sequential-thinking

A local reasoning tool that helps an agent work through a problem in separate, revisable steps.

In plain words
What is it for?
Use it when solving tasks that need staged reasoning, revisions, or explicit progress through several connected thoughts.
Why use it?
It provides a structured place to organize and reconsider a multi-step line of thought.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

Part of the open-agent-hub plugin — 46 skills, 3 commands, 5 agents, 6 MCP servers shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add mcp/guanyang/open-agent-hub/sequential-thinking
Clone the repo
git clone --depth 1 https://github.com/guanyang/open-agent-hub

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Or install open-agent-hub, the plugin that ships this one along with the rest of its 46 skills, 3 commands, 5 agents, 6 MCP servers.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

sequential-thinking scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.mcp.json · 9 lines

What it actually says

{
  "sequential-thinking": {
    "command": "npx",
    "args": [
      "-y",
      "@modelcontextprotocol/[email protected]"
    ]
  }
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 9 lines scan A ecdb7aafb6aa

Subscribe to this mod's changes

sequential-thinking is an MCP server published in the GitHub repository guanyang/open-agent-hub (958 stars, last pushed 2d ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.