# list-citations

`station__europepmc-org__list-citations` · external (needs EXECUTION_BACKEND_URL configured) · domain `europepmc-org` · pv-relevance `pv-adjacent`

List articles that cite a given source article. Returns citing article IDs, titles, authors, and publication years. Primary use: trace signal evolution over time (how many subsequent papers cite the original safety report), measure scientific attention to a drug-event pair.

> **Note:** This tool routes through an external execution backend. If `EXECUTION_BACKEND_URL` is unset on the server, calls return JSON-RPC error `-32603 "Tool execution backend not configured"`. Tools with `backend: native` execute in-process and are always callable.

## Agent metadata

- `idempotent`: unknown
- `read_only`: unknown
- `expected_latency_ms`: unknown (not yet contract-tested)
- `cost_tokens_estimate`: unknown

## Input schema

- `source` *string* (required) — Source database of the cited article: MED, PMC, PPR, AGR, CBA.
- `id` *string* (required) — Identifier of the article whose citations you want to list.
- `pageSize` *integer* — Citations per page (1-1000, default 25).

## Example call

```json
POST /api/mcp
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__europepmc-org__list-citations",
    "arguments": {
      "source": "",
      "id": ""
    }
  }
}
```

## Related

- [/tools](/tools) — all 3062 tools
- [/tools/europepmc-org__list-citations](/tools/europepmc-org__list-citations) — HTML page
- [/tools/europepmc-org__list-citations/json](/tools/europepmc-org__list-citations/json) — JSON form (agent-friendly)
- [/api/mcp](/api/mcp) — endpoint
- [/AGENTS.md](/AGENTS.md) — agent guide