x402-payable agent returning Hello World UI block designs in various styles
What it does
This endpoint is an x402-gated agent hosted on Questflow's development API that generates a set of Hello World UI blocks spanning minimal centered layouts, gradient designs, animations, and neon-styled versions. It accepts a text prompt via a POST request with an `input` field and returns a string response from the agent.
Payment is required via the x402 protocol on the Base Sepolia testnet using USDC (contract 0x036CbD53842c5426634e7929541eC2318f3dCF7e). The maximum amount required per request is 500,000 units (likely 0.50 USDC given 6 decimals), with a maximum timeout of 1,200 seconds. The endpoint is discoverable and uses the "exact" payment scheme.
Documentation is extremely sparse — there is no OpenAPI spec, no dedicated docs page, and no usage examples beyond the x402 challenge metadata. The parent platform, Questflow, is primarily an AI clone/agent economy platform focused on onchain trading and prediction markets; this particular endpoint appears to be a demo or showcase agent for front-end UI component generation. The output schema indicates a simple string response, so the exact format and richness of the returned UI blocks is unknown.
Capabilities
Use cases
- —Generating sample Hello World UI blocks in various visual styles
- —Demonstrating modern front-end design patterns via an AI agent
- —Showcasing x402 micropayment-gated agent interactions
- —Prototyping UI component ideas with gradient, animation, and neon themes
Fit
Best for
- —Developers exploring x402 payment protocol with a simple demo agent
- —Front-end designers seeking quick UI block inspiration
- —Teams evaluating Questflow's agent-as-a-service platform
Not for
- —Production UI component generation at scale (this is a dev/demo endpoint on testnet)
- —Users needing free or unauthenticated access to design tools
- —Complex multi-step design workflows requiring structured output formats
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{"input": "Generate a neon-styled Hello World UI block"}'Example
Request
{
"input": "Generate a neon-styled Hello World UI block"
}Response
{
"response": "Here is a neon-styled Hello World UI block: <div style='background: #0a0a0a; border: 2px solid #0ff; box-shadow: 0 0 20px #0ff; padding: 2rem; text-align: center;'><h1 style='color: #0ff; text-shadow: 0 0 10px #0ff;'>Hello World</h1></div>"
}Endpoint
Quality
No OpenAPI spec, no docs, no usage examples, and no real response samples are available. The only structured information comes from the x402 challenge metadata. The endpoint is on a dev/testnet domain, and the response format is entirely inferred.
Warnings
- —Endpoint is on a development domain (api-dev) using Base Sepolia testnet — not production
- —No OpenAPI specification or documentation available
- —Response format and content are entirely inferred from minimal outputSchema metadata
- —No real response examples exist; the example_response_json above is fabricated for illustration
- —Parent platform Questflow focuses on trading/prediction markets; this agent appears to be a demo
Citations
- —Payment uses Base Sepolia testnet with USDC asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e and maxAmountRequired of 500000https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5
- —The endpoint accepts a POST with an 'input' string field and returns a 'response' string field per the outputSchemahttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5
- —Maximum timeout is 1200 seconds and payment scheme is 'exact'https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5976da985c01d2e6266e5
- —Questflow is an AI clone/agent economy platformhttps://api-dev.intra-tls2.dctx.link