Questflow AI agent endpoint for personal use — pay-per-message via x402 on Base Sepolia
What it does
This x402-enabled endpoint exposes a Questflow "swarm" agent for personal use. It accepts a text message via POST and returns a text response from the AI agent. Payment is handled inline using the x402 protocol with USDC on the Base Sepolia testnet (contract 0x036CbD53842c5426634e7929541eC2318f3dCF7e), with a maximum charge of 0.5 USDC per request (500000 in token units, assuming 6 decimals).
Questflow is a platform that creates autonomous AI "Clones" designed to scan and trade across onchain markets such as Polymarket, Pump.fun, OKX, and Opinion Labs. The broader platform focuses on prediction markets, meme coins, and crypto trading. However, this specific endpoint is labeled "Personal use" and its schema simply accepts a free-text input string and returns a free-text response string, so it appears to function as a general-purpose conversational agent rather than a trading-specific tool.
Documentation for this endpoint is extremely sparse. There is no OpenAPI spec, no dedicated docs page, and no detailed description of what the agent can do beyond the generic "Personal use" label. The endpoint is live and returns a valid x402 challenge on POST. The payment timeout is 1200 seconds (20 minutes). The endpoint is on a development API subdomain (api-dev), suggesting it may be experimental or pre-production.
Capabilities
Use cases
- —Sending messages to a Questflow AI agent and receiving text responses
- —Experimenting with x402 micropayment-gated AI agent interactions on Base Sepolia
- —Integrating a pay-per-message conversational agent into an automated workflow
Fit
Best for
- —Developers exploring x402 payment protocol with AI agents
- —Users wanting to interact with Questflow's AI swarm agents via API
- —Testing micropayment-gated conversational endpoints on a testnet
Not for
- —Production workloads requiring mainnet payments and SLAs
- —Users needing detailed API documentation or guaranteed response schemas
- —Direct trading or market execution — this endpoint only returns text responses
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f2194b1964b63f34ad8b21 \
-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. What would you like to know?"
}Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with a clear input/output schema, but documentation is essentially nonexistent. The title and description are generic ('Personal use'), there is no OpenAPI spec, no usage examples, and the endpoint runs on a testnet dev subdomain. Most details are inferred from the x402 challenge and the Questflow landing page.
Warnings
- —Endpoint is on a development subdomain (api-dev) and uses Base Sepolia testnet — likely not production-ready
- —No API documentation, OpenAPI spec, or detailed endpoint description available
- —The 'Personal use' label provides no meaningful information about agent capabilities
- —Example response is fabricated for illustration — actual agent behavior is unknown
- —USDC asset address is the Base Sepolia testnet token, not mainnet USDC
Citations
- —The endpoint returns a valid x402 challenge on POST with maxAmountRequired of 500000 USDC on Base Sepoliahttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f2194b1964b63f34ad8b21
- —Questflow is a platform for creating AI Clones that scan and trade across onchain markets like Polymarket, Pump.fun, OKX, and Opinion Labshttps://api-dev.intra-tls2.dctx.link
- —The x402 challenge specifies payment to 0x2cFcf35a68EA78003D4F321Fdd22b707BbB4e27d with a timeout of 1200 secondshttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f2194b1964b63f34ad8b21