Forth MCP

Forth MCP

Forth MCP is a hosted relay that exposes local, NAT'd, or firewalled MCP servers behind a single secure URL so any MCP-speaking AI client (e.g., Claude, ChatGPT) can call your local tools without port forwarding or VPN.

Forth MCP is developer tools software teams evaluate for developer tools. Use this page to review pricing, integration signals, and the best alternatives before you commit.

Freemium API Enterprise 80/100
One of 147 tools in Developer Tools
Added 1 month ago
Data reviewed Aug 29, 2026

Profile facts come from the vendor source. AiMatch labels unknown pricing or API details instead of estimating them.

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Quick Overview

Best for: Developer Tools

What it does

Developer Tools software for decision-makers comparing workflow fit and alternatives.

Best fit

Developer Tools

Pricing snapshot

Freemium from $0

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Forth MCP is a hosted relay service that places local, NAT'd, or firewalled MCP servers behind a single secure URL, enabling any MCP-speaking AI client (including Claude and ChatGPT) to access local tools without port forwarding, VPNs, or exposing the host machine. It uses a lightweight connector binary installed as a background service on Windows, macOS, or Linux that authenticates endpoints with a connector token and relays requests through the hosted Forth MCP URL and API token. The product is positioned for production use and agentic workflows, with features for multi-endpoint connectors, per-token tool allowlists, usage dashboards, quotas, and health monitoring.

Forth MCP is a hosted relay that gives Claude, ChatGPT, or any MCP client secure access to your local, NAT'd, or firewalled MCP servers — no port forwarding, no VPN. Install one lightweight connector and go.

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Key Features

Hosted relay with single secure URL

Puts local, NAT'd, or firewalled MCP servers behind one secure Forth MCP URL so clients can reach tools without port forwarding or VPN.

Lightweight connector binary

A single self-contained binary installed as a background service (Windows service, launchd agent, or systemd unit) published from the dashboard.

Multi-endpoint connectors

One connector token can authenticate every local MCP endpoint you add, including npx packages or plain HTTP addresses; endpoints can be added or removed independently.

Per-token tool permissions

Scope each API token to an allowlist of tools so different AI clients or teammates only see authorized tools.

Usage dashboards & quotas

See calls by token and by tool in real time, configure per-plan limits, threshold alerts, and use an instant kill switch.

Live health monitoring

Detect when a connector instance or endpoint drops and re-add deleted endpoints without losing the rest of the connector.

Agent session grace buffer

A grace buffer protects in-progress agent sessions so they are not hard-cut when a quota is hit.

Simple billing and caps

Flat monthly tiers with a hard usage cap to avoid metered billing surprises.

Pricing

Free Tier Available

Free tier: $0, 1 connector, 500 calls/month, all tools allowed, 7-day audit log retention, kill switch.

Free

$0
  • 1 connector
  • 500 calls / month
  • All tools, no filtering
  • 7-day audit log retention

Basic

$12/mo
  • 5 connectors
  • 5,000 calls / month
  • Per-token tool allowlists
  • 14-day audit log retention

Pro

$29/mo
  • 5 connectors
  • 12,000 calls / month
  • Per-token tool allowlists
  • 30-day audit log retention

Business

$69/mo
  • Unlimited connectors
  • 30,000 calls / month
  • Per-token tool allowlists
  • 90-day audit log retention

Use Cases

Expose local MCP servers to cloud AI clients

Allow Claude, ChatGPT, or any MCP-speaking client to call locally hosted tools without exposing the host or configuring port forwarding.

Run production fleets of tools

Manage many tool endpoints with multi-endpoint connectors, per-token allowlists, usage dashboards, quotas, and health monitoring for production environments.

Agentic workflows

Support long-running or multi-step agent sessions with a grace buffer to prevent abrupt termination when quotas are reached.

Team and role-based access

Use per-token tool permissions to limit which tools different AI clients or teammates can see and call.

Integrations

Claude

Works with Anthropic Claude as an MCP client to call local MCP endpoints through the relay.

ChatGPT

Works with ChatGPT as an MCP client to call local MCP endpoints through the relay.

Any MCP client

Supports any MCP-speaking client; endpoints can be npx packages or plain HTTP addresses.

Benefits

Secure remote access to local tools without port forwarding, VPNs, or exposing the machine.
Centralized control and observability with dashboards, per-token quotas, alerts, and kill switches.
Production-ready features for fleets and agentic workflows, including health monitoring and session grace buffering.

Limitations

No verified limitations are available.

Frequently Asked Questions

No verified FAQs are available.

Getting Started

  1. 1 Step 1: Install the connector — one binary, installed as a background service on Windows, macOS, or Linux from your dashboard.
  2. 2 Step 2: Attach your connector token — use one token to authenticate every local MCP endpoint (npx package or HTTP address).
  3. 3 Step 3: Call it from anywhere — point any MCP client at your Forth MCP URL and API token to start calling your local tools.

Support

No verified support channels are available.

API

Available: Yes
Rate Limits:

Flat per-plan hard usage caps (e.g., 500/mo free, 5,000/mo Basic, 12,000/mo Pro, 30,000/mo Business) with purchasable extra call blocks.

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