Real-time Ethereum price monitoring agent returning current price, 24h change, market cap, volume, and 7-day chart data.
What it does
This x402-payable endpoint provides a real-time Ethereum (ETH) price monitoring agent hosted on Questflow's infrastructure. It accepts a text prompt via a POST request and returns an agent-generated response containing current ETH price, 24-hour price change, market capitalization, trading volume, and 7-day price chart data.
The endpoint uses the x402 payment protocol on the Base Sepolia testnet, accepting USDC payments (asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e) with a maximum cost of 500,000 units (0.50 USDC assuming 6 decimals). The payment scheme is "exact" and the maximum timeout is 1,200 seconds. The request body takes a single required string field called "input" containing your message to the agent, and the response returns a string field called "response" with the agent's answer.
Note that this endpoint is on a development API server (api-dev) and uses a testnet (Base Sepolia), suggesting it is not yet in production. No OpenAPI spec, dedicated documentation, or pricing page was found. The underlying platform is Questflow, which builds AI agent clones for onchain market monitoring and trading.
Capabilities
Use cases
- —Querying current Ethereum price and 24-hour change programmatically
- —Retrieving ETH market cap and trading volume for portfolio dashboards
- —Getting 7-day ETH price chart data for trend analysis
- —Agent-to-agent real-time crypto price lookups
Fit
Best for
- —Developers building crypto dashboards who need on-demand ETH data via a pay-per-call model
- —AI agents that need real-time Ethereum market data without API key management
- —Prototyping x402 payment flows on Base Sepolia testnet
Not for
- —Production-grade applications requiring mainnet payment settlement
- —High-frequency trading requiring sub-second latency guarantees
- —Multi-asset or multi-chain price feeds beyond Ethereum
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68eca3887938a7458fbd1de5 \
-H 'Content-Type: application/json' \
-H 'X-PAYMENT: <x402-payment-header>' \
-d '{"input": "What is the current ETH price?"}'Example
Request
{
"input": "What is the current ETH price and 24-hour change?"
}Response
{
"response": "The current Ethereum (ETH) price is $3,450.12, with a 24-hour change of +2.3%. Market cap: $415B. 24h trading volume: $12.8B."
}Endpoint
Quality
No OpenAPI spec, no documentation pages, no example responses, and the endpoint is on a dev/testnet environment. The only structured information comes from the x402 challenge payload and the existing description. The example response is inferred, not sourced.
Warnings
- —Endpoint is on a development server (api-dev) using Base Sepolia testnet — not production-ready
- —No OpenAPI specification or documentation found; /docs, /api, /pricing, /README all return 404
- —Example response is entirely inferred — no actual response sample was available
- —Payment asset is testnet USDC; real monetary value of transactions is unclear
- —maxAmountRequired of 500000 units — actual cost depends on token decimals (likely 0.50 USDC on testnet)
Citations
- —The endpoint uses x402 version 1 with exact scheme on base-sepolia, maxAmountRequired 500000, USDC asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e, and maxTimeoutSeconds 1200https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68eca3887938a7458fbd1de5
- —The description states it is a real-time Ethereum price monitoring board displaying current price, 24-hour change, market cap, trading volume, and a 7-day price chart, powered by Questflowhttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68eca3887938a7458fbd1de5
- —Questflow is a platform for AI agent clones that aggregate onchain markets including Polymarket, Pump.fun, OKX, and Opinion Labshttps://api-dev.intra-tls2.dctx.link