CROssBAR Data API

ebi · Data

Data No Auth Free & Open open_data

# About CROssBAR & data **CROssBAR**: Comprehensive Resource of Biomedical Relations with Deep Learning Applications and Knowledge Graph Representations CROssBAR is a comprehensive system that integrates large-scale biomedical data from various resources e.g UniProt, ChEMBL, Drugbank, EFO, HPO, InterPro & PubChem and stores them in a new NoSQL database, enrich these data with deep learning based prediction of relations between numerous biomedical entities, rigorously analyse the enriched data to

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Get ChEMBL activities

Get ChEMBL activities

https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/activities?page=0&limit=10&pchemblValue=1&assayChemblId=example&targetChemblId=example&moleculeChemblId=example

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/activities?page=0&limit=10&pchemblValue=1&assayChemblId=example&targetChemblId=example&moleculeChemblId=example"

import requests
params = {
    "page": "0",
    "limit": "10",
    "pchemblValue": "1",
    "assayChemblId": "example",
    "targetChemblId": "example",
    "moleculeChemblId": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/activities",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/activities');
url.searchParams.set('page', '0');
url.searchParams.set('limit', '10');
url.searchParams.set('pchemblValue', '1');
url.searchParams.set('assayChemblId', 'example');
url.searchParams.set('targetChemblId', 'example');
url.searchParams.set('moleculeChemblId', 'example');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/activities")
	q := baseURL.Query()
	q.Set("page", "0")
	q.Set("limit", "10")
	q.Set("pchemblValue", "1")
	q.Set("assayChemblId", "example")
	q.Set("targetChemblId", "example")
	q.Set("moleculeChemblId", "example")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/activities")
uri.query = URI.encode_www_form({
  "page" => "0",
  "limit" => "10",
  "pchemblValue" => "1",
  "assayChemblId" => "example",
  "targetChemblId" => "example",
  "moleculeChemblId" => "example"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/activities?" . http_build_query([
    "page" => "0",
    "limit" => "10",
    "pchemblValue" => "1",
    "assayChemblId" => "example",
    "targetChemblId" => "example",
    "moleculeChemblId" => "example"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Get ChEMBL assays

Get ChEMBL assays

https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/assays?page=0&limit=10&assayOrg=example&assayType=example&assayChemblId=example&targetChemblId=example

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/assays?page=0&limit=10&assayOrg=example&assayType=example&assayChemblId=example&targetChemblId=example"

import requests
params = {
    "page": "0",
    "limit": "10",
    "assayOrg": "example",
    "assayType": "example",
    "assayChemblId": "example",
    "targetChemblId": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/assays",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/assays');
url.searchParams.set('page', '0');
url.searchParams.set('limit', '10');
url.searchParams.set('assayOrg', 'example');
url.searchParams.set('assayType', 'example');
url.searchParams.set('assayChemblId', 'example');
url.searchParams.set('targetChemblId', 'example');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/assays")
	q := baseURL.Query()
	q.Set("page", "0")
	q.Set("limit", "10")
	q.Set("assayOrg", "example")
	q.Set("assayType", "example")
	q.Set("assayChemblId", "example")
	q.Set("targetChemblId", "example")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/assays")
uri.query = URI.encode_www_form({
  "page" => "0",
  "limit" => "10",
  "assayOrg" => "example",
  "assayType" => "example",
  "assayChemblId" => "example",
  "targetChemblId" => "example"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/assays?" . http_build_query([
    "page" => "0",
    "limit" => "10",
    "assayOrg" => "example",
    "assayType" => "example",
    "assayChemblId" => "example",
    "targetChemblId" => "example"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET drugs collected from Drugbank

drugs collected from Drugbank

https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/drugs?name=test&page=0&limit=10&chemblId=example&accession=example&identifier=example&pubchemCid=example

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/drugs?name=test&page=0&limit=10&chemblId=example&accession=example&identifier=example&pubchemCid=example"

import requests
params = {
    "name": "test",
    "page": "0",
    "limit": "10",
    "chemblId": "example",
    "accession": "example",
    "identifier": "example",
    "pubchemCid": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/drugs",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/drugs');
url.searchParams.set('name', 'test');
url.searchParams.set('page', '0');
url.searchParams.set('limit', '10');
url.searchParams.set('chemblId', 'example');
url.searchParams.set('accession', 'example');
url.searchParams.set('identifier', 'example');
url.searchParams.set('pubchemCid', 'example');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/drugs")
	q := baseURL.Query()
	q.Set("name", "test")
	q.Set("page", "0")
	q.Set("limit", "10")
	q.Set("chemblId", "example")
	q.Set("accession", "example")
	q.Set("identifier", "example")
	q.Set("pubchemCid", "example")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/drugs")
uri.query = URI.encode_www_form({
  "name" => "test",
  "page" => "0",
  "limit" => "10",
  "chemblId" => "example",
  "accession" => "example",
  "identifier" => "example",
  "pubchemCid" => "example"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/ebi.ac.uk/1.0/drugs?" . http_build_query([
    "name" => "test",
    "page" => "0",
    "limit" => "10",
    "chemblId" => "example",
    "accession" => "example",
    "identifier" => "example",
    "pubchemCid" => "example"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

See official documentation for authentication and setup.

What can you build with CROssBAR Data API?

CROssBAR Data API is a Data API. Developers commonly use data APIs for:

enriching your app with third-party datasets
building data pipelines and ETL workflows
querying and searching large datasets
powering research, analysis, and reporting tools
syncing reference data into your own systems

No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. CROssBAR Data API is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide · Learn about API keys · What is REST?

Open documentation ↗