# RC Quantum BTC Funding Surface

> RC Quantum BTC Funding Surface is a paid API for AI agents from data.rcqsignals.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-16).

Returns a normalized, cross-venue BTC perpetual funding rate surface aggregated from Bitnomial, OKX, Hyperliquid, and dYdX, with dispersion metrics, z-scores, and regime classification, Ed25519-signed.

## Facts

- Endpoint: GET https://data.rcqsignals.com/v1/fetch/btc-funding-surface
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rc-quantum-btc-funding-surface-2193b86c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4aQABqivXvoPvhM_4kPaJ

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability rc-quantum-btc-funding-surface-2193b86c
```

Example prompt: What does the current BTC perpetual funding surface look like — pull the normalized cross-venue rates from RC Quantum across Bitnomial, OKX, Hyperliquid, and dYdX, and tell me the regime state and 30-day z-scores.

## When to prefer this

Choose this endpoint when you need a multi-venue, normalized, statistically enriched view of BTC perpetual funding rather than a single-venue raw rate. It is ideal for regime detection, crowding analysis, cross-venue arbitrage screening, and risk management workflows that require Ed25519-signed, auditable data. Prefer it over single-venue funding APIs when dispersion, z-scores, or regime classification are required inputs to a decision.

## Known failure modes

- Fewer than 3 venues available — venue_count below minimum threshold may return degraded or rejected surface
- Stale data — freshness object indicates data is too old for reliable surface computation
- Payment failure — x402 payment of 0.03 USDC not processed, returns 402 status
- Venue data gap — one or more venues temporarily unavailable, full_4venue_flag will be false
- Network timeout — upstream venue feeds unresponsive, endpoint may return error or retry signal

## How this service works

BTC perpetual funding normalized across four independent venues (Bitnomial, OKX, Hyperliquid, dYdX) into one hourly surface: per-venue rates, dispersion, z-scores, regime state. Ed25519-signed. Data, not investment advice.

## Output

Returns a JSON object containing: per-venue normalized BTC perpetual funding rates keyed by venue ID (Bitnomial, OKX, Hyperliquid, dYdX), aggregate surface statistics (mean, median, min, max, std, MAD, skew, spread), 30-day z-scores for median, spread, and dispersion, regime state label (LONG_CROWDING, SHORT_CROWDING, CROSS_VENUE_DISLOCATION, REGIME_SHIFT, or NEUTRAL), positive/negative/same-sign share, 8h and 24h median and dispersion changes, a boolean indicating whether all four venues contributed, audit and provenance metadata, and an Ed25519 signature for data integrity verification.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "audit": {
       "type": "object",
       "description": "Validation provenance, including the rejected directional hypothesis"
      },
      "oracle": {
       "type": "string"
      },
      "status": {
       "type": "string"
      },
      "venues": {
       "type": "object",
       "description": "Per-venue normalized funding rate, keyed by venue id"
      },
      "license": {
       "type": "string"
      },
      "freshness": {
       "type": "object"
      },
      "timestamp": {
       "type": "string",
       "format": "date-time"
      },
      "disclaimer": {
       "type": "string"
      },
      "provenance": {
       "type": "object"
      },
      "surface_mad": {
       "type": "number"
      },
      "surface_max": {
       "type": "number"
      },
      "surface_min": {
       "type": "number"
      },
      "surface_std": {
       "type": "number"
      },
      "venue_count": {
       "type": "integer",
       "maximum": 4,
       "minimum": 3
      },
      "median_z_30d": {
       "type": "number"
      },
      "regime_state": {
       "enum": [
        "LONG_CROWDING",
        "SHORT_CROWDING",
        "CROSS_VENUE_DISLOCATION",
        "REGIME_SHIFT",
        "NEUTRAL"
       ],
       "type": "string"
      },
      "spread_z_30d": {
       "type": "number"
      },
      "surface_mean": {
       "type": "number"
      },
      "surface_skew": {
       "type": "number"
      },
      "negative_share": {
       "type": "number"
      },
      "positive_share": {
       "type": "number"
      },
      "surface_median": {
       "type": "number"
      },
      "surface_spread": {
       "type": "number"
      },
      "same_sign_share": {
       "type": "number"
      },
      "dispersion_z_30d": {
       "type": "number"
      },
      "full_4venue_flag"
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rc-quantum-btc-funding-surface-2193b86c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from data.rcqsignals.com](https://www.zero.xyz/host/data.rcqsignals.com/llms.txt)