Does Sequentialthinking (reference) work with Claude Code?

Q: Does Sequentialthinking (reference) work with Claude Code?

Yes. In our test on 2026-10-13 (Claude Code 2.1.296 (Claude Code), plan: Claude Pro), Sequentialthinking (reference) passed install, connect, tools and an agent task.

Yes. Sequentialthinking (reference) passed every step of our test in Claude Code on Oct 13, 2026: it installed, connected, its tools were visible, and an agent used it to finish a real task.

Result

ResultPassed

Date testedOct 13, 2026

Plan tested onClaude Pro

App version2.1.296 (Claude Code)

Modelhaiku

Steps

install OK
connected OK
tools visible OK
agent task: stepwise reasoning OKfor reasoning scratchpads that have no storage

From our own harness run, not the maker’s claims. How we test.

What happened in this run

Install config we used

claude mcp add -s local ref-sequentialthinking -- npx -y @modelcontextprotocol/server-sequential-thinking

Connection check

ref-sequentialthinking: npx -y @modelcontextprotocol/server-sequential-thinking - ✔ Connected

Tools check

verified via task step: agent saw and called the server's tools

Agent task: stepwise reasoning

Tool calls, in order: mcp__ref-sequentialthinking__sequentialthinking

Raw details from our harness log for this run. Secrets redacted.

Set it up in Claude Code

Copy-paste config for every app is on the Sequentialthinking (reference) page. Not connecting? Claude Code MCP troubleshooting.

Other apps we tested it in: Cursor (passed) · Claude Desktop (passed) · ChatGPT (Codex) (passed).

All MCP servers tested in Claude Code