BASE_URL + "/iserver/secdef/info", {
  method: "GET",
  headers: {
  },
});
if (!res.ok) throw new Error(`HTTP ${res.status}`);
console.log(await res.json());

curl

# Set IBKR_BASE_URL as an environment variable first. Never paste real values into code.
# No demo host is recorded as a plain address for this API, so the base address is read from IBKR_BASE_URL.
# Optional and not shown: headers Authorization; query parameters conid, sectype, month, exchange, strike, right.
curl -X GET "$IBKR_BASE_URL/iserver/secdef/info"

Response

A mock response. The values are invented, so check field names against the official reference.

[
  {
    "_mock": true,
    "conid": 100000001,
    "ticker": "AAPL",
    "secType": "OPT",
    "listingExchange": "SMART",
    "exchange": "SMART",
    "companyName": "APPLE INC",
    "currency": "USD",
    "validExchanges": "SMART,CBOE",
    "maturityDate": "20270115",
    "right": "C",
    "strike": 200
  }
]

Response schema, HTTP 200

Every field this site's OpenAPI file for Interactive Brokers declares for this response.

Field	Type	Description
conid	integer	Not recorded
ticker	string	Not recorded
secType	string	Not recorded
listingExchange	string	Not recorded
exchange	string	Not recorded
companyName	string	Not recorded
currency	string	Not recorded
validExchanges	string	Not recorded
priceRendering	string, nullable	Not recorded
maturityDate	string, nullable	Not recorded
right	string	One of: C, P
strike	number	Not recorded

Unverifiedno source opened This schema is not sourced to a page of the provider's own that we opened, so check field names against the official reference.

Limits that apply at Interactive Brokers

Limit	Value	Scope	Source
Global requests a second (Web API)	10	Per authenticated username, that is per Web API session	ibkrcampus.comchecked 12 Oct 2026corroborated by interactivebrokers.com/docs/web-api/trading/usage-and-availability/pacing-limitations
Historical market data requests	Either 10 req/s or 50 req/minute, as the page words it	GET /iserver/marketdata/history only	interactivebrokers.comchecked 12 Oct 2026corroborated by ibkrcampus.com/campus/ibkr-api-page/webapi-doc/
Market data snapshot requests a second	10	GET /iserver/marketdata/snapshot only	interactivebrokers.comchecked 12 Oct 2026corroborated by ibkrcampus.com/campus/ibkr-api-page/webapi-doc/
Order and trade list requests	1 req/5 s	GET /iserver/orders and GET /iserver/trades, each counted on its own	interactivebrokers.comchecked 12 Oct 2026corroborated by ibkrcampus.com/campus/ibkr-api-page/webapi-doc/
Session validation requests a minute	1	GET /sso/validate only	interactivebrokers.comchecked 12 Oct 2026corroborated by ibkrcampus.com/campus/ibkr-api-page/webapi-doc/
Session keep alive requests a second	1	GET /tickle only	interactivebrokers.comchecked 12 Oct 2026corroborated by ibkrcampus.com/campus/ibkr-api-page/webapi-doc/

Interactive Brokers API errors you may meet

All Interactive Brokers API error codes, including 505 more not listed here.