Gas fee suggestions for Base chain via x402-paid crypto data intelligence endpoint
What it does
This endpoint at bridge.eruditepay.com provides mempool-based gas fee suggestions for the Base blockchain (and potentially other chains). It is operated by Erudite Intelligence LLC and sits behind an x402 paywall, accepting payment in USDC on Base (eip155:8453) or USDT on Tron (tron:728126428). The price per call is 10,000 base units, which equals $0.01 USD (1 cent) given USDC/USDT's 6-decimal precision.
The endpoint accepts a POST request with a JSON body containing a `chain` field (e.g., "base", "ethereum", "tron") and returns a JSON response with gas-related data. The exact structure of the returned gas suggestion data is not fully documented — the example output only shows `{"success": true, "data": {}}` — so the precise fields within `data` are unknown. The endpoint is live and returning a proper x402 v2 challenge.
The hosting provider, EruditePay, operates an x402 payment facilitator bridge supporting 20 blockchains. They are FinCEN MSB registered (BSA ID 31000324258137) and operate non-custodially. The facilitator for this endpoint is Coinbase CDP (api.cdp.coinbase.com). Documentation at docs.eruditepay.com is referenced but the /docs path on the bridge itself returns a 404, and no OpenAPI spec was found.
Capabilities
Use cases
- —Fetching real-time gas fee recommendations before submitting Base chain transactions
- —Integrating gas price data into wallet or dApp UIs for fee estimation
- —Automated trading bots that need current gas conditions to optimize transaction timing
- —Multi-chain applications querying gas suggestions across different networks
Fit
Best for
- —Developers building on Base who need gas fee intelligence
- —Agent-driven workflows that need programmatic gas estimation behind micropayments
- —Applications requiring pay-per-call gas data without monthly subscriptions
Not for
- —Users needing free gas estimation (public RPC eth_gasPrice is free)
- —Historical gas price analytics or batch data retrieval
- —Non-blockchain applications with no need for gas fee data
Quick start
curl -X POST https://bridge.eruditepay.com/v1/base/mempool/gas-suggestion \
-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 endpoint is live with a valid x402 v2 challenge and schema metadata, but the actual response payload is undocumented (example output shows an empty data object). No OpenAPI spec exists, and the docs link returns 404. Pricing and payment details are clear, but the utility of the response cannot be fully evaluated.
Warnings
- —Output data structure is undocumented — the example shows an empty 'data' object with no field definitions
- —No OpenAPI or detailed API documentation found; docs.eruditepay.com is referenced but /docs on the bridge returns 404
- —The exact gas suggestion fields returned are unknown and must be discovered by calling the endpoint
Citations
- —Endpoint returns x402 v2 challenge with USDC on Base and USDT on Tron payment options at 10,000 base units ($0.01)https://bridge.eruditepay.com/v1/base/mempool/gas-suggestion
- —Operated by Erudite Intelligence LLC, FinCEN MSB registered with BSA ID 31000324258137https://bridge.eruditepay.com
- —EruditePay Bridge supports 20 blockchains and uses Coinbase CDP as facilitatorhttps://bridge.eruditepay.com
- —Settlement pricing is 0.5% per successful settlement, verification is freehttps://bridge.eruditepay.com