# Saylor Innovations INSPIRE-HEP Paper Search

> Saylor Innovations INSPIRE-HEP Paper Search is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Search the INSPIRE-HEP high-energy physics literature database by topic, returning paper metadata including title, authors, citations, arXiv ID, DOI, journal, and abstract

## Facts

- Endpoint: GET https://saylorinnovations.com/api/papers/inspire-hep?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-inspire-hep-paper-search-6ae5610c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hz-f1XJ1gw0zLksROM9lR

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-inspire-hep-paper-search-6ae5610c
```

Example prompt: Search INSPIRE-HEP for the top 10 most cited papers on dark matter detection and show me the title, authors, citation count, and arXiv ID for each.

## When to prefer this

Choose this endpoint when you specifically need high-energy physics and particle physics literature from the INSPIRE-HEP database, which is the authoritative source for that domain. Prefer it over the sibling OpenAlex endpoint when you need INSPIRE-specific metadata (arXiv IDs, INSPIRE citation counts, HEP-specific paper types) or when the query is natively expressed in INSPIRE query syntax. Use the OpenAlex endpoint instead for broader cross-disciplinary academic search across 250M+ works.

## Known failure modes

- No papers found for highly specific or misspelled queries — returns empty papers array
- Invalid INSPIRE query syntax may return unexpected results or an error
- Limit parameter outside 1–20 range may be rejected or clamped
- Network or upstream INSPIRE-HEP API downtime causing 502 or timeout
- Payment failure (x402) if USDC balance is insufficient

## How this service works

Search INSPIRE-HEP high-energy physics papers by topic - title, authors, citation count, date, arXiv id, DOI, journal and abstract, most cited or most recent

## Output

Returns a JSON object with the interpreted query, sort order applied, total matching papers, and a list of up to 20 paper records each containing title, authors, author count, date, paper type, arXiv ID, DOI, journal reference, abstract, citation count, and canonical URL, plus a source label and optional caveat note.

## 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",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Topic, title or INSPIRE query syntax"
      },
      "limit": {
       "type": "string",
       "description": "optional 1-20, default 8"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "query",
      "papers"
     ],
     "properties": {
      "note": {
       "type": "string",
       "description": "Caveat or context for reading the result"
      },
      "sort": {
       "type": "string",
       "description": "Sort order applied"
      },
      "count": {
       "type": "number",
       "description": "Number of items returned"
      },
      "query": {
       "type": "string",
       "description": "The query as the server interpreted it"
      },
      "total": {
       "type": "number",
       "description": "Total number of matching items"
      },
      "papers": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "doi": {
          "description": "Digital object identifier"
         },
         "url": {
          "description": "Canonical URL"
         },
         "date": {
          "description": "Date (YYYY-MM-DD)"
         },
         "type": {
          "description": "Type or kind"
         },
         "arxiv": {
          "type": [
           "string",
           "null"
          ],
          "description": "arXiv identifier"
         },
         "title": {
          "description": "Title"
         },
         "authors": {
          "description": "Author names"
         },
         "journal": {
          "type": [
           "string",
           "null"
          ],
          "description": "Journal reference"
         },
         "abstract": {
          "description": "Abstract text"
         },
         "citations": {
          "ty
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-inspire-hep-paper-search-6ae5610c/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)