Think ToolSAFE
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
[](https://smithery.ai/server/@PhillipRt/think-mcp-server)
Official implementation of Anthropic's "think" tool as an MCP server - Dramatically improve Claude's reasoning capabilities with structured thinking.
What is the Think Tool?
This MCP server implements the exact "think" tool that Anthropic introduced in their engineering blog post. The Think Tool provides Claude with a dedicated space for structured reasoning during complex problem-solving tasks, enabling more thoughtful, accurate, and reliable responses.
Proven Performance Benefits
Anthropic's research demonstrates remarkable improvements when using the "think" tool:
- 54% improvement in complex customer service tasks
- Significantly better adherence to detailed policies and guidelines
- Enhanced consistency across multiple trials of the same task
- Improved performance on software engineering benchmarks
- Minimal implementation overhead compared to other enhancement techniques
The "think" tool excels where other approaches fall short:
- Better than extended thinking for cases requiring complex tool chains
- More effective than baseline prompting for policy-heavy scenarios
- Especially powerful when paired with optimized prompting
Quick Install
For Claude Desktop
npx -y @smithery/cli@latest install @PhillipRt/think-mcp-server --client claude --config "{}"For Cursor
npx -y @smithery/cli@latest install @PhillipRt/think-mcp-server --client cursor --config "{}"How It Works
The "think" tool implements the exact mechanism described in Anthropic's engineering blog. Unlike extended thinking (which happens before Claude starts responding), the "think" tool allows Claude to pause and reflect during its response generation.
Key mechanism: The tool doesn't perform any
95753584a5a4OBSERVED · 2026-10-07Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.
claude mcp add think-mcp-server -- npx -y [email protected]
{
"mcpServers": {
"think-mcp-server": {
"command": "npx",
"args": [
"-y",
"[email protected]"
]
}
}
}Exposed tools (1)
1 read · 0 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
think | read | Use the tool to think about something. It will not obtain new information or change the database, but just append the thought to the log. Use it when complex reasoning or some cache memory is needed. |
Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | PASS |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- none-observed
- Network
- none-observed
- Shell
- none-observed
- Dependencies
- not all pinned
- Secrets in source
- none-found
Findings (2)
@types/node, fastmcp, ts-node, typescript, zod, nodemon
Gates applied: no_behavioural_pass, no_license.
95753584a5a4full audit observations/trust-audit/mcp-server/philliprt__think-tool-3.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-07 | 95753584a5a4 | SAFE | B | 89 | first audit |
Questions
What tools does Think Tool expose?
1 in total: 1 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.
Is Think Tool safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.
What credentials does Think Tool need?
No credential environment variables were found in its source, so it appears to need none.
How current is this page?
The grade is for one exact copy of the source (95753584a5a4), read on 2026-10-07. The repository is watched and re-audited when it changes.