fourzerotwo
400+ data APIs for agents: UK companies, property, trade, tenders, recalls, sanctions. Free tier
使うべきか
品質と安全性
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"data": {
"url": "https://fourzerotwo.si/mcp"
}
}
}リモートエンドポイント
https://fourzerotwo.si/mcpstreamable-httpできること
ツール一覧
ツール（3）
🟢search_apis(query, category, limit)
Find the right data endpoint for a task. Searches 500+ endpoints (UK legislation, Companies House, property prices, sanctions lists, vehicle tax, weather, earthquakes, arXiv/PubMed/Crossref papers, IP geolocation, GB electricity, ONS/World Bank/ECB economics, and more) by keyword and returns each match's tool name, parameters, price and free_tier. Always free to call. Next step: pass a returned tool name to call_api.
入力スキーマ
{
"type": "object",
"properties": {
"query": {
"type": "string",
"description": "Keywords describing the data you need; every word must match. Examples: \"postcode\", \"sanctions screen\", \"sold prices\", \"earthquake\", \"bank holiday\"."
},
"category": {
"type": "string",
"description": "Optional category filter, e.g. \"legal\", \"property\", \"finance\", \"research\", \"energy\", \"network\". See list_apis for all categories."
},
"limit": {
"type": "integer",
"minimum": 1,
"maximum": 50,
"default": 20,
"description": "Maximum results (default 20)."
}
},
"additionalProperties": false
}出力スキーマ
{
"type": "object",
"properties": {
"total": {
"type": "integer"
},
"results": {
"type": "array",
"items": {
"type": "object",
"properties": {
"tool": {
"type": "string"
},
"api": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"description": {
"type": "string"
},
"category": {
"type": "string"
},
"price_usd": {
"type": "string"
},
"free_tier": {
"type": [
"string",
"null"
],
"enum": [
"free",
"sample",
null
]
},
"params": {
"type": "array"
}
},
"required": [
"tool",
"api",
"endpoint",
"price_usd"
]
}
}
},
"required": [
"total",
"results"
]
}🟢list_apis(category)
Overview of every API group in the catalog: name, category, summary, number of endpoints and whether it has a free tier. Always free to call. Use it to browse; use search_apis to find a specific endpoint.
入力スキーマ
{
"type": "object",
"properties": {
"category": {
"type": "string",
"description": "Optional category filter, e.g. \"property\"."
}
},
"additionalProperties": false
}出力スキーマ
{
"type": "object",
"properties": {
"categories": {
"type": "array",
"items": {
"type": "string"
}
},
"apis": {
"type": "array",
"items": {
"type": "object",
"properties": {
"slug": {
"type": "string"
},
"name": {
"type": "string"
},
"category": {
"type": "string"
},
"summary": {
"type": "string"
},
"endpoints": {
"type": "integer"
},
"free_tier": {
"type": "boolean"
}
},
"required": [
"slug",
"name",
"category",
"endpoints"
]
}
}
},
"required": [
"categories",
"apis"
]
}🟢call_api(tool, arguments)
Run one endpoint by the tool name that search_apis returned, with that endpoint's parameters, and get its data back as JSON (with source and licence attribution). Endpoints with free_tier "free" or "sample" cost nothing within the daily allowance (100 calls/day anonymously, 500 with a free key). Otherwise the result is a payment request: pay in USDC via x402 and retry with _meta["x402/payment"]. Invalid arguments are rejected before any charge, and failed upstream calls are never charged.
入力スキーマ
{
"type": "object",
"properties": {
"tool": {
"type": "string",
"pattern": "^[a-z0-9-]+__[a-z0-9-]+$",
"description": "Endpoint tool name from search_apis, e.g. \"uk-postcodes__lookup\" or \"sanctions__screen\"."
},
"arguments": {
"type": "object",
"description": "The endpoint's parameters as listed in search_apis results, e.g. {\"postcode\": \"SW1A 1AA\"}.",
"additionalProperties": true
}
},
"required": [
"tool"
],
"additionalProperties": false
}出力スキーマ
{
"type": "object",
"description": "The endpoint's JSON response. Proxied sources return {data, source{name, licence, attribution}}; first-party endpoints return their own documented object. List responses are wrapped as {result: [...]}.",
"additionalProperties": true
}コミュニティ
エビデンス