Fetch a Wikidata entity (Q42, P31, etc.) — structured knowledge-graph record with labels + descriptions + aliases in selectable languages, claims (property → value statements grouped by property ID), sitelinks (Wikipedia article title per language). 110M+ entities. CC0 public domain. Pass languages= as comma-separated codes (default "en") to control which language strings are included; pass maxClaimsPerProperty to cap how many statements come back per property (default 10).
/api/wikidata/entityPAYMENT-SIGNATURE.The entity API is a pay-per-call wikidata endpoint built for AI agents and autonomous software. Fetch a Wikidata entity (Q42, P31, etc.) — structured knowledge-graph record with labels + descriptions + aliases in selectable languages, claims (property → value statements grouped by property ID), sitelinks (Wikipedia article title per language).
There is no signup and no API key. An agent (or any HTTP client) hits the endpoint, receives an x402 "402 Payment Required" challenge, signs a sub-cent USDC payment on Base or Solana, and retries — the data comes back on the paid request. That makes it a drop-in entity data source for an agent tool-use loop, an MCP host, or a backend that needs wikidata data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
idrequired | string | match ^[QPLMSqplms]\d+$ |
languages | string | min 2 chars · max 100 chars |
includeClaims | boolean | |
maxClaimsPerProperty | integer | min 1 · max 50 |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/wikidata/entity?id=example&languages=en&includeClaims=true&maxClaimsPerProperty=10' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/wikidata/entity?id=example&languages=en&includeClaims=true&maxClaimsPerProperty=10' \ -H 'PAYMENT-SIGNATURE: <base64-json-payload>' # Or use the canonical runner (handles probe → sign → retry): # EVM_PRIVATE_KEY=0x... node --env-file=.env.local \ # --experimental-strip-types scripts/x402-pay.ts \ # 'https://2s.io/api/wikidata/entity?id=example&languages=en&includeClaims=true&maxClaimsPerProperty=10'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.wikidata.entity({
"id": "example",
"languages": "en",
"includeClaims": true,
"maxClaimsPerProperty": 10
})
console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)import os
from twosio import TwoS
client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])
result = client.wikidata.entity(id="example", languages="en", includeClaims=True, maxClaimsPerProperty=10)
print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
// EVM_PRIVATE_KEY funds x402 payments per call.
// claude_desktop_config.json
{
"mcpServers": {
"2sio": {
"command": "npx",
"args": ["-y", "@2sio/mcp"],
"env": { "EVM_PRIVATE_KEY": "0x..." }
}
}
}
// 2. Once the server is running, agents call this tool via standard MCP:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "wikidata.entity",
"arguments": {
"id": "example",
"languages": "en",
"includeClaims": true,
"maxClaimsPerProperty": 10
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object |
{
"ok": true,
"items": [
{
"id": "example",
"type": "example",
"pageId": 1,
"lastModified": "example",
"labels": {},
"descriptions": {},
"aliases": {},
"claimsCount": 1,
"claims": {},
"sitelinksCount": 1,
"sitelinks": {}
}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
}
}