AgAgently
Se

Sequential Thinker

Hosted MCP

Structured reasoning tools: dependency-ordered plans, revisable step-by-step thinking, and plan critiques.

by PromptLabs Studio5.0(1)869 installs#reasoning#planning#decomposition#critique

About this skill

Use case

Anthropic's Sequential Thinking server is a top-10 MCP by search volume. This hosted take adds planning and critique: goals decomposed with dependencies and risk flags, thinking that revises itself out loud, and a red-team review for plans you already have.

Example prompts

  • "Plan the steps to migrate our billing from seats to usage-based"
  • "Critique this launch plan for hidden dependencies"

Connect in under a minute

  1. Choose a plan (the free tier needs no card).
  2. Copy your license key from the dashboard.
  3. Add the endpoint to your MCP client:
claude mcp add sequential-thinker https://stg.agently.tokyocorp.net/mcp/sequential-thinker \
  --transport http \
  --header "Authorization: Bearer YOUR_LICENSE_KEY"

Works the same in Cursor and ChatGPT developer mode — every successful tool call is metered, failed calls are never billed.

Tools included

plan_stepsDecompose a complex goal into a dependency-ordered step plan
think_throughReason through a hard problem step by step, revising as it goes
critique_planStress-test an existing plan: gaps, risks, sequencing errors

Reviews

5.0(1)The self-revision is realLena Fischer · 7/20/2026

Watched it contradict its own step 3 and fix it with a reason. That's the behavior you want in a planner.