Tavily web search, extract, map, and crawl tools accessible via x402 micropayment on Base Sepolia.
What it does
This endpoint exposes a Tavily MCP server wrapped as an x402-payable agent, hosted by Questflow. It provides four core web-interaction tools: real-time web search (tavily-search), intelligent data extraction from web pages (tavily-extract), structured website mapping, and systematic web crawling. The agent accepts a natural-language prompt via a simple POST body and returns a text response.
Payment is handled through the x402 protocol on the Base Sepolia testnet, using USDC (contract 0x036CbD53842c5426634e7929541eC2318f3dCF7e) with a maximum charge of 100,000 units per request. The endpoint requires an X-PAYMENT header conforming to x402 version 1. The maximum request timeout is 1,200 seconds (20 minutes), which suggests that crawl or map operations may take significant time.
Documentation is minimal. There is no OpenAPI spec, no dedicated docs page, and no detailed schema beyond the x402 challenge payload. The input is a single string field ("input") and the output is a single string field ("response"). All capability claims come from the x402 challenge description; no independent verification of tool availability or response format is possible from the provided material.
Capabilities
Use cases
- —Real-time web search queries from an AI agent pipeline
- —Extracting structured data from specific web pages
- —Mapping the structure of a target website
- —Crawling websites systematically for content aggregation
- —Augmenting LLM responses with live web information
Fit
Best for
- —AI agents needing live web search via micropayment
- —Developers prototyping x402-based search workflows on testnet
- —Pipelines requiring on-demand web extraction without API key management
Not for
- —Production workloads requiring mainnet payment (this uses Base Sepolia testnet)
- —Users needing detailed API documentation or guaranteed SLAs
- —High-volume bulk crawling with predictable per-page pricing
Quick start
curl -X POST https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:68ee165dd8b26d2e2dffa01c \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{"input": "Search the web for the latest AI agent frameworks"}'Example
Request
{
"input": "Search the web for the latest AI agent frameworks"
}Response
{
"response": "Here are the latest AI agent frameworks: ..."
}Endpoint
Quality
No OpenAPI spec, no docs endpoint, no examples, and no independent verification of tool behavior. All information is inferred from the x402 challenge description and the Questflow landing page. The endpoint is on a testnet, and the input/output schema is extremely minimal.
Warnings
- —Payment is on Base Sepolia testnet — not suitable for production use
- —No OpenAPI or documentation endpoint found (404 on /docs, /api, /README)
- —Output schema is a single opaque string; no structured tool-level responses documented
- —All capability claims (search, extract, map, crawl) come solely from the x402 challenge description and are unverified
- —Maximum timeout of 1200 seconds suggests potentially very long response times
Citations
- —The endpoint uses x402 version 1 with USDC on Base Sepolia, maxAmountRequired 100000, payTo 0xcD5CAc332866383842e5d48C4c40A606B5D8DA79https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:68ee165dd8b26d2e2dffa01c
- —The agent description lists search, extract, map, and crawl tools powered by Tavily MCP serverhttps://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:68ee165dd8b26d2e2dffa01c
- —Questflow is the hosting platform, described as an AI Clone / agent economy platformhttps://api-dev.intra-tls2.dctx.link