---
title: "List paper sources"
method: GET
path: "/research/sources"
tags: ["Research"]
---

# List paper sources

`GET /research/sources`

## Request

- Base URL: `https://api.crawlora.net/api/v1`
- URL: `https://api.crawlora.net/api/v1/research/sources`
- Auth: API key in header `x-api-key`

Return the stable authenticated paper source registry, including arXiv search and MED-backed Europe PMC metadata, licensed text and citation operations.

## Response `200`

OK

- object: The Response struct is used for wrapping the API response with a code, message, and data.
  - `code` integer: Code is the HTTP status code or a custom code used to indicate the result of the request @example 200
  - `data` object: Data is the response data (can be any object or null) @example {"id": 1, "name": "John Doe"}
    - `has_more` boolean
    - `items` ResearchretrievalPaperSourceDescriptor[]
      - `artifact_types` string[]
      - `corpus` string
      - `corpus_revision` string
      - `filters` string[]
      - `last_success_at` string
      - `name` string
      - `operations` string[]
      - `source_id` string
      - `state` 'ready'
      - `url` string
    - `next_cursor` string
    - `registry_revision` string
  - `msg` unknown

## Other responses

- `401`: Unauthorized
- `503`: Service Unavailable

---

[API](https://skmtc.dev/crawlora/apis/crawlora-api.md) · [All operations](https://skmtc.dev/crawlora/apis/crawlora-api/llms.txt) · [OpenAPI document](https://skmtc.dev/crawlora/apis/crawlora-api/revisions/0497899e2016?raw)