GET ncbi.nlm.nih.gov HTTP 200113 ms1.5 KB$0.00007 captured Aug 7, 2026

ncbi.nlm.nih.gov, as data

One API turns any ncbi.nlm.nih.gov page into markdown, structured JSON, its link graph or a screenshot, and crawls the whole site the same way. The panel shows the real response we captured.

target profile from the capture

Render mode: Plain HTTP, no browser needed
Response: HTTP 200 in 113 ms
Page size: 1.5 KB of markdown, 56 lines
Fields: Title, Authors, Abstract, Journal
Captured: Aug 7, 2026

Start scraping ncbi.nlm.nih.gov See the code

Free balance on signup, no card. This ncbi.nlm.nih.gov page cost $0.00007 to fetch.

response 200 · 113 ms · 1.5 KB

# Welcome to NCBIThe National Center for Biotechnology Informationadvances science and health by providing access tobiomedical and genomic information.## Submit Deposit data or manuscripts into NCBI databases Submit Icon## Download Transfer NCBI data to your computer Download Icon## Learn Find help documents, attend a class or watch a tutorial Books Icon## Develop Use NCBI APIs and code libraries to build applications Develop Icon## Analyze Identify an NCBI tool for your data analysis task Graph Icon## Research Explore NCBI research and collaborative projects Microscope Icon### Popular Resources

POST /scrape · ncbi.nlm.nih.gov/index.md · markdown · 56 lines · captured Aug 7, 2026

What Spider does on ncbi.nlm.nih.gov

Same key, five endpoints. The numbers under a cell were measured on this page.

/scrape

Page to markdown

Clean text for RAG and LLM context, boilerplate removed. The lane that runs without a key.

113 ms · $0.00007

/fetch

Page to JSON

Spider reads the page and names the fields. Pass your own schema when you need exact keys.

/crawl

Whole site

Follows ncbi.nlm.nih.gov's own links, respects robots, streams pages as they land.

/links

Link graph

Every internal and external URL on a page, before you decide what to fetch.

/screenshot

Rendered capture

Real Chromium, full-page PNG. The same call also returns the rendered HTML.

The call behind the panel

This request produced the response above. Paste it with your key and you get the same bytes.

request scrape.sh

curl -X POST https://api.spider.cloud/scrape \
  -H "Authorization: Bearer $SPIDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://ncbi.nlm.nih.gov/", "return_format": "markdown"}'

from spider import Spider

app = Spider()
params = {"return_format": "markdown"}
page = app.scrape_url("https://ncbi.nlm.nih.gov/", params=params)
print(page[0]["content"])

import { Spider } from "@spider-cloud/spider-client";

const app = new Spider();
const [page] = await app.scrapeUrl("https://ncbi.nlm.nih.gov/", {
  return_format: "markdown",
});
console.log(page.content);

plain request · no browser, no selectors

What ncbi.nlm.nih.gov costs

Multiplied from the measured 1.5 KB page. Estimates round to the cent.

cost measured

This page, once 1.5 KB over HTTP, measured $0.00007

This page, daily for a month 30 fetches at the measured price ≈ $0.002114

1,000 pages this size 1.4 MB at the measured price ≈ $0.07

10,000 pages this size 14.3 MB at the measured price ≈ $0.70

1 GB of transfer costs $1, plus $0.001 per CPU minute, and failed requests cost $0. Crawling daily? The Unlimited plan is a flat monthly rate.

Point this at the rest of ncbi.nlm.nih.gov.

The capture above took 113 ms and cost $0.00007. The same call takes any URL on ncbi.nlm.nih.gov.

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