AI-powered Web3 trading agent accessible via x402 micropayment on Base Sepolia
What it does
Web3 Trader is an x402-enabled AI agent endpoint hosted on Questflow's infrastructure. It accepts a text message via POST and returns a response from an autonomous Web3 trading agent. The endpoint is gated by an x402 payment challenge requiring USDC on the Base Sepolia testnet, with a maximum cost of 0.5 USDC per request (500000 in token units) and a timeout of up to 1200 seconds.
Questflow positions itself as a platform for creating AI "Clones" that aggregate onchain markets — including Polymarket, Pump.fun, OKX, and Opinion Labs — to discover trading opportunities, execute trades, and generate signals. The Web3 Trader agent appears to be one such clone exposed as a pay-per-call API. You send a natural-language message (e.g., asking about market conditions or requesting a trade analysis), and the agent responds with text.
Documentation is minimal: there is no OpenAPI spec, no dedicated docs page, and no detailed API reference beyond the x402 challenge's outputSchema. The endpoint is live and returns a valid 402 challenge on POST. Because this runs on Base Sepolia (a testnet), it is likely intended for development and experimentation rather than production trading with real funds.
Capabilities
Use cases
- —Querying an AI agent for Web3 market analysis and trading signals
- —Integrating autonomous crypto trading insights into agent workflows via x402
- —Experimenting with pay-per-call AI trading agents on Base Sepolia testnet
- —Getting natural-language summaries of onchain market conditions
Fit
Best for
- —Developers experimenting with x402 payment-gated AI agents
- —Agent-to-agent workflows needing Web3 market intelligence
- —Prototyping pay-per-use crypto trading assistants on testnet
Not for
- —Production trading with real funds (uses Base Sepolia testnet)
- —Users needing detailed API documentation or OpenAPI specs
- —High-frequency or low-latency trading (1200s max timeout)
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee29de1d6130e109861e30 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{"input": "What are the top trending prediction markets right now?"}'Example
Request
{
"input": "What are the top trending prediction markets right now?"
}Response
{
"response": "Currently trending on Polymarket: 'Will the Fed cut rates in July?' at 62% yes. On Pump.fun, $CLONE token is seeing high volume. Consider monitoring ETH/BTC ratio for macro signals."
}Endpoint
Quality
The endpoint is live with a valid x402 402 challenge and includes an outputSchema describing input/output fields. However, there is no OpenAPI spec, no dedicated documentation, no usage examples, and the response format is inferred from the schema alone. The testnet-only payment network limits practical utility.
Warnings
- —No OpenAPI spec or dedicated API documentation available
- —Payment is on Base Sepolia testnet — not suitable for production use
- —Response example is inferred from outputSchema, not from an actual API call
- —Max timeout of 1200 seconds suggests potentially long-running agent tasks
- —The endpoint description contained a marketing suffix ('Powered by Questflow') which was stripped
Citations
- —x402 challenge requires USDC on base-sepolia with maxAmountRequired of 500000 and maxTimeoutSeconds of 1200https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee29de1d6130e109861e30
- —Questflow aggregates Polymarket, Pump.fun, Opinion Labs, OKX and other onchain marketshttps://api-dev.intra-tls2.dctx.link
- —The endpoint accepts POST with a JSON body containing an 'input' string field and returns a 'response' string fieldhttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee29de1d6130e109861e30
- —Payment address is 0x64dd80232fE3500abbA31F217dd011CA1F63A7A0 and asset is USDC at 0x036CbD53842c5426634e7929541eC2318f3dCF7ehttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee29de1d6130e109861e30