# cbBTC/USDC Cross-Venue Spread Statistics (Base)

> cbBTC/USDC Cross-Venue Spread Statistics (Base) is a paid API for AI agents from api.agentfeeds.jp, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Returns 1-minute cross-venue bid-ask spread statistics in basis points for cbBTC/USDC on Base, comparing Uniswap v3 0.05% vs Aerodrome Slipstream 0.05% pools using on-chain mid prices.

## Facts

- Endpoint: GET https://api.agentfeeds.jp/v1/dex/spreads/cbbtc
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cbbtc-usdc-cross-venue-spread-statistics-base-74916dbd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ejE0FTV32Vt2OHA234Mat

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 cbbtc-usdc-cross-venue-spread-statistics-base-74916dbd
```

Example prompt: Can you pull the latest 1-minute spread stats in basis points for cbBTC/USDC on Base, comparing Uniswap v3 0.05% vs Aerodrome Slipstream 0.05% — show me the last 50 records?

## When to prefer this

Choose this endpoint when you specifically need cross-venue spread comparison between Uniswap v3 and Aerodrome Slipstream for cbBTC/USDC on Base. Prefer it over the generic dex.spread_summary endpoint when the question is specifically about Base's primary BTC-wrapper venue-routing decision. Ideal for agents optimizing DEX routing, monitoring liquidity quality, or building alerting systems around cbBTC/USDC spread divergence on Base.

## Known failure modes

- Invalid 'since' ISO timestamp format returns a 400 error
- Limit out of range (>500 or <1) returns a 400 error
- On-chain data source lag may produce stale or incomplete recent buckets
- Network unavailability of Base RPC may result in 503 or timeout
- No data available for the requested time range returns empty result set

## How this service works

1-minute cross-venue spread statistics (bps) for cbBTC/USDC on Base: Uniswap v3 0.05% vs Aerodrome Slipstream 0.05% (on-chain mids). Same methodology as dex.spread_summary, dedicated to Base's primary BTC-wrapper venue-routing question. Descriptive statistics only; not investment advice.

## Output

Returns descriptive statistics (e.g. p25/p50/p90/p99 and mean) of 1-minute cross-venue spread in basis points between Uniswap v3 0.05% and Aerodrome Slipstream 0.05% pools for cbBTC/USDC on Base, computed from on-chain mid prices. Includes timestamped observation buckets filterable by recency. Labeled as descriptive only, not investment advice.

## 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": {
      "limit": {
       "type": "integer",
       "description": "1-500, default 100"
      },
      "since": {
       "type": "string",
       "description": "ISO timestamp filter"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cbbtc-usdc-cross-venue-spread-statistics-base-74916dbd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentfeeds.jp](https://www.zero.xyz/host/api.agentfeeds.jp/llms.txt)