FieldCure.Mcp.PublicData.Kr 1.0.2

FieldCure.Mcp.PublicData.Kr

Korean public data API gateway. An MCP server that lets any MCP client discover, inspect, and call 80,000+ APIs on data.go.kr.

Tools

Quick Start

dotnet tool install -g FieldCure.Mcp.PublicData.Kr

Prerequisites

1. Sign up at data.go.kr and get your API key (data.go.kr 회원가입 후 인증키 발급)
2. Subscribe to 목록조회서비스 (Required) — discover_api and describe_api depend on this API (discover_api, describe_api 도구가 이 API를 사용합니다)
3. Subscribe to each individual API you want to query (조회하려는 개별 API도 각각 활용신청 필요)

API key resolution

The server resolves the data.go.kr serviceKey lazily on the first tool call using the chain defined in ADR-001:

1. --api-key <value> CLI arg (debug/manual only — not the recommended path)
2. DATA_GO_KR_API_KEY environment variable (primary)
3. PUBLICDATA_API_KEY environment variable (legacy — retained for backward compatibility)
4. MCP Elicitation — if the client supports it, the server requests the key via an in-session prompt. The resolved key is cached in memory for the session; it is never persisted to disk by the server. On 401/403 the cache is invalidated and a re-elicit is attempted (capped at 2 retries per session to prevent loops).
5. Soft-fail — if none of the above yield a key, tools/list still works and each tool returns a JSON error explaining that DATA_GO_KR_API_KEY must be set or that the client must support MCP Elicitation.

Claude Desktop

{
  "mcpServers": {
    "publicdata-kr": {
      "command": "fieldcure-mcp-publicdata-kr",
      "env": {
        "DATA_GO_KR_API_KEY": "YOUR_DATA_GO_KR_API_KEY"
      }
    }
  }
}

VS Code (Copilot)

{
  "servers": {
    "publicdata-kr": {
      "command": "fieldcure-mcp-publicdata-kr",
      "env": {
        "DATA_GO_KR_API_KEY": "YOUR_DATA_GO_KR_API_KEY"
      }
    }
  }
}

AssistStudio

Install the dotnet tool first. AssistStudio does not auto-install external MCP servers. Without the fieldcure-mcp-publicdata-kr command on PATH the connection fails with a generic "server shut down unexpectedly" message.

dotnet tool install -g FieldCure.Mcp.PublicData.Kr

Then: Settings > MCP Servers > Add Server:

Configuration

Naming note: the API key follows the external service naming convention (DATA_GO_KR_API_KEY), while server-local configuration uses the PUBLICDATA_ prefix. This keeps the key aligned with data.go.kr's own documentation so users don't have to configure it twice, while local tunables stay grouped under a single package namespace.

Requirements

• .NET 8.0 Runtime or later

See Also

Part of the AssistStudio ecosystem.

Links

• GitHub
• License: MIT
• MCP Specification