An agent can get web search through an MCP server (usually with your own API key for the underlying search provider) or by paying per query over x402 with no account. MCP servers below come from the Official MCP Registry; those with a published remote endpoint are listed first because they need no local install.
We have no usage data for MCP servers, so their order is by relevance only. Pay-per-call APIs are ranked by payment-verified trust from on-chain settlements.
| # | Listing | Listed price | Rail | Trust | Verified buyers 30d | Uptime 30d |
|---|---|---|---|---|---|---|
| 1 | Web Search API MCP server · remote endpoint Web search returning structured results — titles, URLs, snippets. x402 micropayment. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 2 | AIsa Web Search & Research MCP server · remote endpoint Web search and page extraction across several independent search providers. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 3 | com.jojapi/google-web-search MCP server · remote endpoint Google Web Search: Google Web Search API. Search the world’s information, including webpages. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 4 | ai.keenable/web-search MCP server · remote endpoint Live web search and clean-markdown page fetch over the Keenable web index. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 5 | ai.groundroute/web-search MCP server · remote endpoint Web search for AI agents — one tool across 6 engines, routed to the cheapest + cached. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 6 | Web Search & Data API MCP server · remote endpoint Web search, scraping, Google Trends and data lookups. Paid per call in USDC on Base via x402. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 7 | Parallel Search MCP MCP server · remote endpoint The best web search for your AI Agent Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 8 | AgentsHub Web Search MCP server · remote endpoint Live web search for AI agents. $0.001/call, x402 on Base, no API key. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 9 | SERPdive Web Search MCP server · remote endpoint AI-agent web search, answer-ready content. Beats Tavily: 60.7% of quality duels, 20.2% fewer tokens. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 10 | search-mcp MCP server · remote endpoint Web search and clean-text page fetch for AI agents, with SSRF protection. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 11 | Iskat — Russian-language web search for agents MCP server · remote endpoint Russian-language web search for agents: hybrid retrieval, product prices, full page text Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 12 | Brainiall Web MCP server · remote endpoint Web search, URL content extraction to Markdown, site mapping, and recursive web crawler. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 13 | Penny Search MCP server · remote endpoint Low-cost live web search for current facts, news, research, docs, and web grounding via x402. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 14 | Ninelayer MCP server · remote endpoint Agent-native search engine with live web research optimized for AI agents. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| 15 | Exa Search MCP server · remote endpoint Search the live web and fetch clean content from source pages. Source: MCP Registry. | n/a | n/a | none | n/a | n/a |
| # | Listing | Listed price | Rail | Trust | Verified buyers 30d | Uptime 30d |
|---|---|---|---|---|---|---|
| 1 | Exa Pay-per-call API Neural web search and page-content retrieval for AI agents, paid per request with no API key. Source: MPP registry. | $0.007 per call | mpp, x402 | 87 | 166 | 99.7% |
| 2 | BlockRun Pay-per-call API x402 gateway giving pay-per-call access to LLM inference, web search, prediction market data and crypto data, paid in USDC on Base with no account or API key. Source: x402-list.com. | $0.003–$0.01 per call | x402 | 86 | 425 | 100% |
| 3 | ForgeMesh x402 Router Pay-per-call API Paid search API over a registry of x402 services, with filters for category, tag, health status and reputation score. Source: x402-list.com. | $0.001 per call | x402 | 52 | 9 | 99.4% |
| 4 | x402 Crypto Research API Pay-per-call API Current crypto research reports with cited sources, paid per request in USDC through x402. Source: x402-list.com. | $0.01 per call | x402 | 11 | 1 | 89.8% |
| 5 | Straelo Relay Pay-per-call API Straelo Relay provides machine-consumable web research, search, structured evidence, content extraction, domain intelligence, email validation, and read-only blockchain data servic Source: x402-list.com. | $0.003–$0.03 per call | x402 | none | 3 | 100% |
| 6 | Scout — evidence-first research Pay-per-call API Paid public web research with exact source quotes and hashes, preserved conflicts and identity ambiguity, a structured brief, and a propose-only receipt. Quick costs $0.50 USDC; De Source: x402-list.com. | $0.–$2.00 per call | x402 | none | 0 | 100% |
| 7 | Agent Search (CyberWareX) Pay-per-call API Web search API for agents Source: x402-list.com. | $0.003 per call | x402 | none | 0 | 100% |
| 8 | Neurobird Search Pay-per-call API Web search for AI agents. One call fans out across several engines, fuses the rankings with reciprocal rank fusion, then fetches the top pages and returns the passages that answer Source: x402-list.com. | $0.005 per call | x402 | none | 0 | 100% |
| 9 | RONIN Search Router Pay-per-call API Cited web research and source verification for autonomous agents. Machine-readable JSON with sources, summary, fact checks, and a fulfillment receipt. Pay per call in Base USDC via Source: x402-list.com. | $0.01 per call | x402 | none | 0 | 96.6% |
| 10 | Tavily Search Pay-per-call API Web search API for AI agents. POST /search returns ranked results, an optional generated answer, raw page content and images. Search depth is always advanced. $0.01 per call in USD Source: x402-list.com. | $0.01 per call | x402 | none | 0 | 99.8% |
| 11 | MicroTap Pay-per-call API · multi-endpoint (topic is one of many) 20 monetized HTTP APIs on the x402 protocol — prediction markets (Polymarket, Kalshi), DeFi/crypto data, multi-chain on-chain reads, live weather, real-time web search, and cross-p Source: x402-list.com. | $0.001–$0.05 per call | x402 | 78 | 49 | 100% |
| 12 | fetcher.sh — Twitter, TikTok, Instagram & Web Data APIs Pay-per-call API · multi-endpoint (topic is one of many) 111+ web-data endpoints across 11 services (Twitter/X, TikTok, Instagram, YouTube, Reddit, Google Search/Maps/News/Play, App Store, Yelp). $0.001–$0.05/call, paid via x402 or prepa Source: x402-list.com. | $0.002–$0.005 per call | x402 | 74 | 30 | 100% |
| 13 | CONNSKILL Growth Services Pay-per-call API · multi-endpoint (topic is one of many) Local market checks, domain rankings and keyword research for AI agents. The Local Market Check combines Google search, Maps listings, observed competitors and optional own-domain Source: x402-list.com. | $0.005–$18.00 per call | x402 | 70 | 22 | 99.9% |
| 14 | PennyRail Pay-per-call API · multi-endpoint (topic is one of many) Agent transaction router for paid machine services. Agents discover and quote capabilities for free, then pay per execution with x402 USDC on Base. Includes live web search, AI, da Source: x402-list.com. | $0.001–$0.02 per call | x402 | 43 | 4 | 88.2% |
| 15 | Web Search & Data API — SERP, page reader & scrapers Pay-per-call API · multi-endpoint (topic is one of many) Pay-per-call web search and web data for AI agents. Multi-engine SERP (web + news, batch, rank-fused), search-and-read (top hits to markdown in one call), URL-to-markdown scraping, Source: x402-list.com. | $0.005–$0.15 per call | x402 | none | 57 | 88.2% |
Machine-readable: JSON for this page · llms.txt · Corrections: hello@agentropolis.io