Chat-based Web3 trading agent powered by Questflow, payable via x402 on Base Sepolia
What it does
Web3 Trader is an x402-enabled AI agent endpoint hosted by Questflow. It accepts a text message via POST and returns a response from an autonomous Web3 trading agent. The endpoint is part of Questflow's "AI Clone" platform, which aggregates onchain markets including Polymarket, Pump.fun, Opinion Labs, and OKX to discover trading opportunities, execute trades, and generate signals.
The endpoint uses the x402 payment protocol on the Base Sepolia testnet, accepting USDC payments (asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e) with a max amount of 500,000 units (0.50 USDC assuming 6 decimals). The interface is simple: send a JSON body with an "input" string field containing your message, and receive a JSON response with a "response" string field. The max timeout is 1200 seconds, suggesting the agent may perform non-trivial processing or chain interactions before responding.
Documentation is minimal — there is no OpenAPI spec, no dedicated docs page, and no detailed API reference beyond the outputSchema embedded in the x402 challenge. The endpoint is live and returns a proper 402 challenge. Because this runs on Base Sepolia (a testnet), it is likely intended for development or demonstration purposes rather than production trading with real funds.
Capabilities
Use cases
- —Querying an AI agent for Web3 trading insights and market analysis
- —Programmatically interacting with an autonomous trading agent via x402 micropayments
- —Integrating a crypto-focused conversational agent into a multi-agent workflow
- —Testing x402 payment flows with a live agent on Base Sepolia testnet
Fit
Best for
- —Developers experimenting with x402 payment protocol and AI agents
- —Users wanting chat-based interaction with a Web3-aware trading agent
- —Agent-to-agent workflows that need crypto market intelligence
Not for
- —Production trading with real funds (this is on Base Sepolia testnet)
- —Users needing detailed API documentation or OpenAPI specs
- —Non-crypto use cases with no Web3 context
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ef4434edb2088cc0dd6a8a \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-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 scanning, here are top opportunities: 1) Polymarket - Fed rate decision (June) at 62% implied probability, showing divergence from futures pricing..."
}Endpoint
Quality
The endpoint is live with a valid 402 challenge and includes an outputSchema describing input/output fields. However, there is no OpenAPI spec, no dedicated documentation, no usage examples, and the endpoint runs on a testnet. The agent's actual capabilities and behavior are largely inferred from the Questflow landing page rather than documented API behavior.
Warnings
- —Runs on Base Sepolia testnet — not suitable for real-money trading
- —No OpenAPI spec or dedicated API documentation available
- —Agent response behavior and capabilities are not formally documented
- —Example response is fabricated for illustration — actual output format may differ
- —Max amount of 500000 units — exact USDC denomination (likely 0.50 USDC with 6 decimals) is inferred
Citations
- —The endpoint returns a 402 challenge with x402Version 1 on Base Sepolia accepting USDChttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ef4434edb2088cc0dd6a8a
- —Questflow aggregates Polymarket, Pump.fun, Opinion Labs, and OKX marketshttps://api-dev.intra-tls2.dctx.link
- —The outputSchema specifies a POST method with an 'input' string body field and a 'response' string outputhttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ef4434edb2088cc0dd6a8a
- —Payment is sent to address 0xCFcFADEbb195641bad24c126b2712E21Aad205A8 with maxTimeoutSeconds of 1200https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ef4434edb2088cc0dd6a8a