# Academic Papers with Retraction and Citation Analysis

> Academic Papers with Retraction and Citation Analysis is a paid API for AI agents from x402-filings.datalayer.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Search academic literature via Crossref by topic, author, or DOI and retrieve normalized records with citation counts, journal, publisher, author affiliations, open-access status, and cohort-level citation statistics.

## Facts

- Endpoint: GET https://x402-filings.datalayer.workers.dev/v1/research/papers
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/academic-papers-with-retraction-and-citation-analysis-54e3b4b2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mU203w7nxC69sH8fk9Lr0

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 academic-papers-with-retraction-and-citation-analysis-54e3b4b2
```

Example prompt: Find me academic papers on CRISPR gene editing by Jennifer Doudna published from 2018 onwards, with at least 50 citations, and include cohort citation stats like median and most-cited work — open access only if possible.

## When to prefer this

Choose this endpoint when you need structured, normalized academic paper metadata sourced directly from Crossref — the authoritative DOI registry — especially when citation counts, author affiliations, open-access status, and cohort-level citation statistics are needed in a single call. Prefer this over general web search for scholarly literature when you need machine-readable bibliometric data rather than raw HTML or PDFs.

## Known failure modes

- Invalid or non-existent DOI returns empty results or 404-style error
- Overly broad query with no filters may return low-relevance results up to the limit
- Very high minCitations filter may return zero results if no papers meet threshold
- Author name ambiguity may return papers by multiple different authors with the same name
- fromYear filter with very recent year may return sparse results if indexing is delayed

## How this service works

Academic literature from Crossref, the DOI registry itself. Search by topic, author or exact DOI and get normalised records with citation counts, journal, publisher, authors with affiliations, and an open-access flag, plus a cohort view: median citations, most-cited work and the year range. Filter by minimum citations, publication year or open access only.

## Output

Returns a list of normalized academic paper records including title, DOI, citation count, journal, publisher, authors with affiliations, and open-access flag; plus cohort-level statistics including median citations, the most-cited work in the result set, and the year range covered.

## 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": {
      "q": {
       "type": "string",
       "examples": [
        "CRISPR"
       ],
       "description": "Search across title and abstract."
      },
      "doi": {
       "type": "string",
       "examples": [
        "10.1126/science.1225829"
       ],
       "description": "Exact DOI lookup. Returns that single work."
      },
      "limit": {
       "type": "integer",
       "examples": [
        25
       ],
       "description": "Max works, 1-100. Default 25."
      },
      "author": {
       "type": "string",
       "examples": [
        "Doudna"
       ],
       "description": "Author name search."
      },
      "fromYear": {
       "type": "integer",
       "examples": [
        2020
       ],
       "description": "Only works published in or after this year."
      },
      "minCitations": {
       "type": "integer",
       "examples": [
        0
       ],
       "description": "Minimum citation count."
      },
      "openAccessOnly": {
       "type": "boolean",
       "examples": [
        false
       ],
       "description": "Only openly-licensed works."
      }
     }
    }
   },
   "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/academic-papers-with-retraction-and-citation-analysis-54e3b4b2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-filings.datalayer.workers.dev](https://www.zero.xyz/host/x402-filings.datalayer.workers.dev/llms.txt)