# Reasoning scaffold tools for AI agents (slim) > 1 reasoning scaffolds ranked by the Anchor benchmark. Leader Sequential Thinking (MCP reference server) (B). Tools that make no external calls and exist to structure an agent's own thinking. - Full: https://www.anchorterminal.com/categories/reasoning.md (~700 tokens) · this version ~230 tokens · JSON https://www.anchorterminal.com/categories/reasoning.json · canonical https://www.anchorterminal.com/categories/reasoning - Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05 - Tools: 1 · agent-ready (BB+): 0 · accept x402: 0 · JSON: https://www.anchorterminal.com/api/v1/tools.json · by capability: https://www.anchorterminal.com/api/v1/capabilities.json - Capabilities: reasoning.scaffold | # | Tool | Grade | Score | Confidence | x402 | Auth | Where | Slim | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 214 | Sequential Thinking (MCP reference server) | B | 62.7 | medium | no | None | local | https://www.anchorterminal.com/tools/sequential-thinking-reference-server.min.md |