330 production AI-agent services for data, validation, AI, crypto, and x402 pay-per-use. Connect the official SignalHarness.ai 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
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http signalharness-ai https://signalharness.ai/api/agent/services/mcpRun in your terminal, then restart Claude Code.
SignalHarness.ai · https://signalharness.ai/api/agent/services/mcp
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “list_services”: List public SignalHarness machine-invokable services.”
“Use “get_service”: Get one public service by its exact service_id.”
“Use “invoke_service”: Invoke one public service. If payment is required, returns the canonical x402 V2 challenge plus the equivalent x402 V1 challenge without ret.”
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how SignalHarness.ai holds up.
gate scanned 3 tools on Sep 22, 2026. A few things are worth a look before you connect.
Operated by SignalHarness.ai (signalharness.ai) at its documented MCP endpoint — not a third-party mirror or community re-host.
This server only exposes public data — no account and no credentials are involved when you connect.
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
If SignalHarness.ai adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Choose SignalHarness.ai in the gate directory. No sign-in needed.
SignalHarness.ai'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
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
list_services — List public SignalHarness machine-invokable services.
get_service — Get one public service by its exact service_id.
invoke_service — Invoke one public service. If payment is required, returns the canonical x402 V2 challenge plus the equivalent x402 V1 challenge without ret
https://signalharness.ai/api/agent/services/mcpYes — SignalHarness.ai operates its own remote MCP server at signalharness.ai. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
Add gate's gateway URL to your AI client once, then pick SignalHarness.ai in the directory. No account or sign-in is needed. From then on, SignalHarness.ai's tools are available in every client you've connected to gate.
No. SignalHarness.ai runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
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.
Yes — you can get started with gate for free and connect SignalHarness.ai in minutes. No credit card required.
Every server below works through the same gateway URL — connect once, add tools anytime.
Set up SignalHarness.ai in: Claude · Claude Code · ChatGPT · Cursor · VS Code
One URL. All MCPs. Full control. Free to start.
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