# PubMed Scraper — Biomedical Research Papers (`du7chmaniac/pubmed-scraper`) Actor

Scrape biomedical research papers from PubMed via the NCBI E-utilities API. Search by keyword with optional date range, retrieve article metadata, abstracts, authors, MeSH terms, and DOIs. Supports both summary (fast) and full (with abstract) retrieval modes.

- **URL**: https://apify.com/du7chmaniac/pubmed-scraper.md
- **Developed by:** [Joren Maurissen](https://apify.com/du7chmaniac) (community)
- **Categories:** Developer tools, Automation, Other
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $0.50 / 1,000 results

This Actor is paid per event and usage. You are charged both the fixed price for specific events and for Apify platform usage.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js.md):

```bash
npm install apify-client
```

In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.md):

```bash
pip install apify-client
```

In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md):

````bash
# MacOS / Linux
curl -fsSL https://apify.com/install-cli.sh | bash
# Windows
irm https://apify.com/install-cli.ps1 | iex
```bash

In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/platform/integrations/mcp.md).

If your project is in a different language, use the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).


# README

## PubMed Scraper — Biomedical Research Papers

Search and scrape biomedical research papers from [PubMed](https://pubmed.ncbi.nlm.nih.gov/) using the NCBI E-utilities API. No API key required — the NCBI E-utilities are free and open.

### Features

- **Keyword search** with PubMed query syntax support (e.g. `CRISPR gene editing`, `cancer AND immunotherapy`)
- **Two retrieval modes**:
  - **Summary** (fast): title, authors, journal, publication date, DOI, pub type, language
  - **Full** (detailed): everything in summary + abstract, MeSH terms, ISSN, publication year
- **Date range filtering** (e.g. `2020:2026`) to narrow results by publication date
- **Sort by relevance or date** — use PubMed's native ranking or get the most recent papers
- **Structured output** — clean JSON records ready for analysis, with PubMed URLs for each article
- **Rate-limit aware** — respects NCBI's 3 requests/second guideline

### Input

| Field | Type | Required | Default | Description |
|-------|------|----------|---------|-------------|
| `searchTerm` | string | ✅ | `cancer` | PubMed search query (supports full PubMed syntax) |
| `maxResults` | integer | | `20` | Maximum articles to retrieve (1–10,000) |
| `retType` | select | | `summary` | `summary` (fast) or `full` (with abstracts + MeSH terms) |
| `sort` | select | | `relevance` | `relevance` or `date` (most recent first) |
| `dateRange` | string | | — | Publication date range, e.g. `2020:2026` |

### Output

Each article is pushed as a JSON record to the dataset:

#### Summary mode fields
| Field | Description |
|-------|-------------|
| `pmid` | PubMed Unique Identifier |
| `title` | Article title |
| `authors` | Author names (semicolon-separated) |
| `journal` | Journal abbreviation/source |
| `pubDate` | Publication date |
| `epubDate` | Electronic publication date |
| `doi` | Digital Object Identifier |
| `pubType` | Publication type(s) |
| `lang` | Language(s) |
| `url` | PubMed URL for the article |
| `scrapedAt` | ISO timestamp of scrape |

#### Full mode adds
| Field | Description |
|-------|-------------|
| `abstract` | Full abstract text |
| `issn` | ISSN |
| `pubYear` | Publication year |
| `meshTerms` | MeSH subject headings (semicolon-separated) |

### Example Input

```json
{
    "searchTerm": "CRISPR gene editing",
    "maxResults": 50,
    "retType": "full",
    "sort": "date",
    "dateRange": "2023:2026"
}
````

### Use Cases

- **Literature reviews** — batch-download article metadata for systematic reviews
- **Research monitoring** — track new publications in your field by date range
- **Bibliometric analysis** — extract author lists, MeSH terms, and publication patterns
- **Data enrichment** — get DOIs and PubMed URLs for reference management
- **AI/ML training data** — build datasets of biomedical abstracts for NLP tasks

### Technical Details

This actor uses the [NCBI E-utilities API](https://www.ncbi.nlm.nih.gov/books/NBK25500/):

- **esearch.fcgi** — searches PubMed and returns PMIDs
- **esummary.fcgi** — fetches document summaries (summary mode)
- **efetch.fcgi** — fetches full XML records parsed with BeautifulSoup (full mode)

No authentication required. The actor respects NCBI's rate limit guideline (≤3 requests/second).

### Pricing

Pay per result — you only pay for the articles actually returned in the dataset.

# Actor input Schema

## `searchTerm` (type: `string`):

PubMed search query (supports PubMed search syntax, e.g. 'CRISPR gene editing', 'cancer AND immunotherapy').

## `maxResults` (type: `integer`):

Maximum number of articles to retrieve.

## `retType` (type: `string`):

summary = fast document summaries (title, authors, journal, DOI); full = complete records with abstracts and MeSH terms (slower).

## `sort` (type: `string`):

Sort order for search results: relevance (default PubMed relevance) or date (most recent first).

## `dateRange` (type: `string`):

Optional publication date range, e.g. '2020:2026'. Filters by publication date.

## `proxyConfiguration` (type: `object`):

Optional — NCBI limits 3 req/sec per IP without API key

## Actor input object example

```json
{
  "searchTerm": "cancer",
  "maxResults": 20,
  "retType": "summary",
  "sort": "relevance",
  "proxyConfiguration": {
    "useApifyProxy": false
  }
}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "searchTerm": "cancer",
    "dateRange": ""
};

// Run the Actor and wait for it to finish
const run = await client.actor("du7chmaniac/pubmed-scraper").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {
    "searchTerm": "cancer",
    "dateRange": "",
}

# Run the Actor and wait for it to finish
run = client.actor("du7chmaniac/pubmed-scraper").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "searchTerm": "cancer",
  "dateRange": ""
}' |
apify call du7chmaniac/pubmed-scraper --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=du7chmaniac/pubmed-scraper",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

```json
{
    "openapi": "3.0.1",
    "info": {
        "title": "PubMed Scraper — Biomedical Research Papers",
        "description": "Scrape biomedical research papers from PubMed via the NCBI E-utilities API. Search by keyword with optional date range, retrieve article metadata, abstracts, authors, MeSH terms, and DOIs. Supports both summary (fast) and full (with abstract) retrieval modes.",
        "version": "0.1",
        "x-build-id": "FUYfSmx22pDiStwTv"
    },
    "servers": [
        {
            "url": "https://api.apify.com/v2"
        }
    ],
    "paths": {
        "/acts/du7chmaniac~pubmed-scraper/run-sync-get-dataset-items": {
            "post": {
                "operationId": "run-sync-get-dataset-items-du7chmaniac-pubmed-scraper",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        },
        "/acts/du7chmaniac~pubmed-scraper/runs": {
            "post": {
                "operationId": "runs-sync-du7chmaniac-pubmed-scraper",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor and returns information about the initiated run in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/runsResponseSchema"
                                }
                            }
                        }
                    }
                }
            }
        },
        "/acts/du7chmaniac~pubmed-scraper/run-sync": {
            "post": {
                "operationId": "run-sync-du7chmaniac-pubmed-scraper",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        }
    },
    "components": {
        "schemas": {
            "inputSchema": {
                "type": "object",
                "required": [
                    "searchTerm"
                ],
                "properties": {
                    "searchTerm": {
                        "title": "Search term",
                        "type": "string",
                        "description": "PubMed search query (supports PubMed search syntax, e.g. 'CRISPR gene editing', 'cancer AND immunotherapy')."
                    },
                    "maxResults": {
                        "title": "Max results",
                        "minimum": 1,
                        "maximum": 10000,
                        "type": "integer",
                        "description": "Maximum number of articles to retrieve.",
                        "default": 20
                    },
                    "retType": {
                        "title": "Retrieval type",
                        "enum": [
                            "summary",
                            "full"
                        ],
                        "type": "string",
                        "description": "summary = fast document summaries (title, authors, journal, DOI); full = complete records with abstracts and MeSH terms (slower).",
                        "default": "summary"
                    },
                    "sort": {
                        "title": "Sort order",
                        "enum": [
                            "relevance",
                            "date"
                        ],
                        "type": "string",
                        "description": "Sort order for search results: relevance (default PubMed relevance) or date (most recent first).",
                        "default": "relevance"
                    },
                    "dateRange": {
                        "title": "Date range (YYYY:YYYY)",
                        "type": "string",
                        "description": "Optional publication date range, e.g. '2020:2026'. Filters by publication date."
                    },
                    "proxyConfiguration": {
                        "title": "Proxy configuration",
                        "type": "object",
                        "description": "Optional — NCBI limits 3 req/sec per IP without API key",
                        "default": {
                            "useApifyProxy": false
                        }
                    }
                }
            },
            "runsResponseSchema": {
                "type": "object",
                "properties": {
                    "data": {
                        "type": "object",
                        "properties": {
                            "id": {
                                "type": "string"
                            },
                            "actId": {
                                "type": "string"
                            },
                            "userId": {
                                "type": "string"
                            },
                            "startedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "finishedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "status": {
                                "type": "string",
                                "example": "READY"
                            },
                            "meta": {
                                "type": "object",
                                "properties": {
                                    "origin": {
                                        "type": "string",
                                        "example": "API"
                                    },
                                    "userAgent": {
                                        "type": "string"
                                    }
                                }
                            },
                            "stats": {
                                "type": "object",
                                "properties": {
                                    "inputBodyLen": {
                                        "type": "integer",
                                        "example": 2000
                                    },
                                    "rebootCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "restartCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "resurrectCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "computeUnits": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "options": {
                                "type": "object",
                                "properties": {
                                    "build": {
                                        "type": "string",
                                        "example": "latest"
                                    },
                                    "timeoutSecs": {
                                        "type": "integer",
                                        "example": 300
                                    },
                                    "memoryMbytes": {
                                        "type": "integer",
                                        "example": 1024
                                    },
                                    "diskMbytes": {
                                        "type": "integer",
                                        "example": 2048
                                    }
                                }
                            },
                            "buildId": {
                                "type": "string"
                            },
                            "defaultKeyValueStoreId": {
                                "type": "string"
                            },
                            "defaultDatasetId": {
                                "type": "string"
                            },
                            "defaultRequestQueueId": {
                                "type": "string"
                            },
                            "buildNumber": {
                                "type": "string",
                                "example": "1.0.0"
                            },
                            "containerUrl": {
                                "type": "string"
                            },
                            "usage": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "integer",
                                        "example": 1
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "usageTotalUsd": {
                                "type": "number",
                                "example": 0.00005
                            },
                            "usageUsd": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "number",
                                        "example": 0.00005
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
```
