# Extract DOIs from Web Page

> Extract DOIs from Web Page is a paid API for AI agents from page.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Fetches a web page URL and extracts all Digital Object Identifiers (DOIs) found in the page text and markup, returning deduplicated results with counts (up to 300 items).

## Facts

- Endpoint: GET https://page.intel.rallylive.ca/page/extract/dois?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/extract-dois-from-web-page-d65ad816
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_V1aH739D-T9ZGSCeDtxNd

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability extract-dois-from-web-page-d65ad816
```

Example prompt: Pull all the DOIs mentioned on this page — https://www.nature.com/articles/s41586-023-06419-4 — and give me the deduplicated list with counts.

## When to prefer this

Choose this endpoint when you need to extract DOIs specifically from a web page without writing custom HTML parsing logic. It is ideal for academic research workflows, citation auditing, and bibliography compilation where the target page is a standard HTML document containing DOI strings or links. Prefer this over general-purpose scrapers when you only care about DOI identifiers and want a clean, deduplicated output at low cost ($0.01 per page).

## Known failure modes

- URL is unreachable or returns a non-200 HTTP status — endpoint may return an error or empty result
- Page uses JavaScript rendering and DOIs are loaded dynamically — static fetch may miss JS-rendered content
- Page has no DOIs — returns empty list
- More than 300 unique DOIs on page — only first 300 returned
- Malformed or non-standard DOI formats may not be captured by the regex patterns used

## How this service works

Extract dois from a web page: fetches the URL and returns every dois found in the page text and markup (deduplicated, with counts and up to 300 items), so an agent gets the values without parsing HTML. $0.01 per page.

## Output

A deduplicated list of up to 300 DOIs found in the page text and HTML markup, each with an occurrence count indicating how many times it appeared on the page.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/extract-dois-from-web-page-d65ad816/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from page.intel.rallylive.ca](https://www.zero.xyz/host/page.intel.rallylive.ca/llms.txt)