Forth MCP
Forth MCP — hosted relay giving remote AI clients access to your local MCP servers.
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What is Forth MCP?
Forth MCP is a hosted relay service that exposes local MCP servers to remote AI clients (Claude, ChatGPT, etc.) via a secure URL, without requiring port forwarding, VPN, or machine exposure. It runs as a lightweight background service and handles NAT/firewall traversal automatically.
Forth MCP pricing
Pricing model: Freemium
Free (500 calls/month, 1 connector) + $12/mo Basic (5K calls), $29/mo Pro (12K calls), $69/mo Business (30K calls, unlimited connectors); additional call blocks available
Forth MCP pros
- No infrastructure complexity—single binary installer runs as a background service on Windows, macOS, or Linux
- One connector token authenticates multiple local endpoints (npx packages, HTTP addresses) independently
- Per-token tool allowlists let you scope which tools each client or teammate can access
- Real-time usage dashboards, health monitoring, and configurable quotas with alerts and instant kill switch
- Built for agentic workflows with grace buffer to prevent hard cuts mid-task
Forth MCP cons
- Free tier is restrictive (500 calls/month, 1 connector only); minimum paid plan is $12/mo
- Requires installing and running a connector on your local machine continuously
- Audit log retention is limited even on paid plans (max 90 days on Business plan)
Frequently asked questions about Forth MCP
Do I need port forwarding or VPN?
No. Forth MCP securely exposes your local servers without exposing your machine or requiring VPN or port forwarding.
Does it work with AI clients other than Claude?
Yes, it works with Claude, ChatGPT, and any MCP-speaking AI client.
Can I control which tools different clients can access?
Yes, you can scope each API token to an allowlist of tools, so different clients or teammates only see what they need.
What happens if I exceed my monthly call limit?
Limits are configurable by plan with threshold alerts. You can buy extra call blocks, or use the kill switch to immediately cut access.