DEPRECATED — Opus 4.7 uses adaptive thinking (optional at each step) and Sonnet 4.6 handles structured chain-of-thought natively. For most tasks, prompting "Think carefully and step-by-step; this is harder than it looks" elicits the required depth. This methodology is retained as a reference pattern when deterministic, reviewable reasoning traces are required (audits, proofs, post-hoc analysis) regardless of the model's adaptive-thinking choice.

Sequential Thinking

Structured, reflective problem-solving methodology that replaces the Sequential Thinking MCP server's sequentialthinking tool with zero-cost instructional prompting.

Replaces: @modelcontextprotocol/server-sequential-thinking (1 tool, ~1,800 tokens/turn saved)

Quick Reference