Academic Paper Search

Search scholarly works by keyword, year and open-access status. Returns titles, authors, citations, abstracts and available publication links.

Pay by wallet (x402) academic-paper-search

Example

Example answer

{
  "query": "large language models",
  "papers": [
    {
      "doi": "https://doi.org/10.1016/j.lindif.2023.102274",
      "type": "article",
      "title": "ChatGPT for good? On opportunities and challenges of large language models for education",
      "venue": "Learning and Individual Differences",
      "authors": [
        "Enkelejda Kasneci"
      ],
      "abstract": null,
      "openalex_id": "https://openalex.org/W4323655724",
      "cited_by_count": 6326,
      "is_open_access": true,
      "open_access_url": "https://epub.ub.uni-muenchen.de/125071/1/ChatGPT_for_Good_v3.pdf",
      "landing_page_url": "https://doi.org/10.1016/j.lindif.2023.102274",
      "publication_date": "2023-03-09",
      "publication_year": 2023
    }
  ],
  "returned": 1,
  "total_results": 4370190
}

Inputs

Field	Type	Required	What it is
`sort`	string	No	relevance (default), cited (most cited first) or date (newest first)
`limit`	integer	No	Results to return, 1-25. Default: 10
`query`	string	Yes	Free-text search (title, abstract, full text). At least 2 characters.
`year_to`	integer	No	Latest publication year (inclusive)
`year_from`	integer	No	Earliest publication year (inclusive)
`open_access_only`	boolean	No	Only return works with a free full-text copy

Output fields

How reliably each field appears in a successful answer.

Field	Type	Appears
`query`	string	Always (present in every successful answer)
`papers`	array	Always (present in every successful answer)
`returned`	number	Always (present in every successful answer)
`total_results`	number	Always (present in every successful answer)

How to call it

The same tool through each route. MCP clients reach it through Strale’s server at https://api.strale.io/mcp; the call below is what the agent sends.

# Needs an API key. max_price_cents caps what this call may cost.
curl -X POST https://api.strale.io/v1/do \
  -H "Authorization: Bearer $STRALE_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
    "capability_slug": "academic-paper-search",
    "inputs": {
      "query": "array programming numpy",
      "limit": 3
    },
    "max_price_cents": 3
  }'

{
  "tool": "strale_execute",
  "arguments": {
    "slug": "academic-paper-search",
    "inputs": {
      "query": "array programming numpy",
      "limit": 3
    },
    "max_price_cents": 3
  }
}

import { Strale } from "straleio";

const strale = new Strale({ apiKey: process.env.STRALE_API_KEY! });
const result = await strale.do({
  capability_slug: "academic-paper-search",
  inputs: {
    "query": "array programming numpy",
    "limit": 3
  },
  max_price_cents: 3,
});

import os
from straleio import Strale, DoRequest

strale = Strale(api_key=os.environ["STRALE_API_KEY"])
result = strale.do(DoRequest(
    capability_slug="academic-paper-search",
    inputs={
        "query": "array programming numpy",
        "limit": 3,
    },
    max_price_cents=3,
))

# No account. The first request answers 402 with the price in USDC;
# an x402 client pays it from your wallet and repeats the request.
curl -i -X POST https://api.strale.io/x402/v2/academic-paper-search \
  -H 'Content-Type: application/json' \
  -d '{
    "query": "array programming numpy",
    "limit": 3
  }'

Limitations

Abstracts may be missing or shortened
Many publishers do not supply abstracts to OpenAlex, so `abstract` is often null. Returned abstracts are limited to 800 characters.
What to do instead: Use paper-details with the DOI, or follow landing_page_url / open_access_url for the full text.
Recent papers and citation counts may lag
OpenAlex refreshes from Crossref, PubMed and repositories on a rolling basis; very recent papers may be missing or under-cited.
What to do instead: For preprints of the last few days, use arxiv-search.