# Saylor Innovations DOI Citation Report

> Saylor Innovations DOI Citation Report is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-03).

Resolves a DOI identifier into normalized publication metadata including title, authors, citation text, publisher, year, and source links.

## Facts

- Endpoint: GET https://saylorinnovations.com/api/research/doi?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-doi-citation-report-50ff6f14
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UI6KRZKersQYpeN0cqMfS

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 saylor-innovations-doi-citation-report-50ff6f14
```

Example prompt: Can you look up the DOI 10.1038/nature12345 and give me the full citation — title, authors, journal, year, publisher, and how many times it's been cited?

## When to prefer this

Use this endpoint when you need fast, normalized bibliographic metadata for a known DOI — including formatted citation text and citation counts — without needing abstracts or full paper text. Ideal for building reference lists, verifying authorship, or enriching research databases with structured publication data.

## Known failure modes

- Invalid or malformed DOI returns an error response
- DOI not found in the underlying data source returns no results
- Network timeout if the upstream metadata provider is slow
- Missing optional fields (year, publisher, citedByCount) may be null if not available in source data

## How this service works

Resolve a DOI into normalized publication metadata, citation text, identifiers and source links. Abstracts and full paper text are excluded.

## Output

A JSON object containing the resolved DOI URL, paper title, list of authors, formatted citation string, publisher, publication/journal name, publication year, cited-by count, reference count, and the source name and URL used to retrieve the data, along with a retrieval timestamp.

## 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",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "POST",
      "PUT",
      "PATCH",
      "DELETE",
      "HEAD"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "doi"
     ],
     "properties": {
      "doi": {
       "type": "string",
       "description": "DOI identifier, optionally prefixed with https://doi.org/."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "service",
      "subject",
      "retrievedAt",
      "source",
      "report"
     ],
     "properties": {
      "report": {
       "type": "object",
       "required": [
        "doi",
        "title",
        "authors",
        "citation"
       ],
       "properties": {
        "doi": {
         "type": "string"
        },
        "url": {
         "type": "string"
        },
        "type": {
         "type": [
          "string",
          "null"
         ]
        },
        "year": {
         "type": [
          "integer",
          "null"
         ]
        },
        "title": {
         "type": "string"
        },
        "authors": {
         "type": "array",
         "items": {
          "type": "string"
         }
        },
        "citation": {
         "type": "string"
        },
        "publisher": {
         "type": [
          "string",
          "null"
         ]
        },
        "publication": {
         "type": [
          "string",
          "null"
         ]
        },
        "citedByCount": {
         "type": [
          "integer",
          "null"
         ]
        },
        "referenceCount": {
         "type": [
          "integer",
          "null"
         ]
        }
       }
      },
      "source": {
       "type": "object",
       "required": [
        "name",
        "url"
       ],
       "properties": {
        "url": {
         "type": "string",
         "format": "uri"
        },
        "name": {
         "type": "string"
        }
       }
      },
      
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-doi-citation-report-50ff6f14/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)