# Jülich DATA API

> Jülich DATA API on Apizie: 4 endpoints (Search, Dataset, Dataset files, Repository info) returned as clean JSON through one API key. 4 endpoints are live now. Call it over REST at https://zieapi.vercel.app/v1/open-data:julich-data/{endpoint} or from Claude, ChatGPT and Cursor through the Apizie MCP server. Free plan: 1,000 requests a month.

- Project key: `open-data:julich-data`
- Category: Open Data
- Status: live
- Source: https://data.fz-juelich.de
- Page: https://zieapi.vercel.app/api/open-data/julich-data
- OpenAPI: https://zieapi.vercel.app/api/open-data/julich-data/openapi.json

Research data repository (Germany): search published datasets and files and read their citation metadata through the repository's Dataverse API.

## Endpoints

### Search
`GET https://zieapi.vercel.app/v1/open-data:julich-data/search`

| Parameter | Type | Required | Description |
|---|---|---|---|
| query | string | no | Search words; * for everything |
| type | string | no |  |
| limit | integer | no | Number of results |
| offset | integer | no |  |
| sort | string | no |  |
| order | string | no |  |

### Dataset
`GET https://zieapi.vercel.app/v1/open-data:julich-data/dataset`

| Parameter | Type | Required | Description |
|---|---|---|---|
| persistentId | string | yes | DOI or handle, as shown in the search results (global_id) |

### Dataset files
`GET https://zieapi.vercel.app/v1/open-data:julich-data/files`

| Parameter | Type | Required | Description |
|---|---|---|---|
| persistentId | string | yes | DOI or handle of the dataset |

### Repository info
`GET https://zieapi.vercel.app/v1/open-data:julich-data/info`

## Example
```
curl "https://zieapi.vercel.app/v1/open-data:julich-data/search" \
  -H "x-api-key: $APIZIE_KEY"
```

## FAQ

### How do I call the Jülich DATA API?
Create a free Apizie key, then send GET https://zieapi.vercel.app/v1/open-data:julich-data/search with the header x-api-key. Every endpoint returns { project, data, timestamp }.

### Is the Jülich DATA API free on Apizie?
Yes. The Free plan includes 1,000 requests a month at 100 requests a minute, no credit card.

### Can AI agents use the Jülich DATA API?
Yes. Add the Apizie MCP server (https://zieapi.vercel.app/mcp) to Claude, ChatGPT, Cursor or VS Code, then ask in plain language. The agent calls run_scraper with project key open-data:julich-data.

### What is the status of the Jülich DATA API?
Live: works with just an Apizie key