# Scout ArXiv Academic Paper Search

> Scout ArXiv Academic Paper Search is a paid API for AI agents from scout.hugen.tokyo, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10, last successful call 2026-05-05).

Searches ArXiv for academic papers and preprints in AI, machine learning, computer science, and mathematics

## Facts

- Endpoint: GET https://scout.hugen.tokyo/scout/arxiv?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Last successful call: 2026-05-05
- Success rate: 100% of calls made through Zero
- Rating: 4.0 / 5 from 1 review
- Activations on Zero: 23
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scout-hugen-tokyo-4482721f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Gd1OwR1iCtL53xxMaziML

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 scout-hugen-tokyo-4482721f
```

Example prompt: Search ArXiv for recent papers on diffusion models for image generation and give me the titles, authors, and abstracts of the top results.

## When to prefer this

Choose this endpoint when you need to search specifically ArXiv preprints and papers in AI, ML, CS, or mathematics. Prefer this over Semantic Scholar when you want the raw preprint source with ArXiv IDs and categories, or when you specifically need access to the latest unpublished preprints. Use Semantic Scholar sibling endpoint if citation graph and citation counts are more important.

## Known failure modes

- No papers found for obscure or very niche queries — returns empty result set
- Query too broad returns irrelevant results across multiple subfields
- ArXiv API rate limiting or downtime causes upstream failure
- Payment not processed — 402 response if USDC payment fails
- Malformed query string causes 400 error

## How this service works

Search ArXiv for academic papers and preprints in AI, machine learning, CS, and mathematics. AI agent API for scientific research. Accepts USDC payments on Base and Solana

## Output

A list of ArXiv papers matching the query, including paper titles, author names, abstracts, arXiv IDs, submission/update dates, and subject category tags from the ArXiv preprint repository.

## Example request

```json
{
 "q": "neural networks",
 "recency": "week",
 "per_page": 5
}
```

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "required": [
    "method"
   ],
   "properties": {
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scout-hugen-tokyo-4482721f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from scout.hugen.tokyo](https://www.zero.xyz/host/scout.hugen.tokyo/llms.txt)