This MCP server provides a protocol-compliant gateway to HarperDB, exposing data as standardized Resources accessible through JSON-RPC calls. It implements the MCP methods resources/list and resources/read via a single /mcp endpoint and uses JSON-RPC 2.0 for all requests and responses. The server sources data from HarperDB tables and custom resources, presenting each as a Resource with a URI, name, and description, and supports filtering with query parameters (attribute=value) and equals comparison. It also supports pagination through limit and start to control result sets. A static capabilities endpoint at /capabilities.json enumerates predefined capabilities. The API is designed for read-only access to Harper data and supports security via HarperDB’s authentication mechanisms (Basic, JWT, mTLS). Accessibility is constructed using URIs of the form {HOST}/{table_name} for tables and {HOST}/{path}/{resource_name} for custom resources. The Harper MCP server is deployed via Harper’s npm package and Operation API, with deployment examples shown in the README.