Chat-based Web3 trading agent covering Polymarket, Pump.fun, OKX, and more via x402 micropayment.
What it does
Web3 Trader is an x402-payable AI agent endpoint hosted by Questflow. It accepts a text message via POST and returns a response from a Web3 trading agent. The agent is part of Questflow's "AI Clone" swarm platform, which aggregates onchain markets including Polymarket, Pump.fun, Opinion Labs, and OKX for alpha discovery and trade execution.
The endpoint uses the x402 payment protocol on Base Sepolia, accepting USDC (asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e) with a maximum cost of 500,000 units (likely 0.50 USDC given 6-decimal USDC). The request body takes a single required field — `input` (string) — representing your message to the agent, and returns a `response` (string) with the agent's reply. The maximum timeout is 1200 seconds (20 minutes), suggesting the agent may perform non-trivial on-chain lookups or computations before responding.
Note that this endpoint is on a development API (`api-dev`) and uses Base Sepolia (a testnet), so it is likely intended for testing and experimentation rather than production trading. No formal API documentation, OpenAPI spec, or detailed usage guides were found beyond the x402 challenge metadata and the Questflow landing page.
Capabilities
Use cases
- —Querying an AI agent about current Web3 market conditions and trading opportunities
- —Getting analysis on prediction markets like Polymarket via a pay-per-request model
- —Integrating autonomous Web3 trading intelligence into agent-to-agent workflows
- —Exploring Questflow's swarm agent capabilities on testnet before production deployment
Fit
Best for
- —Developers experimenting with x402 pay-per-call AI agent endpoints
- —Users wanting chat-based Web3 market intelligence without managing their own infrastructure
- —Agent-to-agent commerce scenarios requiring onchain market analysis
Not for
- —Production trading with real funds (this is on Base Sepolia testnet)
- —Users needing detailed API documentation or OpenAPI specs
- —High-frequency or low-latency trading (max timeout is 20 minutes)
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cc109c162996ee719438 \
-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 x402 challenge is live and provides a clear outputSchema with input/output fields. However, there is no OpenAPI spec, no dedicated API documentation, and the endpoint is on a testnet (Base Sepolia). The response format is inferred solely from the outputSchema in the 402 challenge. The Questflow landing page provides context but no endpoint-specific docs.
Warnings
- —Endpoint is on Base Sepolia (testnet) — not suitable for real-money trading
- —No OpenAPI spec or formal API documentation found
- —Development API (api-dev subdomain) — may be unstable or subject to breaking changes
- —Response example is inferred from outputSchema, not from an actual successful call
- —Max timeout of 1200 seconds suggests potentially very long response times
Citations
- —The endpoint accepts USDC on Base Sepolia with maxAmountRequired of 500000https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cc109c162996ee719438
- —The request takes an 'input' string field and returns a 'response' string fieldhttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cc109c162996ee719438
- —Questflow aggregates Polymarket, Pump.fun, OKX, and Opinion Labs marketshttps://api-dev.intra-tls2.dctx.link
- —Maximum timeout is 1200 secondshttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cc109c162996ee719438