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 an AI-generated response. Payment is handled via the x402 protocol on Base Sepolia using USDC (test token at 0x036CbD53842c5426634e7929541eC2318f3dCF7e), with a maximum charge of 0.5 USDC per request (500000 in token units). The endpoint accepts HTTP POST requests with a JSON body containing an `input` string field and returns a JSON object with a `response` string field.
Questflow is a platform focused on autonomous AI agents ("Clones") that aggregate onchain markets such as Polymarket, Pump.fun, OKX, and Opinion Labs. The broader platform lets users create AI clones that scan markets, execute trades, and generate revenue. This specific endpoint appears to be a general-purpose conversational agent within Questflow's swarm infrastructure, labeled "Personal use."
Documentation is extremely sparse. There is no OpenAPI spec, no dedicated docs page, and no detailed description of what this particular agent does beyond accepting a message and returning a response. The endpoint is on a development subdomain (api-dev), suggesting it may be a staging or test deployment. The x402 challenge metadata and the output schema from the probe are the only technical references available.
Capabilities
Use cases
- —Sending a text prompt to an AI agent and receiving a response via x402 micropayment
- —Testing x402 payment flows on Base Sepolia with a conversational AI endpoint
- —Integrating a pay-per-use AI agent into an autonomous agent pipeline
Fit
Best for
- —Developers experimenting with x402 payment protocol on testnet
- —Agent-to-agent communication workflows requiring paid AI responses
- —Prototyping micropayment-gated conversational AI services
Not for
- —Production workloads requiring mainnet settlement and SLAs
- —Users needing detailed documentation or guaranteed uptime
- —Complex multi-turn conversation or tool-use scenarios (no evidence of support)
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9e06d8c694476d90dc818 \
-H 'Content-Type: application/json' \
-H 'X-PAYMENT: <x402_payment_header>' \
-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
No OpenAPI spec, no docs, no examples, and the endpoint is on a dev subdomain. The only technical detail comes from the x402 challenge metadata and a minimal output schema. The agent's actual capabilities are unknown beyond accepting a string and returning a string. Response example is entirely inferred.
Warnings
- —Endpoint is on a development subdomain (api-dev), suggesting staging/test environment
- —Uses Base Sepolia testnet USDC — not real money, not production-ready
- —No documentation, no OpenAPI spec, no usage examples available
- —Agent purpose labeled only as 'Personal use' with no further description
- —Response example is fabricated for illustration; actual behavior is unknown
Citations
- —x402 challenge requires payment on base-sepolia with maxAmountRequired of 500000 in USDC asset 0x036CbD53842c5426634e7929541eC2318f3dCF7ehttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9e06d8c694476d90dc818
- —The endpoint accepts POST with a body field 'input' (string) and returns 'response' (string) per the outputSchema in the x402 challengehttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9e06d8c694476d90dc818
- —Questflow platform aggregates Polymarket, Pump.fun, OKX, Opinion Labs and other onchain markets for autonomous AI agentshttps://api-dev.intra-tls2.dctx.link
- —Description in x402 challenge is 'Personal use | Powered by Questflow'https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f9e06d8c694476d90dc818