feat: Add OpenAPI 3.1 spec and MCP server binary#225
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* feat: Add MCP server config loading (file + env vars) * feat: Add MCP tool definitions and HTTP proxy logic * feat: Serve OpenAPI 3.1 spec at GET /openapi.json * feat: Add MCP binary stdio entry point with JSON-RPC 2.0 protocol * fix: surface acme-dns API errors as MCP tool failures, harden mcp binary * docs: Document the MCP server and OpenAPI endpoint; expand mcp test coverage Signed-off-by: Pascal Zimmermann <pascal.zimmermann@theiotstudio.com>
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Summary
GET /openapi.json(no auth required)POST /register,POST /update,GET /health, and the admin record CRUD endpointscmd/acme-dns-mcp/binary: stdio-based MCP server wrapping the acme-dns HTTP API as structured toolsregister_subdomain,update_txt_record,list_dns_records,create_dns_record,update_dns_record,delete_dns_record,health_check~/.acme-dns-mcp/config.tomlor env vars (ACMEDNS_BASE_URL,ACMEDNS_ADMIN_TOKEN, etc.).goreleaser.ymlupdated to build and publishacme-dns-mcpalongsideacme-dnsTest Plan
go test -race ./...passesgo build ./...builds cleanlyGET /openapi.jsonreturns valid OpenAPI 3.1 JSONhealth_checktool returns{"status":"ok"}against a running instancelist_dns_recordsreturns{"records":[...]}with admin token configured{"error":"admin_token not configured"}All items above were verified end-to-end against a locally running acme-dns instance with
cmd/acme-dns-mcpcommunicating over stdio.