# Suverse Crossref Journal Search

> Suverse Crossref Journal Search is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Search the Crossref database for academic journals by title or keyword, returning journal metadata including publisher, ISSN, and article counts.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-crossref-journals
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/suverse-crossref-journal-search-80cdb073
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-8uqHj1j1j8z25yPJKwW1

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 suverse-crossref-journal-search-80cdb073 -d '<json body>'
```

Example prompt: Search Crossref for academic journals related to 'machine learning in healthcare' and show me the titles, publishers, ISSNs, and how many articles each journal has published.

## When to prefer this

Choose this endpoint when you need to discover or validate academic journals by name or subject area without requiring an API key. It is ideal for agents performing literature review setup, journal disambiguation, ISSN validation, or identifying publication venues in a research domain. Prefer it over manual Crossref API access when you want a simple proxied call with no authentication overhead.

## Known failure modes

- No journals found for an obscure or misspelled keyword — returns empty results
- Ambiguous keyword returns many loosely related journals requiring further filtering
- Crossref upstream unavailability causes timeout or 502 error
- Payment of 0.003 USDC not fulfilled causes 402 response before any data is returned
- Very broad keywords return too many results to be useful without refinement

## How this service works

Search Crossref for academic journals by title or keyword, no key. Returns journals with title, publisher, ISSN, and article counts. For AI agents discovering venues and validating journal identifiers.

## Output

Returns a list of matching academic journals from the Crossref database, each with the journal title, publisher name, ISSN(s), and total article count indexed in Crossref.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/suverse-crossref-journal-search-80cdb073/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proxy.suverse.io](https://www.zero.xyz/host/proxy.suverse.io/llms.txt)