Jarvis Market Signals — MCP server

Live crypto-derivatives and market signals for AI agents: perp liquidations, funding-rate crowding, open-interest positioning, safe stablecoin yield, and FX — fresh streaming data a static model can't know, served over a metered MCP endpoint.

Endpoint: https://jarvis.tail12fa6b.ts.net:8443/mcp (streamable HTTP) Free tier: 100 calls/day — open an issue to get a key. Discovery is open: initialize and tools/list need no key, so any MCP client or registry scanner can inspect the tools before authenticating.

Tools

Tool	What it returns	Live source
`liquidation_summary`	Market-wide perp liquidations over the last N minutes: long vs short notional, dominant side, top coins — the cascade / short-squeeze signal	Bybit liquidation stream, 24/7 ingester
`coin_liquidations`	One coin's liquidations: long vs short notional + the largest single prints	Bybit liquidation stream
`funding_rates`	Current perp funding rates with the most-stretched rates surfaced (crowding / carry signal); optional per-coin filter	Bybit tickers
`perp_positioning`	Whether leveraged positioning is BUILDING or UNWINDING: open-interest change + funding crowding + which side is getting liquidated, with a plain-language read	Bybit OI/funding snapshots + liquidation stream
`best_stable_yield`	Safe single-asset stablecoin lending yields (reputable audited protocols, >$50M TVL), emission-discounted ranking, honest hold-vs-deploy verdict vs the T-bill floor	DefiLlama
`convert_currency`	Fiat FX conversion at the live ECB mid-market rate — deterministic arithmetic LLMs get wrong	ECB reference rates

Liquidation and positioning tools query a rolling 24-hour buffer fed by always-on ingesters; window_minutes is capped to that buffer.

Quick start

Claude Code

Terminal

claude mcp add --transport http jarvis-market-signals https://jarvis.tail12fa6b.ts.net:8443/mcp --header "Authorization: Bearer YOUR_KEY"

Cursor / generic MCP client config

config.json

{
  "mcpServers": {
    "jarvis-market-signals": {
      "url": "https://jarvis.tail12fa6b.ts.net:8443/mcp",
      "headers": { "Authorization": "Bearer YOUR_KEY" }
    }
  }
}

curl (no key needed for discovery)

Terminal

curl -s -X POST https://jarvis.tail12fa6b.ts.net:8443/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

tools/call requires Authorization: Bearer <key> (or x-api-key). Without one you get a plain JSON 401.

Auth and limits

Anonymous: initialize, tools/list — open for discovery.
Keyed: tools/call — Authorization: Bearer jvk_…, free tier 100 calls/day (rolling 24h), HTTP 429 over quota.
No OAuth; keys are issued manually via GitHub issue while the service is small.

Notes

Market data is informational only — not financial advice. Yield figures are estimates from public feeds; verify before acting.
The server runs on dedicated home infrastructure behind a Tailscale Funnel TLS relay; brief maintenance windows can occur.
Source for the gateway lives in a private repo; this repo is the public listing, key-request channel, and issue tracker.