API 信用使用情况

你需要 登录 或者 报名 使用 BuiltWith API. 登录后,您的实际 API 密钥将显示在这里。

重要提示:这不是 BuiltWith MCP 服务器。

此 API 用于查找其他 MCP 服务器。 它会搜索并浏览 BuiltWith 在网络上发现的远程 MCP 服务器注册表。它是一个用于 MCP 服务器发现的 REST API,而不是 BuiltWith 自身工具的 MCP 协议端点。

要将 MCP 客户端连接到 BuiltWith MCP 服务器,请访问 https://api.builtwith.com/llms.txt 有关连接说明和 BuiltWith 工具参考。

介绍

The MCP API searches and browses the BuiltWith MCP registry - the list of other remote MCP (Model Context Protocol) servers that BuiltWith has discovered across the web, published at builtwith.com/mcp-registry. This is a plain REST endpoint (JSON/XML/CSV/TXT), not an MCP protocol endpoint itself.

This is particularly useful for AI agents and MCP clients that need to discover which remote MCP servers exist for a given task - for example finding payments, CRM, or developer-tool MCP servers by keyword or category before connecting to them.

This endpoint is free of charge and does not use API credits. It is rate limited to 1 request per second per API key.

This data is also exposed as a tool via the BuiltWith MCP server (https://api.builtwith.com/mcp).

验证

每次查询时,您都必须提供 API 密钥。我们的端点仅支持 HTTPS,并提供密钥加密。 永远不要暴露您的 API 密钥。

您的 API 密钥是
00000000-0000-0000-0000-000000000000

您可以将密钥作为查询字符串参数或 HTTP 标头提供:

  • 查询字符串: ?KEY=00000000-0000-0000-0000-000000000000
  • HTTP 标头: Authorization: API 00000000-0000-0000-0000-000000000000
工作示例

JSON 在注册表中搜索与关键字匹配的 MCP 服务器
https://api.builtwith.com/mcp2/api.json?KEY=00000000-0000-0000-0000-000000000000&SEARCH=payments

JSON 按类别列出 MCP 服务器,第二页(结果 101-200)
https://api.builtwith.com/mcp2/api.json?KEY=00000000-0000-0000-0000-000000000000&CATEGORY=developer-tools&OFFSET=100

JSON 在特定类别内搜索
https://api.builtwith.com/mcp2/api.json?KEY=00000000-0000-0000-0000-000000000000&SEARCH=stripe&CATEGORY=ecommerce

XML 在注册表中搜索与关键字匹配的 MCP 服务器
https://api.builtwith.com/mcp2/api.xml?KEY=00000000-0000-0000-0000-000000000000&SEARCH=payments

CSV 在注册表中搜索与关键字匹配的 MCP 服务器
https://api.builtwith.com/mcp2/api.csv?KEY=00000000-0000-0000-0000-000000000000&SEARCH=payments

TXT 在注册表中搜索与关键字匹配的 MCP 服务器
https://api.builtwith.com/mcp2/api.txt?KEY=00000000-0000-0000-0000-000000000000&SEARCH=payments

回复

Results are records containing Domain, Category, Description, and an Endpoints array. Each endpoint contains its URL, whether authentication is required, its supported Tools (methods), and its complete Overview discovery object when available. Overview can include instructions, protocolVersion, serverInfo, capabilities, and additional fields reported by the remote MCP server. Results are sorted alphabetically by domain, up to 100 per page.

[
  {
    "Domain": "example.com",
    "Category": "Developer Tools",
    "Description": "Example MCP server description",
    "Endpoints": [
      {
        "Endpoint": "https://example.com/mcp",
        "AuthRequired": true,
        "Tools": [
          { "Name": "search_orders", "Description": "Search orders by customer or status" }
        ],
        "Overview": {
          "instructions": "Use this server to search and manage orders.",
          "protocolVersion": "2025-06-18",
          "serverInfo": { "name": "example-orders", "version": "1.0.0" },
          "capabilities": { "tools": { "listChanged": false } }
        }
      }
    ]
  }
]

CSV and TXT responses flatten Endpoints into a single column and include a separate Overview column containing the endpoint URL and its JSON overview. TXT is tab-separated with no header row.

Domain,Category,Description,Endpoints,Overview
example.com,Developer Tools,Example MCP server description,"https://example.com/mcp [search_orders, get_order]","https://example.com/mcp: {""instructions"":""Use this server to search and manage orders.""}"

SEARCH matches against the domain, description, endpoint URLs, tool names/descriptions, and overview instructions - so searching for a method name or an instruction keyword finds matching MCP servers, not just matching domains.

Pagination metadata is returned as response headers rather than in the body: X-TOTAL-COUNT (total matches), X-OFFSET (the requested offset), X-PAGE-SIZE (always 100), and X-HAS-MORE (true/false). Pass a larger OFFSET to fetch the next page.

类别

The public categories endpoint lists every valid CATEGORY slug, its friendly label, and its current entry count. It does not require an API key or use API credits.

https://api.builtwith.com/mcp2/categories.json

XML and CSV are also available at /mcp2/categories.xml and /mcp2/categories.csv.

蛞蝓标签数数
ai---machine-learningAI & Machine Learning851
analyticsAnalytics624
api-toolsAPI Tools372
browser-toolsBrowser Tools9
cloud-servicesCloud Services43
collaborationCollaboration45
content-toolsContent Tools722
data-collectionData Collection732
databasesDatabases55
designDesign58
developer-toolsDeveloper Tools913
devopsDevOps46
ecommerceeCommerce879
game-developmentGame Development59
general-toolsGeneral Tools980
learning-resourcesLearning Resources173
marketingMarketing317
productivityProductivity709
security---testingSecurity & Testing358
social-mediaSocial Media93
API 参考
  • KEY (required): your BuiltWith API key.
  • SEARCH (optional): matches against the MCP server's domain, description, endpoint URLs, tool (method) names/descriptions, and overview instructions. At least one of SEARCH or CATEGORY is required.
  • CATEGORY (optional): a category slug from the categories reference. At least one of SEARCH or CATEGORY is required.
  • OFFSET (optional, default 0): pagination offset; page size is fixed at 100 results.
  • Formats: json, xml, csv, and txt.
  • Credit cost: free - this endpoint does not use API credits.
  • Rate limit: 1 request per second per API key, tighter than the general API rate limit, since this endpoint is free.
特殊域名

我们维护两个列表,供您在查找域名时使用。“忽略”列表和“BuiltWith 后缀”列表。

忽略列表
T这是我们内部不予索引的域名列表。这些域名要么被屏蔽,要么包含太多误导性技术,要么包含太多包含用户生成内容的子域名。

BuiltWith 后缀列表
这是基于 公共后缀列表 但对于拥有子域名的公司来说,还包括许多额外的条目,这些子域名应被视为顶级域名。 此列表为我们提供了内部网站的更好可见性,例如,它将 northernbeaches.nsw.gov.au 置于 nsw.gov.au 之上。

忽略域 (XML, JSON or TXT)
https://api.builtwith.com/ignoresv1/api.json
后缀域 (XML, JSON or TXT)
https://api.builtwith.com/suffixv1/api.json
错误代码

请注意,这种格式的错误消息无法保证,您的实现也应该将非 200 响应代码视为错误。 如果错误与服务器相关,则 Lookup 属性将为 null(json)或未提供(xml)。 查看所有潜在的格式正确的错误代码.

使用条款

我们的 标准条款 涵盖我们所有 API 的使用。

一般来说,您可以使用 API 以多种方式增强您的产品。唯一的限制是您不能按原样转售数据,也不能向builtwith.com及其相关服务提供重复的功能。