Pay-per-call marketing AI agent on Base Sepolia via x402, powered by Questflow
What it does
Marketer is an AI agent endpoint accessible via the x402 payment protocol on the Base Sepolia testnet. It accepts a text message as input and returns a text response from a marketing-focused agent. Payment is made in USDC (asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e) with a maximum cost of 0.5 USDC per request (500000 in token units) and a timeout of up to 1200 seconds.
The endpoint is part of the Questflow platform, which provides AI "clones" that operate across onchain markets such as Polymarket, Pump.fun, OKX, and Opinion Labs. The specific capabilities of this "Marketer" agent are not documented beyond the name and the generic input/output schema: you send a string message and receive a string response. No OpenAPI spec, detailed documentation, or usage examples are published for this endpoint.
Because this runs on Base Sepolia (a testnet), it is likely intended for development and experimentation rather than production use. The lack of documentation, examples, and a formal API spec means integrators will need to experiment to understand the agent's actual marketing capabilities and response quality.
Capabilities
Use cases
- —Generating marketing copy or strategy suggestions via a pay-per-call AI agent
- —Testing x402 payment-gated agent interactions on Base Sepolia testnet
- —Integrating an AI marketing assistant into an agent-to-agent workflow
Fit
Best for
- —Developers experimenting with x402 payment protocol integrations
- —Testing pay-per-call AI agent workflows on a testnet
- —Exploring Questflow's swarm agent ecosystem
Not for
- —Production marketing automation (testnet only)
- —Users needing detailed API documentation or guaranteed SLAs
- —Non-crypto workflows that require traditional API authentication
Quick start
curl -X POST \
https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8560aed94064fa9cb5369 \
-H 'Content-Type: application/json' \
-H 'X-PAYMENT: <x402_payment_header>' \
-d '{"input": "Write a launch tweet for our new DeFi product"}'Example
Request
{
"input": "Write a launch tweet for our new DeFi product"
}Response
{
"response": "Introducing [Product] — the next generation of DeFi yield optimization. Earn more, risk less, sleep easy. Live now on Base. 🚀"
}Endpoint
Quality
No OpenAPI spec, no documentation pages (all return 404), no usage examples, and the endpoint runs on a testnet. The only concrete information comes from the x402 challenge payload, which provides a minimal input/output schema and payment details. The agent's actual marketing capabilities are entirely undocumented.
Warnings
- —Runs on Base Sepolia testnet — not suitable for production use
- —No API documentation available; /docs, /api, /pricing, /README all return 404
- —Agent capabilities are undocumented beyond the name 'Marketer'
- —Response quality and behavior are unknown — no examples or test results available
- —The example response JSON is fabricated for illustration; actual output is unverified
Citations
- —Payment is in USDC on Base Sepolia with maxAmountRequired of 500000 and maxTimeoutSeconds of 1200https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8560aed94064fa9cb5369
- —The endpoint accepts a POST with a string 'input' field and returns a string 'response' fieldhttps://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8560aed94064fa9cb5369
- —Questflow provides AI clones that aggregate markets including Polymarket, Pump.fun, OKX, and Opinion Labshttps://api-dev.intra-tls2.dctx.link
- —The payTo address is 0xA9CB5c96c0aB4b5aDcb226042197Fe9D85fa74f5https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f8560aed94064fa9cb5369