Pay-per-call Web3 trading agent via x402 on Base Sepolia, powered by Questflow
What it does
Web3 Trader is an x402-payable AI agent endpoint hosted by Questflow that accepts a text prompt and returns a response from a Web3 trading-focused agent. The endpoint uses the x402 payment protocol on the Base Sepolia testnet, accepting USDC payments (up to 0.5 USDC per call) before processing the request. You send a POST with an `input` string (your message to the agent) and receive a `response` string back.
The agent is part of Questflow's broader "AI Clone" platform, which aggregates onchain markets such as Polymarket, Pump.fun, OKX, and Opinion Labs. The platform's marketing describes capabilities including market scanning, pattern detection, sentiment analysis, and whale-move tracking across multiple chains. However, the specific capabilities exposed through this single endpoint are unclear — the schema only defines a free-text input/output interface with no structured trading parameters.
This endpoint is currently on a testnet (Base Sepolia), meaning it is likely in a development or preview stage rather than production. There is no OpenAPI spec, no dedicated API documentation, and no detailed description of what kinds of queries the agent can handle or what the response format looks like beyond a plain string. Prospective users should treat this as an experimental endpoint.
Capabilities
Use cases
- —Querying an AI agent about Web3 market conditions or trading opportunities
- —Getting AI-generated analysis on prediction markets, meme coins, or token launches
- —Programmatic agent-to-agent interaction for crypto trading signals
Fit
Best for
- —Developers experimenting with x402 payment-gated AI agents
- —Exploring pay-per-call Web3 trading assistants on testnet
- —Agent-to-agent workflows that need a crypto-aware conversational endpoint
Not for
- —Production trading with real funds (testnet only)
- —Users needing structured trade execution APIs with defined parameters
- —Anyone requiring detailed API documentation or guaranteed SLAs
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee02fbd8b26d2e2dff7428 \
-H 'Content-Type: application/json' \
-H 'X-PAYMENT: <x402_payment_token>' \
-d '{"input": "What are the top prediction market opportunities right now?"}'Example
Request
{
"input": "What are the top prediction market opportunities right now?"
}Response
{
"response": "Based on current Polymarket data, the top opportunities include..."
}Endpoint
Quality
The endpoint has a valid x402 challenge with a minimal input/output schema, but there is no OpenAPI spec, no API documentation, no example responses, and the endpoint runs on a testnet. Nearly all functional details are inferred from the platform's marketing page rather than technical documentation.
Warnings
- —Endpoint is on Base Sepolia testnet — not production
- —No OpenAPI spec or dedicated API documentation available
- —Response format and agent capabilities are undocumented beyond a generic string output
- —The example response JSON is entirely fabricated for illustration; actual responses are unknown
- —Platform marketing claims (win rates, GMV, etc.) are unverifiable
Citations
- —The endpoint uses x402 version 1 on base-sepolia with USDC asset at 0x036CbD53842c5426634e7929541eC2318f3dCF7ehttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee02fbd8b26d2e2dff7428
- —Maximum amount required is 500000 (0.5 USDC) with a max timeout of 1200 secondshttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee02fbd8b26d2e2dff7428
- —Description from x402 challenge: 'Web3 Trader | Powered by Questflow'https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee02fbd8b26d2e2dff7428
- —Questflow aggregates Polymarket, Pump.fun, Opinion Labs, OKX and other onchain marketshttps://api-dev.intra-tls2.dctx.link