Smart, auto-routed research paper search
Smart, auto-routed research paper search. A broad field term is grounded against the OpenAlex taxonomy and returned as a coherent field cluster; a natural-language question runs hybrid retrieval over OpenAlex and Semantic Scholar with reciprocal rank fusion and a SPECTER2 embedding rerank. The response exposes the routing decision, and each paper carries title, authors, year, venue, citation count, DOI, and a relevance score. Keyless.
20000 (raw units)
price
9
calls / 30d
2
unique payers
2026-09-08
updated
Provider
api.kadec0.xyz · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x4df66B6c140778fe0717880A7c6dDE5Ea53AcDeA",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "20000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"maxItems": "15",
"q": "does zone 2 training improve mitochondrial density in older adults"
},
"type": "http"
},
"output": {
"example": {
"count": 1,
"items": [
{
"count": 15,
"grounding": null,
"mode": "hybrid",
"query": "does zone 2 training improve mitochondrial density in older adults",
"results": [
{
"citationCount": 210,
"score": 0.0163,
"specterCosine": 0.71,
"title": "Exercise training and mitochondrial biogenesis...",
"type": "paper",
"year": 2019
}
],
"routing": {
"embedded": 18,
"fusion": "openalex-only",
"isQuestion": true,
"openAlexHits": 30,
"reranked": true,
"s2Hits": 0,
"wordCount": 10
},
"type": "smart_search"
}
]
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"maxItems": {
"default": "15",
"description": "max results (1-40)",
"type": "string"
},
"q": {
"description": "a field term OR a natural-language research question",
"type": "string"
},
"rerank": {
"default": "true",
"description": "apply the SPECTER2 semantic rerank on the hybrid path",
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://api.kadec0.xyz/v1/smart-search" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://api.kadec0.xyz/v1/smart-search");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://api.kadec0.xyz/v1/smart-search")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/348.json, and this resource appears in /discovery/resources and /discovery/search.