Tool detail

Academic Paper Search

Searches arXiv, PubMed, OpenAlex, Crossref and Semantic Scholar for papers matching a query, deduplicated and ranked.

Categories: Science health

Use when

search for academic papers on a topic across multiple databases
find recent papers in a year range sorted by citations
restrict a literature search to one source like arXiv or PubMed

Not for

not full paper text, title/abstract/authors/links only
not a single paper's full metadata, see a paper-details endpoint

Inputs

GET query params: q (string, required), source (enum, optional, default all), sort (enum, optional, default relevance), maxItems (1-50, default 20), year_from/year_to (optional)

Admitted input schema

{
  "type": "object",
  "properties": {
    "maxItems": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "1-50",
      "default": "20"
    },
    "q": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "search query / keywords"
    },
    "sort": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "enum": [
        "relevance",
        "recency",
        "citations"
      ],
      "default": "relevance"
    },
    "source": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "enum": [
        "all",
        "arxiv",
        "pubmed",
        "openalex",
        "crossref",
        "semanticscholar"
      ],
      "default": "all"
    },
    "year_from": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "earliest publication year (inclusive)"
    },
    "year_to": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "latest publication year (inclusive)"
    }
  },
  "required": [
    "q"
  ],
  "additionalProperties": false
}

Endpoint

Method: GET
URL: https://api.kadec0.xyz/v1/papers

Payment

Protocol: x402
Listed price: $0.02 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: GET https://api.kadec0.xyz/v1/papers
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z