> ## Documentation Index
> Fetch the complete documentation index at: https://hexagraph-docs.voyla.in/llms.txt
> Use this file to discover all available pages before exploring further.
# Publisher
> Retrieve detailed metadata for a single publishing organization by its HX_P identifier.
Retrieves a single publishing organization (commercial publisher, university press, or society publisher) by its `HX_P` identifier.
### Path Parameters
Unique publisher identifier (e.g. `HX_P4310319965`). Must be prefixed with `HX_P`.
### Response Fields
Unique publisher identifier prefixed with `HX_P` (e.g. `HX_P4310320990`).
Publisher display name (e.g. `"Elsevier BV"`).
Alternative publisher titles array.
Hierarchy depth (`0` for top-level publisher group).
Parent publishing group object.
Countries array.
ISO country code (e.g. `"NL"`).
Country display name.
Official homepage URL.
Publisher logo image URL.
Publisher logo thumbnail URL.
Total number of indexed outputs published by this organization.
Total citation count received across all published outputs.
Aggregated impact metrics.
Two-year mean citation rate.
Calculated h-index score.
Calculated i10-index score.
External identifiers mapping.
ROR identifier URL.
Wikidata entity URL.
Outputs, OA outputs, and citations grouped by year.
Year number.
Outputs published in year.
Open Access outputs published in year.
Citations received in year.
Entity roles array.
Role type (`funder`, `institution`, `publisher`).
Entity ID.
Outputs count for role.
ISO last updated timestamp.
ISO creation date timestamp.
```bash cURL theme={null}
curl -X GET "https://api.hexagraph.in/publishers/HX_P4310320990"
```
```javascript JavaScript theme={null}
fetch("https://api.hexagraph.in/publishers/HX_P4310320990")
.then(response => response.json())
.then(data => console.log(data));
```
```python Python theme={null}
import requests
response = requests.get("https://api.hexagraph.in/publishers/HX_P4310320990")
print(response.json())
```
```go Go theme={null}
package main
import (
"fmt"
"io"
"net/http"
)
func main() {
resp, err := http.Get("https://api.hexagraph.in/publishers/HX_P4310320990")
if err != nil {
fmt.Println("Error:", err)
return
}
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Println(string(body))
}
```
```json 200 OK theme={null}
{
"id": "HX_P4310320990",
"name": "Elsevier BV",
"alternate_titles": [
"Elsevier",
"elsevier.com",
"Elsevier Science",
"Uitg. Elsevier",
"السفير",
"السوير",
"انتشارات الزویر",
"لودویک السفیر",
"爱思唯尔"
],
"hierarchy_level": 0,
"parent_publisher": null,
"countries": [
{
"code": "NL",
"name": null
}
],
"homepage_url": "https://www.relx.com",
"image_url": "https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Elsevier.svg",
"image_thumbnail_url": "https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Elsevier.svg&width=300",
"outputs_count": 24185686,
"cited_by_count": 646480324,
"summary_stats": {
"2yr_mean_citedness": 4.319272176423483,
"h_index": 2891,
"i10_index": 10413621
},
"ids": {
"ror": "https://ror.org/02scfj030",
"wikidata": "https://www.wikidata.org/entity/Q746413"
},
"counts_by_year": [
{
"year": 2026,
"outputs_count": 661865,
"oa_outputs_count": 0,
"cited_by_count": 206628
},
{
"year": 2025,
"outputs_count": 1108363,
"oa_outputs_count": 0,
"cited_by_count": 3367431
},
{
"year": 2024,
"outputs_count": 1019513,
"oa_outputs_count": 0,
"cited_by_count": 8475596
}
],
"roles": [
{
"role": "funder",
"id": "HX_F4320308305",
"outputs_count": 162
},
{
"role": "institution",
"id": "HX_I1318003438",
"outputs_count": 7800
},
{
"role": "institution",
"id": "HX_I4210160603",
"outputs_count": 652
},
{
"role": "publisher",
"id": "HX_P4310320990",
"outputs_count": 24185686
}
],
"updated_date": "2026-08-05T04:01:49",
"created_date": "2023-01-01T00:00:00"
}
```
```json 400 Bad Request theme={null}
{
"statusCode": 400,
"message": "Only HX_ prefixed IDs are allowed",
"error": "Bad Request"
}
```
```json 404 Not Found theme={null}
{
"statusCode": 404,
"message": "Publisher with ID HX_P9999999999 not found",
"error": "Not Found"
}
```
```json 429 Too Many Requests theme={null}
{
"statusCode": 429,
"error": "Too Many Requests",
"message": "IP rate limit exceeded (max 30 requests per minute). Please try again in 42 seconds (at 11:40:32 UTC).",
"reset_in_seconds": 42,
"reset_at_utc": "2026-08-05T11:40:32.000Z"
}
```