# Public Health Surveillance Literature Search

> Public Health Surveillance Literature Search is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Searches academic literature on public health surveillance topics using Crossref publisher metadata, returning DOI references and source attribution.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/signal-research-public-health-literature-search?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/public-health-surveillance-literature-search-331752ac
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_U1frBMaEAhXR6y9u6i00-

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 public-health-surveillance-literature-search-331752ac -d '<json body>'
```

Example prompt: Search Crossref for academic literature on public health surveillance and return the top 10 DOI references with source attribution.

## When to prefer this

Choose this endpoint when you need citable academic DOI references specifically on public health surveillance topics, sourced from Crossref's publisher metadata. It is ideal for literature reviews, policy briefs, or research background tasks where DOI-linked scholarly citations are required. Prefer it over general web search endpoints when you need structured bibliographic metadata rather than raw web content.

## Known failure modes

- Query returns zero results if the search term is too narrow or obscure
- max_results exceeding 30 will be rejected by schema validation
- Crossref metadata may be incomplete for older or grey literature publications
- Payment failure if USDC balance is insufficient for the $0.01 per-call fee
- Query string exceeding 200 characters will be rejected

## How this service works

public health surveillance: Literature search: Literature search on public health surveillance using Crossref publisher metadata. Returns DOI references and source attribution. Query can be overridden; sample summaries are labelled.

## Output

A list of academic literature results including DOI references and source attribution, drawn from Crossref publisher metadata, relevant to the public health surveillance query.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/public-health-surveillance-literature-search-331752ac/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)