x402-payable research agent by Questflow — send a prompt, get a researched response via USDC on Base Sepolia.
What it does
The Researcher endpoint is an x402-protocol agent hosted by Questflow on their development API. It accepts a text prompt via HTTP POST and returns a research-oriented response from an AI agent. Payment is handled inline using the x402 payment protocol: callers must attach an X-PAYMENT header with a USDC payment on the Base Sepolia testnet (up to 0.5 USDC per request, using the USDC contract at 0x036CbD53842c5426634e7929541eC2318f3dCF7e).
The endpoint schema is minimal: the request body takes a single `input` string field (your message/question to the agent), and the response returns a single `response` string field. The maximum timeout is 1200 seconds (20 minutes), suggesting the agent may perform non-trivial research or multi-step reasoning before returning results. Questflow's broader platform focuses on autonomous AI agents that scan onchain markets, prediction platforms, and crypto ecosystems, so this researcher agent likely has capabilities in those domains, though the exact scope is not documented.
This is a development/testnet endpoint (api-dev, base-sepolia), so it should be treated as experimental. No OpenAPI spec, dedicated documentation, or usage examples are available beyond the x402 challenge metadata. The payment recipient address is 0xbAee67b881e486f1b9F4518305224e9A8D380D9B.
Capabilities
Use cases
- —Asking research questions and receiving AI-generated analysis via a pay-per-request model
- —Integrating an autonomous research agent into agent-to-agent workflows using x402 payments
- —Querying crypto, prediction market, or onchain topics through a paid AI endpoint
Fit
Best for
- —Developers experimenting with x402 payment protocol integrations
- —Agent-to-agent communication where one agent pays another for research
- —Exploring Questflow's swarm agent capabilities on testnet
Not for
- —Production workloads requiring guaranteed uptime (this is a dev/testnet endpoint)
- —Users needing detailed, documented API contracts or OpenAPI specs
- —Free or unpaid research queries
Quick start
curl -X POST \
https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68dcbb9bab3e24a6307ad4df \
-H 'Content-Type: application/json' \
-H 'X-PAYMENT: <x402-payment-token>' \
-d '{"input": "What are the latest trends in prediction markets?"}'Example
Request
{
"input": "What are the latest trends in prediction markets?"
}Response
{
"response": "Prediction markets have seen significant growth in 2024, driven by platforms like Polymarket..."
}Endpoint
Quality
The listing is based almost entirely on x402 challenge metadata. There is no OpenAPI spec, no documentation, no usage examples, and no pricing page. The endpoint is on a dev/testnet domain. The input/output schema is minimal and inferred from the x402 outputSchema field.
Warnings
- —This is a development/testnet endpoint (api-dev, base-sepolia) — not suitable for production use.
- —No OpenAPI spec or dedicated documentation is available.
- —No docs, pricing page, or README could be found on the API host.
- —The example response is fabricated to illustrate the schema; actual responses are unknown.
- —Max timeout of 1200 seconds suggests potentially very long response times.
Citations
- —Payment uses USDC on Base Sepolia with maxAmountRequired of 500000 (0.5 USDC) and asset contract 0x036CbD53842c5426634e7929541eC2318f3dCF7ehttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68dcbb9bab3e24a6307ad4df
- —The endpoint accepts a POST with an 'input' string field and returns a 'response' string field, with maxTimeoutSeconds of 1200https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68dcbb9bab3e24a6307ad4df
- —Questflow platform focuses on AI clones that aggregate Polymarket, Pump.fun, Opinion Labs, OKX and onchain marketshttps://api-dev.intra-tls2.dctx.link
- —Description from x402 challenge: 'Researcher | Powered by Questflow'https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68dcbb9bab3e24a6307ad4df