# Hugging Face Papers Search

> Hugging Face Papers Search is a paid API for AI agents from api.fadeandco.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).

Searches Hugging Face's arXiv paper index by keyword, returning titles, abstracts, publish dates, upvotes, comment counts, and arXiv links

## Facts

- Endpoint: GET https://api.fadeandco.workers.dev/api/dev/huggingface-papers?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hugging-face-papers-search-b3c8f154
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wckh_2JMVqINH8TND_od4

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 hugging-face-papers-search-b3c8f154
```

Example prompt: Search Hugging Face papers for 'mixture of experts' and show me the top 5 results with their titles, abstracts, upvote counts, and arXiv links.

## When to prefer this

Use this endpoint when you need to search AI/ML research papers with community popularity signals (upvotes, comments) from Hugging Face, rather than raw arXiv search. It's ideal when you want papers that the ML practitioner community has curated and engaged with, not just the most recently submitted. Prefer this over general arXiv search when community traction matters.

## Known failure modes

- No results returned for highly niche or misspelled queries
- Query exceeds 100 characters — rejected with validation error
- Limit parameter out of range (must be 1–30) causes bad request
- Hugging Face search backend unavailable — upstream error
- Rate limiting or payment failure returns 402 or 429 status

## How this service works

Hugging Face Papers search: arXiv papers matching a query with title, abstract summary, publish date, community upvotes, comment count and arXiv link. Public search API; ranking is Hugging Face's.

## Output

Returns a ranked list of arXiv papers (up to 30) matching the query, each with: paper title, abstract summary, publish date, number of community upvotes on Hugging Face, comment count, and a direct arXiv link. Ranking is determined by Hugging Face's own algorithm.

## 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": "Search words, 1 to 100 characters"
      },
      "limit": {
       "type": "string",
       "description": "How many papers, 1 to 30 (default 10)"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hugging-face-papers-search-b3c8f154/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.fadeandco.workers.dev](https://www.zero.xyz/host/api.fadeandco.workers.dev/llms.txt)