# Causal Inference Structured Citation Records

> Causal Inference Structured Citation Records 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 structured citation records (DOIs and source attribution) on causal inference research using Crossref publisher metadata.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/signal-research-causal-inference-citation-records?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/causal-inference-structured-citation-records-b590926c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_y88KAV8wkcqc1vJxujVKN

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 causal-inference-structured-citation-records-b590926c -d '<json body>'
```

Example prompt: Can you pull up to 15 structured citation records on causal inference, with DOIs and source attribution, from Crossref publisher metadata?

## When to prefer this

Choose this endpoint when you need ready-made, structured bibliographic citation records specifically on causal inference, complete with DOIs and Crossref-sourced publisher attribution, without having to query Crossref directly or parse raw API responses yourself. It is ideal for research assistants, literature review agents, or citation management workflows that need fast, low-cost access to verified academic references in a consistent structured format.

## Known failure modes

- Query string exceeds 200 character limit — request rejected
- max_results out of range (below 1 or above 30) — validation error
- Crossref upstream unavailable — empty or partial result set
- No matching citations found for the given query — empty results array
- Payment failure via x402 protocol — call not processed

## How this service works

causal inference: Structured citation records: Structured citation records on causal inference using Crossref publisher metadata. Returns DOI references and source attribution. Query can be overridden; sample summaries are labelled.

## Output

A list of structured citation records on causal inference, each including a DOI reference and source/publisher attribution derived from Crossref metadata. Results are bounded by the max_results parameter (1–30, default 10).

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/causal-inference-structured-citation-records-b590926c/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)