The costheta MCP server,
connected in one click.
Verifiable physical randomness from cosmic-ray detections. Free beacon, paid signed decisions. Connect the official costheta 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 costheta 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 costheta https://costheta.dev/mcpRun in your terminal, then restart Claude Code.
costheta · https://costheta.dev/mcp
What your AI can do with costheta
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “costheta_random”: Free public random outcome anchored to the latest signed cosmic-ray coincidence pulse. This is a shared beacon: every caller sees the same l.”
“Use “costheta_decide”: Paid x402 Base mainnet tool: commit-and-reveal decision with a signed certificate. Requires PAYMENT-SIGNATURE and idempotency_key.”
“Use “costheta_witness”: Paid x402 Base mainnet tool: witness a caller commitment against a signed pulse certificate. Requires PAYMENT-SIGNATURE and idempotency_key.”
How secure is the costheta MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how costheta holds up.
Official endpoint
Operated by costheta (costheta.dev) 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 costheta 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 costheta
Choose costheta in the gate directory. No sign-in needed.
Use it anywhere
costheta'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 costheta exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
costheta_random — Free public random outcome anchored to the latest signed cosmic-ray coincidence pulse. This is a shared beacon: every caller sees the same l
costheta_decide — Paid x402 Base mainnet tool: commit-and-reveal decision with a signed certificate. Requires PAYMENT-SIGNATURE and idempotency_key.
costheta_witness — Paid x402 Base mainnet tool: witness a caller commitment against a signed pulse certificate. Requires PAYMENT-SIGNATURE and idempotency_key.
Who runs the costheta MCP server?
The costheta MCP server at a glance
https://costheta.dev/mcpQuestions, answered
Is there an official costheta MCP server?
Yes — costheta operates its own remote MCP server at costheta.dev. 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 costheta to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick costheta in the directory. No account or sign-in is needed. From then on, costheta's tools are available in every client you've connected to gate.
Do I need to host anything?
No. costheta runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the costheta 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 costheta in minutes. No credit card required.
Connect more than just costheta
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up costheta in: Claude · Claude Code · ChatGPT · Cursor · VS Code