Pay-per-message AI agent endpoint on Questflow's swarm platform (Base Sepolia testnet)
What it does
This is an x402-enabled endpoint hosted by Questflow that exposes a conversational AI agent via HTTP POST. You send a text message in the `input` field and receive a text `response` from the agent. Payment is handled through the x402 protocol using USDC on the Base Sepolia testnet, with a max cost of 0.5 USDC per request (6-decimal token, so 500000 units).
Questflow describes itself as a platform for creating autonomous AI "Clones" that aggregate onchain markets (Polymarket, Pump.fun, OKX, Opinion Labs) to discover alpha, execute trades, and generate revenue. However, the specific capabilities of this particular agent (titled "Personal use") are not documented beyond the generic input/output schema. There is no OpenAPI spec, no dedicated documentation page, and no detailed description of what domain knowledge or tools this agent has access to.
The endpoint is live and returns a valid x402 challenge on POST. It runs on a development API (`api-dev`), which suggests it may be a staging or test deployment rather than a production service. The payment asset is USDC on Base Sepolia (a testnet), meaning real funds are not at risk but the endpoint may not be intended for production use.
Capabilities
Use cases
- —Sending a text query to a Questflow AI agent and receiving a text response
- —Testing x402 payment flows on Base Sepolia testnet
- —Integrating a pay-per-message AI agent into an automated pipeline
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Testing pay-per-call AI agent interactions on a testnet
- —Exploring Questflow's swarm agent infrastructure
Not for
- —Production workloads requiring guaranteed uptime (this is a dev/testnet endpoint)
- —Users needing detailed documentation or predictable agent behavior
- —Anyone expecting free access — payment header is required
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5b17471a462d0c76bb802 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{"input": "What markets are trending today?"}'Example
Request
{
"input": "What markets are trending today?"
}Response
{
"response": "Based on current activity, the top trending markets include..."
}Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with a clear input/output schema. However, there is no OpenAPI spec, no dedicated documentation, no examples of actual responses, and the agent's specific capabilities are entirely undocumented. The 'Personal use' title and description are uninformative. This is a testnet (Base Sepolia) dev endpoint.
Warnings
- —Endpoint is on a development subdomain (api-dev) and uses Base Sepolia testnet — likely not production-ready
- —No documentation exists for this specific agent's capabilities or domain knowledge
- —The title 'Personal use' and description provide no meaningful information about what the agent does
- —Response format is inferred from the outputSchema; no actual response sample was captured
- —USDC asset address 0x036CbD53842c5426634e7929541eC2318f3dCF7e is the Base Sepolia testnet USDC
Citations
- —The endpoint returns a valid x402 challenge with x402Version 1 on POSThttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5b17471a462d0c76bb802
- —Payment is in USDC on Base Sepolia with maxAmountRequired of 500000https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5b17471a462d0c76bb802
- —Questflow describes itself as a platform for AI Clones that aggregate onchain marketshttps://api-dev.intra-tls2.dctx.link
- —The input schema expects a POST with a string 'input' field and returns a string 'response' fieldhttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5b17471a462d0c76bb802