IsingQ MCP demonstrates solid domain-specific design with clear tool composition for QUBO modeling and solving workflows. All 9 tools have explicit schemas and descriptions. Tool naming follows verb_noun patterns (get_, validate, setup, poll). Descriptions are domain-appropriate (avg ~150 chars) and explain WHEN to use each tool. However, parameter descriptions are sparse or missing for several tools (e.g., isingq_qubo_validate.qubo lacks type/format guidance; isingq_solve_start.solver_options undescribed). Output schemas are not documented. Error handling is minimal, no recovery guidance or actionable error messages visible. Security is well-considered (API key never in params, uses secure input), but no audit logging or permission gates evident.

• Add detailed parameter descriptions for isingq_qubo_validate.qubo and isingq_solve_start.solver_options. Document QUBO format (e.g., 'sparse matrix as {(i,j): coefficient} dict, coefficients in range [-1e6, 1e6], variables 0-2047').
• Document output schemas for all tools. E.g., isingq_solve_poll should return {solve_id, status, bits: [0|1], variable_map: {name: index}, energy: float, objective: float}.
• Add error handling guidance. For each tool, document: (1) what errors can occur, (2) whether they are retryable, (3) what the agent should do next. E.g., 'API key not found: call isingq_api_key_setup first.'
• Specify result limits and pagination. isingq_knowledge_get should state max topics returned; isingq_resource_list should support limit/offset or cursor-based pagination.
• Add per-tool examples in descriptions showing typical invocation and expected output. E.g., 'isingq_qubo_validate: input {(0,0): 1.5, (0,1): -2.0}, output {valid: true, variables: 2, matrix_norm: 2.5}'.