Summary
This is a web search tool that returns structured results with titles, URLs, and snippets through a remote API endpoint hosted at web-search.api.klymax402.com. It uses x402 micropayments, which means you're paying small amounts per search query. The server connects via SSE transport, so it maintains a persistent connection for streaming responses. Reach for this when you need programmatic search capabilities with pay-per-use billing instead of a fixed API subscription. The repository itself is quite minimal with no public documentation, so you'll be working mainly with the hosted endpoint and whatever the x402 payment system requires for setup.
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Web search API for AI agents. Structured results with title, URL, snippet. Current news, docs, research. Up to 10 results per query. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"web-search": {
"url": "https://web-search.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://web-search.api.klymax402.com/api/search" \
-H "Content-Type: application/json" \
-d '{"query":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
web_search_query | POST | /api/search | $0.008 | Search the web and return structured results |
web_search_query
Semantic web search for finding relevant pages, documents, and current information. Alternative to Exa search at 3x lower cost. Returns structured JSON results with ranked matches, titles, URLs, and text snippets.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
query | string | yes | The search query |
count | number | no | Number of results to return (default: 5, max: 10) |
Example response:
{"query":"best CRM for startups 2026","results":[{"title":"Top 10 CRMs for Startups in 2026","url":"https://blog.example.com/crm-startups","snippet":"HubSpot leads the pack for early-stage startups with its free tier..."},{"title":"CRM Comparison Guide","url":"https://review.example.com/crm","snippet":"We tested 15 CRM platforms across pricing, features..."}],"totalResults":5}
When to use: answering questions about current events, finding documentation, researching competitors, or gathering data on any topic. Essential for semantic web search when the agent needs up-to-date information beyond its training data. Drop-in replacement for Exa search.
Not for: web page content extraction (use web_scrape_to_markdown), SEO analysis (use seo_audit_page), screenshot capture (use capture_screenshot), company data (use company_enrich_from_domain).
Example agent prompts
- "Semantic web search for finding relevant pages, documents, and current information"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT
Featured
Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →
