Historical gas price data for Base and other blockchains, paid per-call via x402 in USDC/USDT.
What it does
This endpoint from Erudite Intelligence LLC provides historical gas price data for blockchain networks. It accepts a POST request with a JSON body specifying the chain (e.g., "base", "ethereum", "tron") and returns historical gas data. The endpoint is gated behind the x402 payment protocol (version 2), requiring $0.01 per call payable in USDC on Base (eip155:8453) or USDT on Tron (tron:728126428).
The x402 challenge is live and confirms the endpoint is operational. The provider, Erudite Intelligence LLC, also operates the EruditePay x402 Bridge facilitator service supporting 20 blockchains. The facilitator for this endpoint is Coinbase CDP's x402 platform. However, the actual response schema for gas history data is sparse — the example output only shows `{"success": true, "data": {}}` with no detail on what fields the `data` object contains (e.g., gas prices over time, block ranges, units). No dedicated documentation page exists for this specific endpoint (the /docs path returns a 404).
Pricing: each call costs 10,000 base units of USDC (6 decimals) = $0.01, or equivalently 10,000 base units of USDT on Tron = $0.01. The endpoint supports POST method with a JSON body containing a "chain" field.
Capabilities
Use cases
- —Retrieve historical gas prices on Base to optimize transaction timing
- —Analyze gas fee trends across supported blockchains for cost forecasting
- —Feed gas history data into trading bots or DeFi automation pipelines
- —Build dashboards showing gas price trends over time
Fit
Best for
- —Developers building gas-aware dApps on Base or other chains
- —Agents that need programmatic access to historical gas data with crypto micropayments
- —Analytics platforms tracking blockchain transaction costs
Not for
- —Real-time gas price estimation for immediate transaction submission (this is historical data)
- —Users who need free or API-key-based access without crypto payment capability
- —Detailed block-by-block gas analytics (response schema is undocumented)
Quick start
curl -X POST https://bridge.eruditepay.com/v1/base/gas/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_header>" \
-d '{"chain": "base"}'Example
Request
{
"chain": "base"
}Response
{
"data": {},
"success": true
}Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.01/call). However, the response schema is essentially empty — the example output shows only `{"success": true, "data": {}}` with no documentation on what gas history fields are returned. No OpenAPI spec or dedicated docs page exists. The endpoint's actual utility is hard to evaluate without knowing the response structure.
Warnings
- —Response data schema is undocumented — the example output contains an empty data object
- —No dedicated API documentation exists (/docs returns 404)
- —No OpenAPI specification available
- —Unclear what time ranges, granularity, or gas metrics are included in the response
Citations
- —The endpoint costs 10,000 base units of USDC on Base or USDT on Tron per call ($0.01)https://bridge.eruditepay.com/v1/base/gas/history
- —Provider is Erudite Intelligence LLC, facilitator is Coinbase CDP x402 platformhttps://bridge.eruditepay.com/v1/base/gas/history
- —EruditePay Bridge supports 20 blockchains and is a FinCEN MSB registered entityhttps://bridge.eruditepay.com
- —The input schema accepts a 'chain' field describing the blockchain networkhttps://bridge.eruditepay.com/v1/base/gas/history