x402base-sepoliaquality 0.40

x402-payable research agent that answers queries via a simple POST interface on Base Sepolia

Price
0.5 USDC / call
Protocol
x402
Verified
no
Endpoint
https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee183c2c00f5ed07017086

What it does

The Researcher endpoint is an x402-enabled AI agent hosted by Questflow. It accepts a text prompt via HTTP POST and returns a text response from the agent. Payment is handled through the x402 protocol using USDC on the Base Sepolia testnet, with a maximum cost of 0.5 USDC per request and a timeout of up to 1200 seconds.

The endpoint exposes a minimal interface: send a JSON body with an "input" string field containing your message, and receive a JSON response with a "response" string field. The agent is described simply as "Researcher," and no further documentation is available about what specific research capabilities it offers — whether it performs web search, on-chain data analysis, or general knowledge Q&A. Questflow's broader platform focuses on AI "Clones" that aggregate on-chain markets (Polymarket, Pump.fun, OKX, etc.) for autonomous trading and alpha discovery, but it is unclear how much of that functionality is exposed through this particular endpoint.

Because the endpoint is on a development subdomain (api-dev) and uses a testnet (Base Sepolia), this appears to be a pre-production or demo deployment. No OpenAPI spec, dedicated documentation, or usage examples are published. Callers should treat this as experimental.

Capabilities

x402-paymenttext-in-text-outai-agentresearch-querybase-sepolia-usdc

Use cases

  • —Sending research questions to an AI agent and receiving text answers
  • —Integrating a pay-per-query research agent into an autonomous agent pipeline
  • —Testing x402 payment flows with a live agent endpoint on Base Sepolia

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agent-to-agent workflows needing a research sub-agent
  • —Prototyping pay-per-call AI services on testnet

Not for

  • —Production workloads requiring guaranteed SLAs (this is a dev/testnet endpoint)
  • —Users needing detailed provenance or citations in research output
  • —High-throughput batch processing (1200s max timeout per request)

Quick start

curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee183c2c00f5ed07017086 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_token>" \
  -d '{"input": "What are the latest trends in DeFi lending?"}'

Example

Request

{
  "input": "What are the latest trends in DeFi lending?"
}

Response

{
  "response": "Recent trends in DeFi lending include the rise of modular lending protocols, real-world asset (RWA) collateralization, and cross-chain lending markets..."
}

Endpoint

URLhttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68ee183c2c00f5ed07017086
Transporthttp
Protocolx402
Pay to0xf1CfB831Fc97a6F744FFF73ae285b66161819c75
CurrencyUSDC

Quality

0.40/ 1.00

The endpoint is live (402 challenge confirmed) with a clear outputSchema defining input/output fields, but there is no OpenAPI spec, no dedicated documentation, no usage examples, and the agent's actual research capabilities are undocumented. The dev subdomain and testnet payment suggest pre-production status.

Warnings

  • —Endpoint is on a development subdomain (api-dev) and uses Base Sepolia testnet — not production-ready
  • —No documentation, OpenAPI spec, or usage examples are published
  • —The agent's specific research capabilities and data sources are completely undocumented
  • —maxTimeoutSeconds is 1200 (20 minutes), suggesting potentially very long response times

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 19:18:15Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/FV8yvw