Cross-chain arbitrage spread data for any token, paid per-call via x402 on Base or Tron.
What it does
The `/v1/cross/arb/chain-spread` endpoint on EruditePay's Bridge returns cross-chain arbitrage spread intelligence for a given token. You POST a JSON body containing a token address (or pair identifier), and the endpoint returns spread data across chains. The service is described as "Crypto data intelligence" in the x402 challenge and is operated by Erudite Intelligence LLC, a FinCEN-registered MSB.
Pricing is $0.01 per call (10,000 base units of USDC on Base or USDT on Tron, both 6-decimal tokens). Payment is handled via the x402 v2 protocol: the endpoint returns a 402 challenge, the caller signs a payment, and the facilitator verifies and settles on-chain. Two payment options are accepted — USDC on Base (eip155:8453) settled through Coinbase CDP, or Tether USDT on Tron (tron:728126428).
Documentation is sparse. The response schema shows `{"success": true, "data": {}}` as an example but does not detail the structure of the `data` object. The input schema accepts a `token` field described as "Token address or pair identifier." No further field documentation, rate limits, or detailed output schema were found in the crawl. The endpoint is live and returning a well-formed x402 v2 challenge.
Capabilities
Use cases
- —Detecting cross-chain arbitrage opportunities for a specific token
- —Monitoring price spreads across multiple blockchains for trading bots
- —Feeding spread data into automated arbitrage execution pipelines
- —Enriching portfolio dashboards with cross-chain pricing intelligence
Fit
Best for
- —Crypto trading bots that need real-time cross-chain spread data
- —DeFi developers building arbitrage tooling
- —Agents that autonomously discover and act on price discrepancies across chains
Not for
- —Historical backtesting — no evidence of historical data support
- —Non-crypto or traditional finance spread analysis
- —Users who need detailed documentation before integrating — docs are currently sparse
Quick start
curl -X POST https://bridge.eruditepay.com/v1/cross/arb/chain-spread \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}'Example
Request
{
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}Response
{
"data": {},
"success": true
}Endpoint
Quality
The endpoint is live and returns a well-formed x402 v2 challenge with clear pricing ($0.01/call). However, the output schema is essentially empty (example shows `data: {}`), there is no dedicated documentation, and the exact structure of the spread data returned is unknown. Input schema is minimal with only a single `token` field.
Warnings
- —Output data structure is undocumented — the example response shows an empty `data` object
- —No dedicated API documentation found (docs.eruditepay.com referenced but /docs returns 404 on the bridge)
- —The exact contents and fields of the arbitrage spread response cannot be verified without a paid call
- —Input schema only documents a single `token` field; additional parameters may exist but are not described
Citations
- —Endpoint returns x402 v2 challenge with price of 10000 base units USDC on Base or USDT on Tronhttps://bridge.eruditepay.com/v1/cross/arb/chain-spread
- —Operated by Erudite Intelligence LLC, FinCEN MSB registered (BSA ID 31000324258137)https://bridge.eruditepay.com
- —EruditePay Bridge supports 20 blockchains and charges 0.5% per settlementhttps://bridge.eruditepay.com
- —USDC on Base uses 6 decimals, so 10000 base units = $0.01https://bridge.eruditepay.com/v1/cross/arb/chain-spread
- —Facilitator for Base USDC payments is Coinbase CDPhttps://bridge.eruditepay.com/v1/cross/arb/chain-spread