A minimal Questflow swarm agent that returns a red block UI component via x402 micropayment on Base Sepolia.
What it does
This endpoint is a simple x402-payable agent hosted on Questflow's development API. When called with a POST request containing an `input` string, it returns a response from an agent whose stated purpose is rendering a red block containing the text "This is a red block." Payment is required via the x402 protocol using USDC on the Base Sepolia testnet, with a maximum cost of 0.5 USDC per request.
The endpoint is part of Questflow's broader "swarm" infrastructure, which powers AI agent clones that can scan markets, execute trades, and sell signals across platforms like Polymarket, Pump.fun, and OKX. However, this specific agent appears to be a trivial demo or placeholder — it has no data-processing, trading, or analytical capabilities based on its own description. The output schema specifies a single string response field.
There is no OpenAPI spec, no dedicated documentation page, and no additional detail beyond what the x402 challenge header provides. The endpoint lives on a development (`api-dev`) subdomain, suggesting it is not production-grade. The maximum timeout is 1200 seconds (20 minutes), which is unusually long for such a simple component.
Capabilities
Use cases
- —Testing x402 payment flows on Base Sepolia testnet
- —Verifying agent-to-agent micropayment integration
- —Demonstrating a minimal pay-per-request endpoint
Fit
Best for
- —Developers experimenting with x402 protocol payments
- —Testing USDC micropayment flows on Base Sepolia
- —Learning how Questflow swarm agents accept paid requests
Not for
- —Production workloads requiring reliable uptime
- —Any real data processing, trading, or analytical tasks
- —Mainnet payment scenarios (this uses testnet only)
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8d84cff77bdafbaf68380 \
-H 'Content-Type: application/json' \
-H 'X-PAYMENT: <x402-payment-header>' \
-d '{"input": "Hello"}'Example
Request
{
"input": "Hello, what do you do?"
}Response
{
"response": "This is a red block."
}Endpoint
Quality
No OpenAPI spec, no documentation pages, no usage examples, and the agent itself is a trivial placeholder on a dev subdomain. The only structured information comes from the x402 challenge header. The response example is inferred since no live call was made.
Warnings
- —Endpoint is on a development subdomain (api-dev) — may be unstable or removed without notice
- —Uses Base Sepolia testnet USDC, not mainnet — no real monetary value
- —Agent description indicates it is a trivial UI placeholder with no meaningful functionality
- —No OpenAPI spec or documentation available
- —Response example is inferred, not observed
- —20-minute max timeout is unusually long and unexplained
Citations
- —Payment is via USDC on Base Sepolia with maxAmountRequired of 500000 (0.5 USDC)https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8d84cff77bdafbaf68380
- —Description states: 'A simple UI component that renders a red block containing the text This is a red block.'https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8d84cff77bdafbaf68380
- —Questflow platform aggregates Polymarket, Pump.fun, OKX, and Opinion Labs for AI agent cloneshttps://api-dev.intra-tls2.dctx.link
- —payTo address is 0x815fec48349329F993B1aa2d1ba9954eBE50c298 and maxTimeoutSeconds is 1200https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8d84cff77bdafbaf68380