# Scientific Evidence Search for Procurement

> Scientific Evidence Search for Procurement is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Searches the live web for scholarly articles, systematic reviews, and evidence-based literature specifically focused on procurement topics.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/demand-web-scientific-evidence-procurement?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scientific-evidence-search-for-procurement-0dc4f0f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qJsUppJwxAjWsDcDpYZoy

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 scientific-evidence-search-for-procurement-0dc4f0f0 -d '<json body>'
```

Example prompt: Find me up to 8 peer-reviewed papers and systematic reviews on sustainable procurement practices — I need scholarly evidence for a policy brief.

## When to prefer this

Choose this endpoint when you need evidence-based, scholarly, or peer-reviewed sources specifically about procurement topics. Prefer it over general web search when academic credibility and systematic review coverage matter. It is particularly useful for policy briefs, academic reports, or compliance documentation requiring cited literature.

## Known failure modes

- Query too vague returns irrelevant or off-topic academic sources
- Live web search outage causes empty or error response
- max_results set to 0 or outside 1-10 range triggers validation error
- Highly niche procurement subtopics may yield limited peer-reviewed results

## How this service works

Scientific evidence search for Procurement: Find scholarly sources and evidence reviews. Uses live web search; provide query to focus the search.

## Output

A list of up to 10 scholarly sources related to the procurement query, including titles, links, and summaries drawn from live web search results targeting academic and evidence-review content.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "default": "peer reviewed paper systematic review evidence Procurement",
   "description": "Optional focused search query."
  },
  "max_results": {
   "type": "integer",
   "default": 5,
   "maximum": 10,
   "minimum": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scientific-evidence-search-for-procurement-0dc4f0f0/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)