This is a test fixture server with minimal tool definitions. All three tools (ping, read_tool, write_tool) are defined in test code (internal/e2e/fixture/main_test.go) with only trivial descriptions and empty input schemas ({}). No parameter descriptions, no output schemas documented, no error handling guidance. Tools appear to be test stubs rather than production-grade definitions. The server is designed for interoperability testing, not as a functional MCP server.

• Add explicit input schemas with typed parameters and descriptions. E.g., read_tool should specify what 'fixture_id' or 'fixture_name' it accepts, with type (string), constraints (min/max length), and description.
• Expand tool descriptions to 50-200 characters. Include WHAT the tool does, WHEN to call it, and WHAT it returns. E.g., 'Reads fixture data by ID. Returns fixture metadata and content. Call this before write_tool to validate fixture structure.'
• Document output schemas for each tool. Specify returned fields, types, and whether results are paginated. E.g., read_tool returns {fixture_id: string, content: string, created_at: ISO8601}.
• Rename tools to be more specific and action-oriented. 'read_tool' → 'read_fixture_data', 'write_tool' → 'write_fixture_data'. Add verb clarity.
• Add error handling patterns. Specify which errors are retryable (network timeout) vs user-fixable (invalid fixture_id). Provide recovery hints: 'Fixture not found. Call list_fixtures() to see available IDs.'

Inferred effective spec: <=2025-11-25.

• Relies on Dynamic Client Registration (deprecated) - use Client ID Metadata Documents (CIMD)