Pay-per-message AI agent endpoint on Questflow's swarm network via x402 micropayments.
What it does
This is an x402-enabled endpoint hosted on Questflow's development API (api-dev.intra-tls2.dctx.link) that exposes a conversational AI agent behind a micropayment wall. The endpoint accepts a POST request with a JSON body containing an `input` string (your message to the agent) and returns a `response` string from the agent. Payment is handled via the x402 protocol using USDC on the Base Sepolia testnet, with a maximum amount of 500,000 units (likely 0.50 USDC given 6-decimal USDC) per request.
Questflow is a platform focused on autonomous AI "Clones" that aggregate onchain markets (Polymarket, Pump.fun, OKX, Opinion Labs) for trading, signal generation, and revenue earning. This particular endpoint is labeled "Personal use" and appears to be a single agent within Questflow's swarm infrastructure, identified by the QRN `qrn:swarm:68f87a480be638ba41f6325f`. The endpoint is live and returns a proper 402 challenge with a well-defined output schema.
Note that this endpoint is on a development/testnet environment (Base Sepolia, dev subdomain), so it should not be treated as production-grade. Documentation beyond the x402 challenge itself is essentially absent — there is no OpenAPI spec, no dedicated docs page, and the agent's specific capabilities or domain expertise are not described beyond the generic "Personal use" label.
Capabilities
Use cases
- —Sending paid messages to a Questflow AI agent and receiving text responses
- —Testing x402 micropayment flows on Base Sepolia testnet
- —Integrating autonomous agent interactions into crypto-native workflows
Fit
Best for
- —Developers experimenting with x402 payment protocol integrations
- —Testing pay-per-query AI agent patterns on 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 well-defined agent capabilities
- —Anyone expecting free or non-crypto payment options
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f87a480be638ba41f6325f \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{"input": "Hello, what can you do?"}'Example
Request
{
"input": "Hello, what can you do?"
}Response
{
"response": "I can help you with various tasks. How can I assist you today?"
}Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with a clear input/output schema. However, there is no OpenAPI spec, no dedicated documentation, the agent's specific capabilities are undescribed ('Personal use' is vague), and this is a dev/testnet deployment. The response example is inferred from the output schema, not observed.
Warnings
- —Development/testnet endpoint (Base Sepolia) — not suitable for production use
- —No documentation available beyond the x402 challenge payload
- —Agent capabilities and domain expertise are completely undescribed
- —The 'Personal use' label provides no meaningful information about what the agent does
- —Response example is inferred from outputSchema, not from an actual observed response
Citations
- —Endpoint returns a 402 challenge with x402Version 1, accepting USDC on base-sepolia with maxAmountRequired 500000https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f87a480be638ba41f6325f
- —The input schema requires a POST with a JSON body field 'input' (string) and returns a 'response' (string)https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f87a480be638ba41f6325f
- —Questflow is a platform for AI Clones that aggregate onchain markets including Polymarket, Pump.fun, OKX, and Opinion Labshttps://api-dev.intra-tls2.dctx.link
- —Payment is directed to address 0xA1276A1135F73e9F910e29915f556C6a4496bB9c using USDC asset 0x036CbD53842c5426634e7929541eC2318f3dCF7ehttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f87a480be638ba41f6325f