x402-payable Questflow swarm agent endpoint on Base Sepolia testnet
What it does
This is an x402-protocol endpoint hosted by Questflow that exposes a swarm agent behind a pay-per-request paywall using USDC on the Base Sepolia testnet. The endpoint accepts a POST request with a text input message and returns a text response from the agent. Payment is handled via the x402 protocol's X-PAYMENT header, with a maximum cost of 500,000 units of USDC (on Base Sepolia) per request and a timeout of up to 1,200 seconds.
Questflow is a platform for creating autonomous AI "clones" that aggregate onchain markets (Polymarket, Pump.fun, OKX, Opinion Labs, etc.) to discover trading alpha and execute trades. This particular endpoint appears to be a development/test instance (api-dev subdomain, Sepolia testnet) of a Questflow swarm agent. The description provided by the endpoint operator is simply "ddddddd," which suggests this is a placeholder or test deployment rather than a production-ready service.
No OpenAPI schema, dedicated documentation, or detailed capability descriptions are available. The only structured metadata comes from the x402 challenge response, which defines a simple input/output schema: send a string message, receive a string response. Without further documentation, the exact capabilities and behavior of the underlying swarm agent are unknown.
Capabilities
Use cases
- —Sending paid queries to a Questflow swarm agent via x402 protocol
- —Testing x402 payment flows on Base Sepolia testnet
- —Integrating autonomous agent responses into agent-to-agent workflows
Fit
Best for
- —Developers experimenting with x402 payment protocol on testnet
- —Agent-to-agent communication with pay-per-request billing
- —Exploring Questflow's swarm agent capabilities
Not for
- —Production workloads (this is a dev/testnet endpoint)
- —Users needing well-documented, stable APIs
- —Anyone expecting free or non-crypto payment options
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4 \
-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": "Currently trending markets include..."
}Endpoint
Quality
The endpoint has minimal documentation — the description is a placeholder ('ddddddd'), there is no OpenAPI spec, no docs page, and it runs on a testnet dev subdomain. The only structured info comes from the x402 challenge. This is effectively a stub listing.
Warnings
- —Endpoint description is a placeholder ('ddddddd'), suggesting a test or incomplete deployment
- —Running on Base Sepolia testnet — not production mainnet
- —No OpenAPI spec or documentation available
- —Dev subdomain (api-dev) indicates this is not a stable production endpoint
- —Response behavior and agent capabilities are entirely unknown
Citations
- —x402 challenge requires USDC payment on base-sepolia with maxAmountRequired of 500000 and maxTimeoutSeconds of 1200https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4
- —Questflow is a platform for creating AI clones that aggregate onchain markets like Polymarket, Pump.fun, OKX, and Opinion Labshttps://api-dev.intra-tls2.dctx.link
- —The endpoint description from the x402 challenge is 'ddddddd | Powered by Questflow'https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4
- —Payment is sent to address 0x0dedf73d9E5f96f01ab0dFcEEd3A1E435f2cd0f0 using USDC asset 0x036CbD53842c5426634e7929541eC2318f3dCF7ehttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f0ad2d9c48f862fcc5e4e4