# Knowledge Graph Construction: Publication Sample Breakdown

> Knowledge Graph Construction: 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 2026-10-17).

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

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/signal-research-knowledge-graphs-sample-breakdown?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/knowledge-graph-construction-publication-sample-breakdown-b200567c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nvrtBeoNy7FF161LX07qB

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 knowledge-graph-construction-publication-sample-breakdown-b200567c -d '<json body>'
```

Example prompt: Can you pull a sample breakdown of academic publications on knowledge graph construction — give me up to 15 results with DOI references and source attribution?

## When to prefer this

Choose this endpoint when you need a quick, pre-sampled snapshot of academic publications on knowledge graph construction with DOI links and Crossref-sourced attribution, without needing to build a full search query from scratch. It is particularly useful for literature scoping, citation gathering, or domain surveys where a labeled sample is sufficient. Prefer a more comprehensive academic search API if you need full-text access, citation counts, or coverage beyond Crossref.

## Known failure modes

- Query too long (exceeds 200 characters) returns validation error
- max_results out of range (below 1 or above 30) triggers schema rejection
- Crossref upstream unavailability may return empty or partial result sets
- Overly niche or misspelled query terms may yield zero matching publications

## How this service works

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

## Output

A set of labeled publication summaries (up to 30) covering knowledge graph construction, each with a DOI reference and source attribution derived from Crossref publisher metadata. Results are returned as structured records suitable for citation, research scoping, or literature review.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/knowledge-graph-construction-publication-sample-breakdown-b200567c/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)