# three.ws Signals

Connects AI agents to copy-trade feeds and verified on-chain publisher rankings. Useful when automating trade monitoring or mirror-trading.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 249
- Author: nirholas
- License: Apache-2.0 · policy=link-only · description only; the file stays with the author
- Source: https://github.com/nirholas/three.ws/tree/HEAD/packages/signals-mcp
- Updated: 2026-10-24
- HTML: https://affpapa.org/en/nevibecode/mcp/threews-signals

## What it does

This server exposes the three.ws marketplace over stdio. Public discovery tools like `list_signal_feeds` and `get_mirror_leaderboard` let agents search signal providers filtered by realized edge, win-rate, and on-chain P&L without an account.

Account-scoped tools manage trading execution. The `subscribe_signal` tool configures copy-trading with position scaling and slippage caps. Setting `mode` to `simulate` evaluates performance without moving funds, while `live` charges USDC per signal via x402 and mirrors orders on-chain. Charges occur at signal delivery rather than subscription time.

Missing a `THREE_WS_API_KEY` environment variable prevents any subscription actions from executing. Calling `set_subscription_status` with `killed` freezes all trades and pending payments before transactions broadcast.

## Requirements
- Needs: Node.js (commands run via npx)
- Environment variables: `THREE_WS_BASE`, `THREE_WS_TIMEOUT_MS`, `THREE_WS_API_KEY` — keys and tokens: ask the human for the values, never commit them or put them in shared files.

## Install

### Claude Code (native platform)

**Platform CLI**
```bash
claude mcp add --env THREE_WS_BASE=<THREE_WS_BASE> --env THREE_WS_TIMEOUT_MS=<THREE_WS_TIMEOUT_MS> --env THREE_WS_API_KEY=<THREE_WS_API_KEY> --transport stdio signals-mcp -- npx -y @three-ws/signals-mcp
```
Replace <…> with your own values

### Codex

**Platform CLI**
```bash
codex mcp add signals-mcp --env THREE_WS_BASE=<THREE_WS_BASE> --env THREE_WS_TIMEOUT_MS=<THREE_WS_TIMEOUT_MS> --env THREE_WS_API_KEY=<THREE_WS_API_KEY> -- npx -y @three-ws/signals-mcp
```
Replace <…> with your own values

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "signals-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "@three-ws/signals-mcp"
            ],
            "env": {
                "THREE_WS_BASE": "<THREE_WS_BASE>",
                "THREE_WS_TIMEOUT_MS": "<THREE_WS_TIMEOUT_MS>",
                "THREE_WS_API_KEY": "<THREE_WS_API_KEY>"
            }
        }
    }
}
```
Replace <…> with your own values

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "signals-mcp": {
            "type": "stdio",
            "command": "npx",
            "args": [
                "-y",
                "@three-ws/signals-mcp"
            ],
            "env": {
                "THREE_WS_BASE": "<THREE_WS_BASE>",
                "THREE_WS_TIMEOUT_MS": "<THREE_WS_TIMEOUT_MS>",
                "THREE_WS_API_KEY": "<THREE_WS_API_KEY>"
            }
        }
    }
}
```
Replace <…> with your own values

### Gemini CLI

**Platform CLI**
```bash
gemini mcp add -e THREE_WS_BASE=<THREE_WS_BASE> -e THREE_WS_TIMEOUT_MS=<THREE_WS_TIMEOUT_MS> -e THREE_WS_API_KEY=<THREE_WS_API_KEY> signals-mcp npx -y @three-ws/signals-mcp
```
Replace <…> with your own values

## When to use it
- inspect signal provider rankings backed by verified transaction history
- test copy-trade execution in risk-free simulation mode
- automate mirror-trading on live feeds with custom SOL exposure caps
- halt subscription spend and trading executions instantly with a kill switch

## Example prompts
- Show the top signal feeds on mainnet sorted by edge score
- Subscribe agent agt_99 to feed 42 in simulate mode with 0.1 SOL base size
- Check my current subscription list and total USDC spent

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From the same set: [nirholas/three.ws](https://affpapa.org/en/nevibecode/by/nirholas/three.ws.md) — 43 cards

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