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 related to Web3 trading. The endpoint uses the x402 payment protocol on the Base Sepolia testnet, accepting USDC payments with a maximum amount of 500,000 units (likely 0.50 USDC given 6-decimal USDC). You send a POST request with an `input` string field and receive a `response` string from the agent.
The parent platform, Questflow, positions itself as an AI agent economy for onchain markets — aggregating prediction markets (Polymarket, Opinion Labs), meme coin platforms (Pump.fun), and exchanges (OKX) into autonomous trading clones. However, the specific capabilities of this particular "Web3 Trader" agent are not documented beyond the minimal x402 challenge schema. There is no OpenAPI spec, no dedicated docs page, and no usage examples available from the provider.
Because this endpoint runs on Base Sepolia (a testnet), it is likely intended for development and experimentation rather than production trading with real funds. The timeout of 1200 seconds suggests the agent may perform non-trivial processing or multi-step reasoning before returning a response.
Capabilities
Use cases
- —Querying an AI agent for Web3 trading insights or market analysis
- —Programmatic agent-to-agent interaction for crypto market signals
- —Testing x402 payment-gated AI agent workflows on Base Sepolia
Fit
Best for
- —Developers experimenting with x402 payment protocol for AI agents
- —Exploring pay-per-call crypto trading assistants on testnet
- —Agent-to-agent commerce prototyping in the Web3 space
Not for
- —Production trading with real funds (this is on Base Sepolia testnet)
- —Users needing detailed API documentation or guaranteed response schemas
- —Non-crypto or general-purpose LLM chat
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a \
-H 'Content-Type: application/json' \
-H 'X-PAYMENT: <x402_payment_token>' \
-d '{"input": "What are the top trending tokens on Pump.fun today?"}'Example
Request
{
"input": "What are the top trending tokens on Pump.fun today?"
}Response
{
"response": "Based on current on-chain data, the top trending tokens on Pump.fun include..."
}Endpoint
Quality
Only the x402 challenge metadata is available — no OpenAPI spec, no docs, no usage examples, and no real response samples. The endpoint is on a testnet. Almost everything beyond the payment schema is inferred.
Warnings
- —No OpenAPI spec or documentation available at /docs, /api, or /README
- —Runs on Base Sepolia testnet — not suitable for production use with real funds
- —Response format and agent capabilities are undocumented beyond a single 'response' string field
- —Example response is fabricated for illustration; actual output is unknown
- —The maxAmountRequired of 500000 units is ambiguous — likely 0.50 USDC but unconfirmed
Citations
- —x402 challenge returns version 1, network base-sepolia, asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e (USDC), maxAmountRequired 500000https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a
- —Description in x402 challenge is 'Web3 Trader | Powered by Questflow'https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a
- —Questflow aggregates Polymarket, Pump.fun, Opinion Labs, OKX and other onchain marketshttps://api-dev.intra-tls2.dctx.link
- —maxTimeoutSeconds is 1200 for this endpointhttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0cb269c162996ee71920a