Is Sequential Thinking MCP server safe?
- npm prepare hook
- MCP tool surface detected
@modelcontextprotocol/server-sequential-thinking is an AI npm_package analyzed by SkillTotal's deterministic static scanner. The scan found no malicious indicators, though 2 risky constructs are reported for review. It can: install time execution and mcp tools detected — capabilities are what the code can do, not a verdict on intent. Risk score 0/100 (low).
@modelcontextprotocol/server-sequential-thinking 2026.8.31
Automated static-analysis result. It can contain false positives and false negatives, and is not a claim about the intent of Sequential Thinking MCP server's authors. Report a false positive.
Behavioral traits
How this component maps to the CSA agentic threat model. Descriptive — it never affects the risk score.
Findings (2)
package.json has a 'prepare' script (runs on git/local installs and before publishing).
"prepare": "npm run build",
Why it matters: Usually a build step, but confirm it doesn't fetch or run remote code.
Fix: Usually a legitimate build step; confirm it only builds and does not fetch or execute remote code.
An MCP tool surface (manifest or tool definitions) was found.
const server = new McpServer({server.registerTool("sequentialthinking", {Why it matters: Just context — review which tools it offers and their permissions.
Fix: Review the declared MCP tools and their permissions.
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Scan your own componentHow we determine this: deterministic static analysis (regex + AST), evidence-anchored, no code execution. Methodology →