Questflow Swarm agent endpoint: send a message, get an AI agent response via x402 micropayment.
What it does
This is an x402-enabled endpoint hosted by Questflow on their development API server (api-dev.intra-tls2.dctx.link). It exposes a single POST interface that accepts a text message and returns a text response from an AI agent identified by the QRN `qrn:swarm:68f206389c162996ee72e102`. Payment is required via the x402 protocol using USDC on the Base Sepolia testnet, with a maximum cost of 0.5 USDC (500000 in token units) per request and a timeout of up to 1200 seconds.
Questflow is a platform focused on autonomous AI "Clones" that aggregate onchain markets (Polymarket, Pump.fun, OKX, Opinion Labs) to discover alpha, execute trades, and generate revenue. This particular endpoint appears to be a generic agent chat interface — the x402 challenge description provides no specific context about the agent's specialization, stating only that "the project is categorized under a generic placeholder." The endpoint is live and returns a proper 402 challenge when called without payment.
Notable caveats: this is a development/testnet endpoint (Base Sepolia, not mainnet), there is no OpenAPI spec or dedicated documentation available, and the agent's actual capabilities are unspecified. The output schema indicates a simple request/response string pattern. Users should treat this as experimental.
Capabilities
Use cases
- —Sending natural-language queries to a Questflow swarm agent and receiving AI-generated responses
- —Testing x402 micropayment flows on Base Sepolia testnet
- —Integrating autonomous AI agent capabilities into agent-to-agent workflows
Fit
Best for
- —Developers experimenting with x402 payment protocol on testnet
- —Agent-to-agent communication via paid chat endpoints
- —Exploring Questflow's swarm agent infrastructure
Not for
- —Production/mainnet use (this is a Base Sepolia testnet endpoint)
- —Users needing well-documented, schema-rich APIs with guaranteed SLAs
- —Anyone expecting a specific, well-defined agent capability (the agent's purpose is unspecified)
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f206389c162996ee72e102 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <your-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
The endpoint is live and returns a valid x402 challenge with an output schema, but the agent's purpose is entirely unspecified (described as a 'generic placeholder'), there is no OpenAPI spec, no documentation, and this is a development/testnet endpoint. The response example is inferred from the output schema, not observed.
Warnings
- —Agent purpose is unspecified — the description is literally 'generic placeholder'
- —This is a development endpoint on Base Sepolia testnet, not production/mainnet
- —No OpenAPI spec or API documentation available
- —Response example is inferred from outputSchema, not from an actual observed response
- —Maximum timeout of 1200 seconds suggests potentially long-running agent tasks
Citations
- —The endpoint returns a 402 challenge requiring USDC payment on Base Sepolia with maxAmountRequired of 500000https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f206389c162996ee72e102
- —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
- —The x402 challenge description states the project is categorized under a generic placeholder, powered by Questflowhttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f206389c162996ee72e102