# FiatDock Academic Paper Search

> FiatDock Academic Paper Search is a paid API for AI agents from fiatdock.com, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-11).

Search ~250M academic papers (via OpenAlex/Crossref) by query, year range, and open-access filter, returning title, authors, year, venue, DOI, citation count, and abstract.

## Facts

- Endpoint: GET https://fiatdock.com/v1/papers/search?utm_source=zero.xyz
- Price: $0.009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fiatdock-academic-paper-search-a686bd8e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lZ5E-mhdzJadXLcbYAUuL

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 fiatdock-academic-paper-search-a686bd8e
```

Example prompt: Search for the top 10 most-cited academic papers on large language model agents published between 2022 and 2024, and only include ones with a free full-text copy available.

## When to prefer this

Choose this endpoint when an AI agent needs to discover, summarize, or retrieve metadata for academic and scientific papers at scale, especially when citation counts, DOIs, abstracts, and open-access links are needed. It is ideal for literature reviews, research discovery, and bibliometric analysis across all fields. Prefer over general web search when structured scholarly metadata is required, or when filtering by year range and open-access availability matters.

## Known failure modes

- No results found for the query — not charged; returns empty result set
- OpenAlex unavailable — Crossref fallback used automatically, may return fewer fields
- Query too long (>200 characters) — request rejected
- Invalid year range (fromYear > toYear) — may return empty or error
- Payment failure — call not processed if x402 payment is rejected

## How this service works

Find academic papers in any field - title, authors, year, venue, DOI, citation count, open-access link and abstract - from OpenAlex (~250M works incl. arXiv and PubMed; Crossref answers if OpenAlex is down). Filter by year range and open access; sort by relevance, citations or date. Send {} to search the published example query. A search with no result is not charged. Pay-per-call via x402.

## Output

A ranked list of up to 25 papers, each containing: title, author list, publication year, venue/journal name, DOI, citation count, open-access PDF link (if available), and abstract. Results are sourced from OpenAlex (~250M works including arXiv and PubMed) with Crossref as a fallback.

## 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": [],
     "properties": {
      "sort": {
       "enum": [
        "relevance",
        "cited",
        "recent"
       ],
       "type": "string",
       "example": "relevance",
       "description": "Order: relevance (default with a query), cited (most cited first, default without one) or recent"
      },
      "limit": {
       "type": "integer",
       "example": 10,
       "maximum": 25,
       "minimum": 1,
       "description": "How many papers, 1-25, default 10"
      },
      "query": {
       "type": "string",
       "example": "large language model agents",
       "maxLength": 200,
       "description": "What to search for (title and abstract; full text too when sorting by relevance) — an empty body searches the published example"
      },
      "toYear": {
       "type": "integer",
       "example": 2026,
       "maximum": 2100,
       "minimum": 1800,
       "description": "Latest publication year"
      },
      "fromYear": {
       "type": "integer",
       "example": 2023,
       "maximum": 2100,
       "minimum": 1800,
       "description": "Earliest publication year"
      },
      "openAccessOnly": {
       "type": "boolean",
       "example": false,
       "description": "Only papers with a free full-text copy (default false)"
      }
     }
    }
   },
   "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/fiatdock-academic-paper-search-a686bd8e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fiatdock.com](https://www.zero.xyz/host/fiatdock.com/llms.txt)