Papierkram

AnMCP(Model Context Protocol) server for thePapierkram.deaccounting API. Enables AI assistants to manage invoices, expenses, contacts, projects, time tracking and more directly in your Papierkram account.

- Node.js20+ (or Docker)
- APapierkram.deaccount with API access

npm install -g papierkram-mcp-server papierkram-mcp-server

The server talks stdio by default; setPAPIERKRAM_API_KEYandPAPIERKRAM_SUBDOMAINin your environment or your MCP client config (seeUsage).

git clone https://github.com/Wagner-Emden-IT-Services/papierkram-mcp-server.git cd papierkram-mcp-server cp .env.example .env # Edit .env with your API key and subdomain docker compose up -d

git clone https://github.com/Wagner-Emden-IT-Services/papierkram-mcp-server.git cd papierkram-mcp-server npm install cp .env.example .env # Edit .env with your API key and subdomain npm run build

PAPIERKRAM_API_KEY=your-api-key-here PAPIERKRAM_SUBDOMAIN=your-subdomain PORT=3001 # optional, only for HTTP/SSE mode

{ "mcpServers": { "papierkram": { "command": "npx", "args": ["-y", "papierkram-mcp-server"], "env": { "PAPIERKRAM_API_KEY": "your-api-key", "PAPIERKRAM_SUBDOMAIN": "your-subdomain" } } } }

Installed from source instead? Use"command": "node"with"args": ["/absolute/path/to/papierkram-mcp-server/dist/index.js"].

{ "mcpServers": { "papierkram": { "command": "npx", "args": ["-y", "papierkram-mcp-server"], "env": { "PAPIERKRAM_API_KEY": "your-api-key", "PAPIERKRAM_SUBDOMAIN": "your-subdomain" } } } }

Add to your Cursor MCP settings with the same configuration as Claude Desktop.

# Development npm run dev:http # Production npm run start:http # Docker docker compose up -d

Connect your MCP client tohttp://localhost:3001/sse.

npm run dev # stdio mode with hot reload npm run dev:http # HTTP/SSE mode with hot reload npm run build # compile TypeScript to dist/

src/ ├── index.ts # Stdio entry point ├── server/ │ ├── server.ts # MCP server setup + tool registration │ └── http-server.ts # HTTP/SSE entry point ├── core/tools/ # Tool definitions (one file per API area) + shared helpers ├── api/ │ ├── client.ts # HTTP client with auth, timeout & error handling │ ├── errors.ts # API/network errors -> actionable UserError messages │ └── format.ts # Tool-output size guard (truncation) └── config/ └── index.ts # Environment configuration

Contributions are welcome! Please open an issue or pull request.

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