Searches OpenAlex and Crossref for publications and returns each with its DOI, a
Searches OpenAlex and Crossref for publications and returns each with its DOI, authors and their affiliations, publication year, venue, abstract, citation count and, where one exists, a direct link to a legally free full text with the licence it is offered under. OpenAlex stores abstracts as an inverted word index rather than text; it is reconstructed here, because the raw structure is unusable. Results can be filtered by year and restricted to open access.
Answeringour last check, 2026-10-18
1 of 1checks answered this week
939 msmedian answer time
$0.005listed price per call
$0.005price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://research.halowerk.com/v1/paper-search
| Category | Search and research |
|---|---|
| Provider host | research.halowerk.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.005 | 939 ms |
Example input (from the provider)
{
"body": {
"doi": "beispiel",
"query": "beispiel"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"author": {
"description": "Restrict to an author name.",
"maxLength": 200,
"type": "string"
},
"doi": {
"description": "Exact DOI. Either this or query.",
"maxLength": 200,
"type": "string"
},
"from_year": {
"description": "Earliest publication year.",
"maximum": 2100,
"minimum": 1600,
"type": "integer"
},
"limit": {
"default": 10,
"description": "How many results.",
"maximum": 25,
"minimum": 1,
"type": "integer"
},
"open_access_only": {
"default": false,
"description": "Only publications with a free full text.",
"type": "boolean"
},
"query": {
"description": "Search terms. Either this or doi.",
"maxLength": 300,
"type": "string"
},
"sort": {
"default": "relevance",
"description": "Result ordering.",
"enum": [
"relevance",
"citations",
"newest"
],
"type": "string"
},
"to_year": {
"description": "Latest publication year.",
"maximum": 2100,
"minimum": 1600,
"type": "integer"
}
},
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}