ID Mapping API: CUSIP / ISIN / FIGI / LEI / CIK ↔ Symbol

The ID Mapping API lets you resolve common identifiers (CUSIP, ISIN, OpenFIGI, LEI, CIK) to a tradable symbol (e.g. AAPL) and vice-versa using flexible filters. It’s ideal for onboarding portfolios, normalizing vendor feeds, or building “search-and-resolve” experiences.

API Endpoint

GET https://eodhd.com/api/id-mapping

Description

Retrieve common identifiers for a symbol or by a specific identifier. Supports CUSIP, ISIN, OpenFigi, LEI, and CIK. At least one filter value is required.

Request Example

https://eodhd.com/api/id-mapping?filter[symbol]=AAPL.US&page[limit]=100&page[offset]=0&api_token=YOUR_API_TOKEN&fmt=json

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curl --location "https://eodhd.com/api/id-mapping?filter[symbol]=AAPL.US&page[limit]=100&page[offset]=0&api_token=YOUR_API_TOKEN&fmt=json"

(Sign up for free to get an API token)

$curl = curl_init();

curl_setopt_array($curl, array(
    CURLOPT_URL => 'https://eodhd.com/api/id-mapping?filter[symbol]=AAPL.US&page[limit]=100&page[offset]=0&api_token=YOUR_API_TOKEN&fmt=json',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => '',
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => 'GET',
));

$data = curl_exec($curl);
curl_close($curl);

try {
    $data = json_decode($data, true, 512, JSON_THROW_ON_ERROR);
    var_dump($data);
} catch (Exception $e) {
    echo 'Error. '.$e->getMessage();
}

(Sign up for free to get an API token)

import requests

url = f'https://eodhd.com/api/id-mapping?filter[symbol]=AAPL.US&page[limit]=100&page[offset]=0&api_token=YOUR_API_TOKEN&fmt=json'
data = requests.get(url).json()

print(data)

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library(httr)
library(jsonlite)

url <- 'https://eodhd.com/api/id-mapping?filter[symbol]=AAPL.US&page[limit]=100&page[offset]=0&api_token=YOUR_API_TOKEN&fmt=json'
response <- GET(url)

if (http_type(response) == "application/json") {
    content <- content(response, "text", encoding = "UTF-8")
    cat(content)
} else {
    cat("Error while receiving data\n")
}

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How to use it (YouTube)

Parameters

Parameter	Required	Type	Description
filter[symbol]	Yes (if no other filter provided)	string	Scope results by ticker, for example: AAPL.US
filter[ex]	Yes (if no other filter provided)	string	Scope results by exchange code, for example: US
filter[isin]	Yes (if no other filter provided)	string	Scope results by ISIN, for example: US0378331005
filter[figi]	Yes (if no other filter provided)	string	Scope results by OpenFigi identifier, for example: BBG000B9XRY4
filter[lei]	Yes (if no other filter provided)	string	Scope results by LEI, for example: HWUPKR0MPOU8FGXBT394
filter[cusip]	Yes (if no other filter provided)	string	Scope results by CUSIP, for example: 037833100
filter[cik]	Yes (if no other filter provided)	string	Scope results by CIK, for example: 0000320193
page[limit]	No	integer	Limit results per request. Default: 1000, min: 1, max: 1000
page[offset]	No	integer	Offset for pagination. Default: 0
api_token	Yes	string	Your unique API access token

Notes:

Provide at least one of the following: filter[symbol], filter[ex], filter[isin], filter[figi], filter[lei], filter[cusip], filter[cik].
Filters use deep-object style (filter[…]) for clarity and future extensibility.

Output Format (JSON)

The response includes meta for pagination, a data array of mapping objects, and links for pagination.

Field	Type	Description
meta.total	integer	Total number of results available
meta.limit	integer	Max number of results returned in this response
meta.offset	integer	Offset applied to this response
data	array	List of mapping records
data[].symbol	string	Ticker symbol
data[].isin	string	ISIN identifier
data[].figi	string	OpenFigi identifier
data[].lei	string	LEI identifier
data[].cusip	string	CUSIP identifier
data[].cik	string	CIK identifier
links.next	string or null	URL to the next page, if available

Output Response Example

{
  "meta": {
    "total": 1,
    "limit": 100,
    "offset": 0
  },
  "data": [
    {
      "symbol": "AAPL.US",
      "isin": "US0378331005",
      "figi": "BBG000B9XRY4",
      "lei": "HWUPKR0MPOU8FGXBT394",
      "cusip": "037833100",
      "cik": "0000320193"
    }
  ],
  "links": {
    "next": null
  }
}

Additional Examples

Lookup by ISIN:

https://eodhd.com/api/id-mapping?filter[isin]=US0378331005&api_token=YOUR_API_TOKEN

(Sign up for free to get an API token)

curl --location "https://eodhd.com/api/id-mapping?filter[isin]=US0378331005&api_token=YOUR_API_TOKEN&fmt=json"

(Sign up for free to get an API token)

$curl = curl_init();

curl_setopt_array($curl, array(
    CURLOPT_URL => 'https://eodhd.com/api/id-mapping?filter[isin]=US0378331005&api_token=YOUR_API_TOKEN&fmt=json',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => '',
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => 'GET',
));

$data = curl_exec($curl);
curl_close($curl);

try {
    $data = json_decode($data, true, 512, JSON_THROW_ON_ERROR);
    var_dump($data);
} catch (Exception $e) {
    echo 'Error. '.$e->getMessage();
}

(Sign up for free to get an API token)

import requests

url = f'https://eodhd.com/api/id-mapping?filter[isin]=US0378331005&api_token=YOUR_API_TOKEN&fmt=json'
data = requests.get(url).json()

print(data)

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library(httr)
library(jsonlite)

url <- 'https://eodhd.com/api/id-mapping?filter[isin]=US0378331005&api_token=YOUR_API_TOKEN&fmt=json'
response <- GET(url)

if (http_type(response) == "application/json") {
    content <- content(response, "text", encoding = "UTF-8")
    cat(content)
} else {
    cat("Error while receiving data\n")
}

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Looking by exchange code:

https://eodhd.com/api/id-mapping?filter[ex]=US&page[limit]=50&api_token=YOUR_API_TOKEN

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curl --location "https://eodhd.com/api/id-mapping?filter[ex]=US&page[limit]=50&api_token=YOUR_API_TOKEN&fmt=json"

(Sign up for free to get an API token)

$curl = curl_init();

curl_setopt_array($curl, array(
    CURLOPT_URL => 'https://eodhd.com/api/id-mapping?filter[ex]=US&page[limit]=50&api_token=YOUR_API_TOKEN&fmt=json',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => '',
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => 'GET',
));

$data = curl_exec($curl);
curl_close($curl);

try {
    $data = json_decode($data, true, 512, JSON_THROW_ON_ERROR);
    var_dump($data);
} catch (Exception $e) {
    echo 'Error. '.$e->getMessage();
}

(Sign up for free to get an API token)

import requests

url = f'https://eodhd.com/api/id-mapping?filter[ex]=US&page[limit]=50&api_token=YOUR_API_TOKEN&fmt=json'
data = requests.get(url).json()

print(data)

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library(httr)
library(jsonlite)

url <- 'https://eodhd.com/api/id-mapping?filter[ex]=US&page[limit]=50&api_token=YOUR_API_TOKEN&fmt=json'
response <- GET(url)

if (http_type(response) == "application/json") {
    content <- content(response, "text", encoding = "UTF-8")
    cat(content)
} else {
    cat("Error while receiving data\n")
}

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Use our Search API to locate assets filtering by asset category, exchange or ticker name.