The Toolbox MCP server,
connected in one click.
Small tools for agent builders: AI-writing tells, tools/list token cost, CLAUDE.md lint, and more. Connect the official Toolbox MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Toolbox to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http toolbox https://toolbox.allthepossibles.com/mcpRun in your terminal, then restart Claude Code.
Toolbox · https://toolbox.allthepossibles.com/mcp
What your AI can do with Toolbox
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “check_tells”: Check text for AI-writing tells (em-dashes, 'not just X but Y', rule-of-three lists, stock vocabulary like delve or seamlessly, hedge words,.”
“Use “manifest_cost”: Estimate what an MCP server's tools/list costs in tokens on every session start, per tool, with the three most expensive tools and flags for.”
“Use “lint_agent_md”: Lint a CLAUDE.md, AGENTS.md or MEMORY.md: line count against Claude Code's 200-line memory index cap, estimated tokens, duplicate lines, con.”
“Use “mcp_install_snippets”: Generate install snippets for an MCP endpoint (Claude Code, Claude Desktop, Cursor, Codex, VS Code, curl) and probe the endpoint once to con.”
How secure is the Toolbox MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Toolbox holds up.
Official endpoint
Operated by Toolbox (allthepossibles.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Toolbox adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Toolbox
Choose Toolbox in the gate directory. No sign-in needed.
Use it anywhere
Toolbox's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Toolbox exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
check_tells — Check text for AI-writing tells (em-dashes, 'not just X but Y', rule-of-three lists, stock vocabulary like delve or seamlessly, hedge words,
manifest_cost — Estimate what an MCP server's tools/list costs in tokens on every session start, per tool, with the three most expensive tools and flags for
lint_agent_md — Lint a CLAUDE.md, AGENTS.md or MEMORY.md: line count against Claude Code's 200-line memory index cap, estimated tokens, duplicate lines, con
mcp_install_snippets — Generate install snippets for an MCP endpoint (Claude Code, Claude Desktop, Cursor, Codex, VS Code, curl) and probe the endpoint once to con
check_ai_crawlers — Read a site's robots.txt and report which AI crawlers (GPTBot, ClaudeBot, Google-Extended, PerplexityBot, CCBot, Bytespider and more) are al
check_headers — Fetch a URL once and grade its response headers: HSTS, Content-Security-Policy, X-Content-Type-Options, frame control, Referrer-Policy, Perm
check_page_meta — Fetch a URL and report what crawlers and link unfurlers see: title and meta description with lengths, canonical, lang, viewport, robots meta
json_to_schema — Turn a JSON sample (or an array of samples of the same shape) into a JSON Schema draft 2020-12 and a TypeScript type. Infers required vs opt
+ 5 more tools once connected
Who runs the Toolbox MCP server?
The Toolbox MCP server at a glance
https://toolbox.allthepossibles.com/mcpQuestions, answered
Is there an official Toolbox MCP server?
Yes — Toolbox operates its own remote MCP server at toolbox.allthepossibles.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Toolbox to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Toolbox in the directory. No account or sign-in is needed. From then on, Toolbox's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Toolbox runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Toolbox MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Toolbox in minutes. No credit card required.
Connect more than just Toolbox
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Toolbox in: Claude · Claude Code · ChatGPT · Cursor · VS Code