# Europe PMC Life Science Article Search

> Europe PMC Life Science Article Search is a paid API for AI agents from project-api-gamma-sable.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Searches the Europe PMC database for life science and biomedical articles, returning slim JSON results with UI links and open-access IDs

## Facts

- Endpoint: GET https://project-api-gamma-sable.vercel.app/paid/europepmc/search?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/europe-pmc-life-science-article-search-89b286e1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0CKO5RnyFGVcf0YU1Zj3l

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 europe-pmc-life-science-article-search-89b286e1
```

Example prompt: Search Europe PMC for articles about CRISPR gene editing and give me up to 10 results with links to read them.

## When to prefer this

Choose this endpoint when you need to programmatically search Europe PMC's biomedical and life science literature database and are willing to pay $0.01 USDC per query via the x402 protocol on Base. Prefer this over direct Europe PMC API calls when you want a pre-wrapped, monetized, agent-friendly interface that returns slim JSON with UI links and open-access identifiers. Best suited for agents that need to discover academic articles by keyword or topic rather than retrieve full-text content.

## Known failure modes

- HTTP 402 returned if payment is not provided via x402 protocol
- Empty items array if query matches no results
- Invalid or missing 'query' parameter causes request failure
- Rate limiting or server errors from upstream Europe PMC API
- Malformed cursor or cursorMark values may break pagination

## How this service works

Paid public-data feeds. Unpaid requests return HTTP 402. Prices are USDC on Base.

## Output

Returns a slim JSON object with a list of matching life science article records from Europe PMC, each including article identifiers, open-access status flags, and a UI link to view the full record on the Europe PMC website. The response includes a source path and a 'what' descriptor field.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "query"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Free-text query"
      },
      "term": {
       "type": "string",
       "description": "Search term"
      },
      "limit": {
       "type": "string",
       "description": "Max results"
      },
      "query": {
       "type": "string",
       "description": "Search / SPARQL query"
      },
      "cursor": {
       "type": "string",
       "description": "Query param: cursor"
      },
      "pageSize": {
       "type": "string",
       "description": "Query param: pageSize"
      },
      "cursorMark": {
       "type": "string",
       "description": "Query param: cursorMark"
      },
      "resultType": {
       "type": "string",
       "description": "Query param: resultType"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "what": "Europe PMC life-sci article search (slim JSON + uiLink; OA IDs)",
  "items": [],
  "source": "/paid/europepmc/search"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/europe-pmc-life-science-article-search-89b286e1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from project-api-gamma-sable.vercel.app](https://www.zero.xyz/host/project-api-gamma-sable.vercel.app/llms.txt)