Link Entities (Batch)

Link entities (batch)

curl --request POST \
  --url https://api.eka.care/med-link/nel/link/batch \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "queries": [
    "fever",
    "headache"
  ],
  "ontology": "snomed",
  "version": "20250401_extended",
  "top_k": 2
}
'

import requests

url = "https://api.eka.care/med-link/nel/link/batch"

payload = {
    "queries": ["fever", "headache"],
    "ontology": "snomed",
    "version": "20250401_extended",
    "top_k": 2
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    queries: ['fever', 'headache'],
    ontology: 'snomed',
    version: '20250401_extended',
    top_k: 2
  })
};

fetch('https://api.eka.care/med-link/nel/link/batch', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.eka.care/med-link/nel/link/batch",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'queries' => [
        'fever',
        'headache'
    ],
    'ontology' => 'snomed',
    'version' => '20250401_extended',
    'top_k' => 2
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.eka.care/med-link/nel/link/batch"

	payload := strings.NewReader("{\n  \"queries\": [\n    \"fever\",\n    \"headache\"\n  ],\n  \"ontology\": \"snomed\",\n  \"version\": \"20250401_extended\",\n  \"top_k\": 2\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.eka.care/med-link/nel/link/batch")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"queries\": [\n    \"fever\",\n    \"headache\"\n  ],\n  \"ontology\": \"snomed\",\n  \"version\": \"20250401_extended\",\n  \"top_k\": 2\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.eka.care/med-link/nel/link/batch")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"queries\": [\n    \"fever\",\n    \"headache\"\n  ],\n  \"ontology\": \"snomed\",\n  \"version\": \"20250401_extended\",\n  \"top_k\": 2\n}"

response = http.request(request)
puts response.read_body

{
  "results": [
    {
      "request_id": "e4b280cf-40a1-4a83-9f25-f7f07f3766ed",
      "query": "fever",
      "query_breakdown": null,
      "ontology": "snomed",
      "version": "20250401_extended",
      "index_name": "snomed_20250401_extended_c88b15811956d4fcb54da9ae_1bfcc90540_pg",
      "model_version": "c88b15811956d4fcb54da9ae6d14a733ac90e7a7",
      "results": [
        {
          "term_id": "386661006",
          "term_name": "Febrile",
          "score": 0.89858478307724,
          "is_linked": true,
          "metadata": {
            "semantic_tag": "finding",
            "is_core": true,
            "source": "snomed_ct_20250401_extended",
            "language": "en",
            "script": "latin"
          }
        }
      ]
    },
    {
      "request_id": "e4b280cf-40a1-4a83-9f25-f7f07f3766ed",
      "query": "headache",
      "query_breakdown": null,
      "ontology": "snomed",
      "version": "20250401_extended",
      "index_name": "snomed_20250401_extended_c88b15811956d4fcb54da9ae_1bfcc90540_pg",
      "model_version": "c88b15811956d4fcb54da9ae6d14a733ac90e7a7",
      "results": [
        {
          "term_id": "25064002",
          "term_name": "Headache",
          "score": 0.9999999403953606,
          "is_linked": true,
          "metadata": {
            "semantic_tag": "finding",
            "is_core": true,
            "source": "snomed_ct_20250401_extended",
            "language": "en",
            "script": "latin"
          }
        }
      ]
    }
  ]
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}

POST

med-link

nel

link

batch

Link entities (batch)

curl --request POST \
  --url https://api.eka.care/med-link/nel/link/batch \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "queries": [
    "fever",
    "headache"
  ],
  "ontology": "snomed",
  "version": "20250401_extended",
  "top_k": 2
}
'

import requests

url = "https://api.eka.care/med-link/nel/link/batch"

payload = {
    "queries": ["fever", "headache"],
    "ontology": "snomed",
    "version": "20250401_extended",
    "top_k": 2
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    queries: ['fever', 'headache'],
    ontology: 'snomed',
    version: '20250401_extended',
    top_k: 2
  })
};

fetch('https://api.eka.care/med-link/nel/link/batch', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.eka.care/med-link/nel/link/batch",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'queries' => [
        'fever',
        'headache'
    ],
    'ontology' => 'snomed',
    'version' => '20250401_extended',
    'top_k' => 2
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.eka.care/med-link/nel/link/batch"

	payload := strings.NewReader("{\n  \"queries\": [\n    \"fever\",\n    \"headache\"\n  ],\n  \"ontology\": \"snomed\",\n  \"version\": \"20250401_extended\",\n  \"top_k\": 2\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.eka.care/med-link/nel/link/batch")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"queries\": [\n    \"fever\",\n    \"headache\"\n  ],\n  \"ontology\": \"snomed\",\n  \"version\": \"20250401_extended\",\n  \"top_k\": 2\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.eka.care/med-link/nel/link/batch")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"queries\": [\n    \"fever\",\n    \"headache\"\n  ],\n  \"ontology\": \"snomed\",\n  \"version\": \"20250401_extended\",\n  \"top_k\": 2\n}"

response = http.request(request)
puts response.read_body

{
  "results": [
    {
      "request_id": "e4b280cf-40a1-4a83-9f25-f7f07f3766ed",
      "query": "fever",
      "query_breakdown": null,
      "ontology": "snomed",
      "version": "20250401_extended",
      "index_name": "snomed_20250401_extended_c88b15811956d4fcb54da9ae_1bfcc90540_pg",
      "model_version": "c88b15811956d4fcb54da9ae6d14a733ac90e7a7",
      "results": [
        {
          "term_id": "386661006",
          "term_name": "Febrile",
          "score": 0.89858478307724,
          "is_linked": true,
          "metadata": {
            "semantic_tag": "finding",
            "is_core": true,
            "source": "snomed_ct_20250401_extended",
            "language": "en",
            "script": "latin"
          }
        }
      ]
    },
    {
      "request_id": "e4b280cf-40a1-4a83-9f25-f7f07f3766ed",
      "query": "headache",
      "query_breakdown": null,
      "ontology": "snomed",
      "version": "20250401_extended",
      "index_name": "snomed_20250401_extended_c88b15811956d4fcb54da9ae_1bfcc90540_pg",
      "model_version": "c88b15811956d4fcb54da9ae6d14a733ac90e7a7",
      "results": [
        {
          "term_id": "25064002",
          "term_name": "Headache",
          "score": 0.9999999403953606,
          "is_linked": true,
          "metadata": {
            "semantic_tag": "finding",
            "is_core": true,
            "source": "snomed_ct_20250401_extended",
            "language": "en",
            "script": "latin"
          }
        }
      ]
    }
  ]
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}

About this endpoint

POST /med-link/nel/link/batch links up to 5 free-text entities in a single call. Every query in the batch shares the same ontology, version, top_k and metadata. The response results[] array contains one block per query, in request order — each block has the same shape as a single Link Entity response.

When to use it

Coding several entities from the same document (e.g. all symptoms in a note).
Reducing round-trips when the ontology and metadata are identical.

Because metadata is shared across the whole batch, group queries that need different hints — especially LOINC tests with different units or specimens — into separate batches, or use the single Link Entity endpoint.

Limits

Constraint	Value
Queries per request	1–5
`top_k`	1–10 (default 5)

Authorizations

Authorization

string

header

required

Bearer access token issued by the Eka authorization flow. See Authorization.

Body

application/json

queries

string[]

required

List of free-text entities to link (1–5).

Required array length: 1 - 5 elements

ontology

string

required

Ontology name applied to every query in the batch.

Example:

"snomed"

version

string

required

Ontology version applied to every query in the batch.

Example:

"20250401_extended"

top_k

integer

default:5

Number of candidate results to return per query.

Required range: 1 <= x <= 10

metadata

object

Ontology-specific hints applied to every query in the batch.

request_id

string | null

Optional request ID. Generated automatically if omitted.

Response

One result block per query, in request order.

results

object[]

required

One NELResponse per query, in request order.

Show child attributes

Link Entity Search Drugs and Laboratory Tests

Authorization

End-to-End Encryption

Connect

HealthAI

Medical Database

ABDM Connect

Doctor Tool

Medical Knowledge-bases

Medical Records

User App

About this endpoint

When to use it

Limits

Authorizations

Body

Response

​About this endpoint

​When to use it

​Limits

Authorizations

Body

Response

About this endpoint

When to use it

Limits