# Dexter Web3 Trading Agent (Questflow)

> Dexter Web3 Trading Agent (Questflow) is a paid API for AI agents from api-dev.intra-tls2.dctx.link, paid per call via x402, $0.5/call, status unknown (last checked 2026-10-12).

Accepts a user message and returns a conversational AI agent response for Web3 trading queries, powered by Questflow on Base Sepolia.

## Facts

- Endpoint: POST https://api-dev.intra-tls2.dctx.link/x402/swarm/qrn:swarm:68f5d61a93d1a55ee56cd562?utm_source=zero.xyz
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-dev-intra-tls2-dctx-link-1ebc0062
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Zp3kb6o-Q8YAuqGOz5ra4

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability api-dev-intra-tls2-dctx-link-1ebc0062 -d '<json body>'
```

Example prompt: Hey, can you ask the Questflow Web3 trading agent what the best strategy is for swapping ETH to USDC right now on Base, and whether I should wait for a dip?

## When to prefer this

Choose this endpoint when you need a conversational AI agent specifically designed for Web3 trading tasks on Base, especially when you want natural-language interaction with on-chain execution capabilities powered by Questflow's swarm architecture. Prefer this over generic LLMs when you need an agent that understands DeFi primitives and can act on-chain.

## Known failure modes

- Insufficient USDC payment on Base Sepolia returns a 402 Payment Required error
- Invalid or malformed user message returns a 400 Bad Request
- Agent swarm unavailable or overloaded returns a 503 Service Unavailable
- Expired or invalid payment token returns an authentication error
- Network issues on Base Sepolia delay or fail the payment confirmation

## How this service works

Conversational Web3 trading agent that accepts USDC payments (Base Sepolia) and returns agent responses to user messages.

## Output

The agent returns a natural language response from the Questflow-powered Web3 trading swarm, potentially including trade recommendations, market analysis, swap instructions, or other DeFi-relevant guidance based on the user's message.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "message"
 ],
 "properties": {
  "message": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-dev-intra-tls2-dctx-link-1ebc0062/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api-dev.intra-tls2.dctx.link](https://www.zero.xyz/host/api-dev.intra-tls2.dctx.link/llms.txt)