internal/

Package agentskill carries the Agent Skill that teaches coding agents how to use mcp-tester, and installs it where each harness looks for skills.

Package appcheck checks the server side of MCP Apps (io.modelcontextprotocol/ui, SEP-1865, stable 2026-01-26): tools that link a ui:// resource, the resources themselves (MIME type, HTML) and their security metadata (CSP domains, permissions), which is what a host shows before it renders an app.

Package authcheck discovers how an MCP server over HTTP is protected (Protected Resource Metadata, authorization server metadata) and checks it against the authorization rules of spec 2026-07-28 and the auth extensions (ext-auth: OAuth client credentials, enterprise-managed authorization).

Package badge renders the "mcpcheck" status badge a project can put in its README to show that its MCP server passed mcp-tester.

Package conformance checks MCP results the way a strict client checks them, so a server fails here rather than in someone's editor.

Package httpcheck probes a Streamable HTTP MCP endpoint with hand-built requests and compares the answers with the transport rules of spec revision 2026-07-28: request metadata headers, error codes and HTTP status, Origin validation and the removal of sessions and GET streams.

Package scripting provides a simple script runner for testing MCP tools.

Package skillcheck lists the skills a server publishes (Skills extension, io.modelcontextprotocol/skills) and checks them against the extension and the Agent Skills format: manifests, frontmatter, digests, error codes.