Pay-per-message AI agent endpoint on Questflow's swarm network via x402 micropayments.
What it does
This x402-enabled endpoint exposes a Questflow "swarm" agent that accepts a text message and returns a text response, paid per-request with USDC on Base Sepolia. The endpoint follows the x402 payment protocol (version 1): callers must include an X-PAYMENT header to satisfy a micropayment of up to 0.50 USDC (500000 units of the USDC contract on Base Sepolia) per request.
Questflow is a platform for creating autonomous AI agents ("Clones") that aggregate onchain markets such as Polymarket, Pump.fun, OKX, and Opinion Labs. While the landing page focuses on trading and market-scanning clones, this specific endpoint is labeled "Personal use" and provides a generic agent chat interface: you POST a JSON body with an `input` string field and receive a JSON response containing a `response` string. The maximum timeout per request is 1200 seconds (20 minutes), suggesting the agent may perform non-trivial processing.
Documentation is minimal — there is no OpenAPI spec, no dedicated docs page, and no detailed pricing page. The output schema is embedded in the x402 challenge itself. The endpoint is on a development subdomain (`api-dev`), and payment is on the Base Sepolia testnet, indicating this is likely a staging or preview deployment rather than a production service.
Capabilities
Use cases
- —Sending a text prompt to a Questflow AI agent and receiving a response via micropayment
- —Integrating autonomous AI agent capabilities into workflows using x402 payment protocol
- —Testing pay-per-use agent interactions on Base Sepolia testnet
Fit
Best for
- —Developers experimenting with x402 payment-gated AI agent endpoints
- —Users exploring Questflow's autonomous agent platform
- —Prototyping micropayment-based conversational AI integrations on testnet
Not for
- —Production workloads requiring mainnet payments and SLAs
- —Users needing detailed API documentation or OpenAPI specs
- —High-throughput, low-latency chat applications (20-minute timeout suggests heavy processing)
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f883197aa0f71b3c5e8b62 \
-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: Polymarket's Fed rate decision contract is seeing high volume, and several new meme tokens launched on Pump.fun in the last hour."
}Endpoint
Quality
No OpenAPI spec, no docs endpoint, no pricing page, and the endpoint is on a dev/testnet subdomain. The only schema information comes from the x402 challenge's outputSchema. The response example is entirely inferred. Very sparse documentation.
Warnings
- —Endpoint is on a development subdomain (api-dev) and uses Base Sepolia testnet — not production-ready
- —No OpenAPI specification or documentation endpoint found (all /docs, /api, /pricing, /README return 404)
- —Response example is inferred; no actual response sample is available
- —maxTimeoutSeconds is 1200 (20 minutes), which may indicate long-running or unreliable processing
- —The listing title 'Personal use' is vague and may not reflect actual agent capabilities
Citations
- —x402 challenge requires up to 500000 units of USDC on Base Sepolia with payTo address 0x66Ce83F9627B2f1167187BD0E91D7C5FC71b2B1Ehttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f883197aa0f71b3c5e8b62
- —Questflow aggregates Polymarket, Pump.fun, Opinion Labs, OKX and other onchain marketshttps://api-dev.intra-tls2.dctx.link
- —The endpoint accepts a POST with an 'input' string field and returns a 'response' string, per the outputSchema in the x402 challengehttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f883197aa0f71b3c5e8b62
- —maxTimeoutSeconds is 1200 for this endpointhttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f883197aa0f71b3c5e8b62