GET doi.org HTTP 200162 ms3.7 KB$0.000051 captured Aug 7, 2026
doi.org, as data
One API turns any doi.org 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.
- Render mode
- Plain HTTP, no browser needed
- Response
- HTTP 200 in 162 ms
- Page size
- 3.7 KB of markdown, 34 lines
- Fields
- Form, Icon, Input, Link and 8 more
- Captured
- Aug 7, 2026
Free balance on signup, no card. This doi.org page cost $0.000051 to fetch.
The DOI Foundation is a not-for-profit organization. We govern the Digital Object Identifier (DOI) system on behalf of the agencies who manage DOI registries and provide services to their respective communities. We are the registration authority for the ISO standard (ISO 26324) for the DOI system and we are governed by our Registration Agencies.## WHO IS THE DOI FOUNDATION COMMUNITY?We are an international community of communities bound by a common interest in persistent infrastructure. So far, we have welcomed agencies that manage communities spanning entertainment, standards, the built environment, natural history collections, scholarly communications, and research data.## WHAT IS THE DIGITAL OBJECT IDENTIFIER (DOI)?A DOI name is a digital identifier of an object, any object — physical, digital, or abstract. DOIs solve a common problem: keeping track of things. Things can be matter, material, content, or activities.Designed to be used by humans as well as machines, DOIs identify objects persistently. They allow things to be uniquely identified and accessed reliably. You know what you have, where it is, and others can track it too.## DOI Proxy MilestoneIn December 2025, we passed the 3 Billion proxy resolution mark with a total of 3,071,362,438 resolutions for the month. Proxy resolutions have steadily increased over the years but nevertheless this is a significant milestone. To put it into perspective, it means that DOIs are resolved more than 1146 times a second or say it another way a DOI is resolved at the doi.org proxy once every 0.37 microseconds.We know that a lot of this usage comes from machines rather than humans but we can’t be sure how much. 19% of this usage comes from machines that have identified themselves as such but we’re pretty sure this is a low estimate of the amount of machine use.What Spider does on doi.org
Same key, five endpoints. The numbers under a cell were measured on this page.
Page to markdown
Clean text for RAG and LLM context, boilerplate removed. The lane that runs without a key.
162 ms · $0.000051Page to JSON
Spider reads the page and names the fields. Pass your own schema when you need exact keys.
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.
curl -X POST https://api.spider.cloud/scrape \
-H "Authorization: Bearer $SPIDER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"url": "https://doi.org/", "return_format": "markdown"}'from spider import Spider
app = Spider()
params = {"return_format": "markdown"}
page = app.scrape_url("https://doi.org/", params=params)
print(page[0]["content"])import { Spider } from "@spider-cloud/spider-client";
const app = new Spider();
const [page] = await app.scrapeUrl("https://doi.org/", {
return_format: "markdown",
});
console.log(page.content);What doi.org costs
Multiplied from the measured 3.7 KB page. Estimates round to the cent.
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 doi.org.
The capture above took 162 ms and cost $0.000051. The same call takes any URL on doi.org.