# agentsvc.io Academic Paper Search

> agentsvc.io Academic Paper Search is a paid API for AI agents from agentsvc.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).

Search academic papers across OpenAlex, arXiv, and PubMed by keyword query with optional filters for source, year, and open access status

## Facts

- Endpoint: POST https://agentsvc.io/api/v1/proxy/paper-search?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentsvc-io-academic-paper-search-7eac9719
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KntsLsgc2beewdWnlc-Os

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 agentsvc-io-academic-paper-search-7eac9719 -d '<json body>'
```

Example prompt: Search for up to 15 recent academic papers on 'transformer attention mechanisms' published after 2021 from all sources, and include only open access papers.

## When to prefer this

Choose this endpoint when an agent needs to discover academic or scientific literature from multiple authoritative sources (OpenAlex, arXiv, PubMed) in a single call. Prefer it over general web search when the user explicitly wants peer-reviewed papers, preprints, or citation data. Ideal for literature reviews, research discovery, and finding open-access PDFs. Not suitable for fetching full paper text or for non-academic content.

## Known failure modes

- Empty results if the query is too specific or niche for indexed databases
- Source-specific errors if one database (e.g. PubMed) is temporarily unavailable, reported in source_errors field
- Rate limiting or payment failure if USDC balance is insufficient on Base
- Partial results if one or more sources return errors while others succeed
- Abstract may be truncated for long papers

## How this service works

86 APIs for AI agents: web scraping and crawling to Markdown, AI summaries, data extraction and cited answers, screenshots and PDF, PDF, OCR and document conversion, news, paper and developer search and more, paid per call with USDC on Base, Solana, Polygon or Arbitrum via x402. No account, no API key, free sample on every service.

## Output

Returns a JSON object containing a list of matching papers, each with title, authors, abstract snippet, DOI, URL, PDF URL, publication year, venue name, source database, and citation count (where available). Also includes total count, list of sources queried, timestamp of the search, and any per-source errors.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "default": 10,
   "maximum": 25,
   "minimum": 1
  },
  "query": {
   "type": "string"
  },
  "source": {
   "enum": [
    "all",
    "openalex",
    "arxiv",
    "pubmed"
   ],
   "type": "string",
   "default": "all"
  },
  "year_from": {
   "type": "integer",
   "description": "Only papers published in or after this year"
  },
  "open_access_only": {
   "type": "boolean",
   "default": false
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "count": 2,
   "query": "retrieval augmented generation",
   "papers": [
    {
     "doi": "10.18653/v1/2023.emnlp-main.495",
     "url": "https://doi.org/10.18653/v1/2023.emnlp-main.495",
     "year": 2023,
     "title": "Active Retrieval Augmented Generation",
     "venue": "Conference on Empirical Methods in Natural Language Processing (EMNLP)",
     "source": "openalex",
     "authors": [
      "Zhengbao Jiang"
     ],
     "pdf_url": "https://aclanthology.org/2023.emnlp-main.495.pdf",
     "abstract": "Zhengbao Jiang, Frank Xu, Luyu Gao, Zhiqing Sun, Qian Liu, Jane Dwivedi-Yu, Y...",
     "citations": 457
    }
   ],
   "sources": [
    "openalex"
   ],
   "searched_at": "2026-10-06T14:30:54.495Z",
   "source_errors": {}
  },
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentsvc-io-academic-paper-search-7eac9719/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentsvc.io](https://www.zero.xyz/host/agentsvc.io/llms.txt)