Trading / Signal API

1. Public market signal

No API key required. Returns Meridian proprietary bias / Asia transmission / track-record snapshot.

GET https://meridianintel.xyz/api/v1/signal
Accept: application/json

2. Rules Portfolio rebalance payload (shape)

Built from the live Rules Portfolio state (US-only H2 book + SGOV cash sweep). Example shape:

{
  "product": "meridian_signal",
  "version": "2026-07",
  "asOf": "2026-08-20",
  "portfolioId": "meridian-rules-v2",
  "currency": "USD",
  "cashWeight": 36.3,
  "totalReturnPct": 33.71,
  "rebalance": {
    "needed": true,
    "summary": "BUY LLY · SELL SGOV · ...",
    "actions": [
      {
        "symbol": "LLY",
        "action": "BUY",
        "currentWeight": 0.0,
        "targetWeight": 0.13,
        "deltaWeight": 0.13,
        "reason": "规则入场 score=78 · biotech"
      }
    ]
  },
  "positions": [
    { "symbol": "SGOV", "weight": 0.36, "price": 100.59, "currency": "USD" }
  ],
  "meta": {
    "source": "meridian-rules-portfolio",
    "disclaimer": "Non-custodial trading signal. Not investment advice."
  }
}

Authenticated pull / webhook delivery is gated to Signal subscribers. Contact support after subscribing to Portfolio Alerts to provision API keys (`msig_live_…`).

3. Auth (subscribed)

Authorization: Bearer msig_live_...
# or
X-Meridian-Api-Key: msig_live_...

4. Webhooks

On each Rules Portfolio rebalance dispatch, Meridian can POST the payload to your HTTPS endpoint with an HMAC signature header. Rotate secrets from your account after Signal subscription is active.

5. Disclaimer

Non-custodial research signal. Not investment advice. Not a broker. You execute orders at your own broker and bear all trading risk. Past demo NAV is not a guarantee of future results.