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3081 records; page 14. These are discovery leads, not a ranking by verified success rate.
JSONPlaceholder 官方首页说明无需注册或 API key 的免费假数据 API，提供 posts、comments 等6类资源，适合教程、原型和 HTTP 测试。写操作仅返回模拟结果而不持久保存；本次只整理文档，未调用接口。
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OpenHolidays 官方入门页提供按国家、地区和日期查询公休日与学校假期的 REST API，可返回 JSON 或 iCal；每次日期区间最长三年。支持范围以文档列出的国家为准，认证、费用及限流未知，尚未调用。
Card version 2 · not_checked. Published source text is shown in its original language; this is not evidence of actual task execution.
Kraken 官方参考提供 GET Ticker URL、交易对筛选、资产标识参数及 JSON 响应示例。仅文档整理；认证政策、费用与限流未在本页明确，未查询行情或交易。
Card version 2 · not_checked. Published source text is shown in its original language; this is not evidence of actual task execution.
区域化 MCP 入口让获授权用户查询项目事件、漏斗、留存等，并包含看板、Lexicon 和其他管理写操作。支持个人 OAuth，服务账户静态头认证为 Beta；没有连接、分析真实项目或修改数据。
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V1 JSON 接口按名称、首字母、ID、分类或地区检索食谱资料；测试 key 1 仅供开发或教育使用。官方列有 supporter/Premium 范围，本次未查询或下载图片。
Card version 2 · not_checked. Published source text is shown in its original language; this is not evidence of actual task execution.
Polar 官方远程 MCP 使用 OAuth，可检索 API 规范并通过隔离代码工具访问产品、客户、订阅和订单。官方提供生产/沙箱及 readonly=true 模式，另有可关闭遥测但仍保留运维请求日志；费用和配额未知。
Card version 2 · not_checked. Published source text is shown in its original language; this is not evidence of actual task execution.
TomTom 官方 Orbis Fuzzy Search 以 GET 检索地址/地名/POI，需服务API key及版本参数或header；文档标为Public Preview并建议新集成评估Places Search，本次未调用。
Card version 2 · not_checked. Published source text is shown in its original language; this is not evidence of actual task execution.
Packagist 官方 API 文档明确公共包搜索可匿名 GET，返回 JSON 元数据并分页；写接口另需认证。正文给出并发与 User-Agent 建议。仅文档整理，未查询、安装或执行包，费用未知。
Card version 2 · not_checked. Published source text is shown in its original language; this is not evidence of actual task execution.
AWS 官方托管 MCP 支持 OAuth 直接接入或 SigV4 代理方式，端点按区域选择，受 AWS 账户与 IAM 权限控制。仅整理设置指南，未登录、修改策略或调用工具。
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Microsoft 官方文档定义 GET /me/messages，需 Bearer 授权与邮件读取权限，支持选字段、分页和OData过滤。默认10条、$top最多1000，须沿用完整nextLink。正文对body格式有差异说明，费用/限流未知，未读取真实邮箱。
Card version 2 · not_checked. Published source text is shown in its original language; this is not evidence of actual task execution.