# Recommender Systems Publication Sample Breakdown

> Recommender Systems Publication Sample Breakdown is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Returns a sample breakdown of academic publications on recommender systems using Crossref publisher metadata, including DOI references and source attribution.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/signal-research-recommendation-systems-sample-breakdown?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/recommender-systems-publication-sample-breakdown-0b30028c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bq0m1y4t-1mnHHZACHgPf

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 recommender-systems-publication-sample-breakdown-0b30028c -d '<json body>'
```

Example prompt: Can you pull a sample breakdown of publications on recommender systems — give me up to 15 results with their DOI references and source attribution from Crossref metadata?

## When to prefer this

Choose this endpoint when you need a fast, low-cost sample of academic publications on recommender systems with DOI references and Crossref source attribution. It is ideal for seeding literature reviews, building bibliographies, or verifying Crossref coverage for recommendation-related topics. Prefer this over general academic search APIs when DOI traceability and publisher metadata attribution are specifically needed.

## Known failure modes

- Query term returns no matching publications in Crossref — empty results array returned
- max_results exceeds maximum of 30 — validation error returned
- Query string exceeds 200 character limit — request rejected
- Crossref upstream unavailable — service error or timeout
- Payment not processed — x402 payment required error

## How this service works

recommender systems: Publication sample breakdown: Publication sample breakdown on recommender systems using Crossref publisher metadata. Returns DOI references and source attribution. Query can be overridden; sample summaries are labelled.

## Output

Returns a structured list of publication samples related to the query, including DOI references and source attribution labels. Sample summaries are labelled and the query can be overridden. Results are drawn from Crossref publisher metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "default": "recommender systems",
   "maxLength": 200
  },
  "max_results": {
   "type": "integer",
   "default": 10,
   "maximum": 30,
   "minimum": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/recommender-systems-publication-sample-breakdown-0b30028c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)