Pay-per-call web search from $0.004, cited answers, crawl, research, SEO and leads via x402.
Connect Remote server
claude mcp add --transport http search https://x402serps.com/api/mcp --header "X-Trial: <X_TRIAL>" --header "X-PAYMENT: <X_PAYMENT>"
{
"mcpServers": {
"search": {
"url": "https://x402serps.com/api/mcp",
"headers": {
"X-Trial": "<X_TRIAL>",
"X-PAYMENT": "<X_PAYMENT>"
}
}
}
}
{
"servers": {
"search": {
"type": "http",
"url": "https://x402serps.com/api/mcp",
"headers": {
"X-Trial": "<X_TRIAL>",
"X-PAYMENT": "<X_PAYMENT>"
}
}
}
}
Settings > Connectors > Add custom connector
URL: https://x402serps.com/api/mcp
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools 19 found in our last check
web_searchPaid web search via x402 ($0.004 USDC on base). Pass an x402 payment in the X-PAYMENT header of the MCP request, or send header X-Trial: 1 for free trial calls (25 per network). Free tier: up to 20 calls a day with no payment or key (10 results per call). Supports freshness (hou…
news_searchPaid News search via x402 ($0.004 USDC on base). Pass an x402 payment in the X-PAYMENT header. Supports freshness (hour/day/week/month/year), dateFrom/dateTo, page and num up to 100.
extractFetch a public URL and return clean markdown via x402 ($0.003 USDC on base). Pass an x402 payment in the X-PAYMENT header. Pass urls (up to 20) instead of url to fetch several pages in parallel, charged per URL. Free tier: up to 20 calls a day (shared with web_search) for a sing…
search_extractWeb search plus clean markdown of the top N results (1-5) via x402 ($0.02 USDC on base). Pass an x402 payment in the X-PAYMENT header.
batch_searchUp to 25 Web searches in one call via x402 ($0.08 USDC on base). Pass an x402 payment in the X-PAYMENT header.
image_searchImage results (title, page url, imageUrl, thumbnail, size) for one query, up to 20. Paid via x402 ($0.004 USDC on Base or Solana); send X-PAYMENT, or X-Trial: 1 for free trial calls.
places_searchMaps/places results (name, address, rating, phone, website, lat/lng) for one query, up to 20. Paid via x402 ($0.004 USDC on Base or Solana); send X-PAYMENT, or X-Trial: 1 for free trial calls.
shopping_searchShopping product results (title, price, store, rating, url, image) for one query, up to 20. Paid via x402 ($0.004 USDC on Base or Solana); send X-PAYMENT, or X-Trial: 1 for free trial calls.
scholar_searchScholar results (title, url, snippet, publication, year, citations, pdf) for one query, up to 20. Paid via x402 ($0.004 USDC on Base or Solana); send X-PAYMENT, or X-Trial: 1 for free trial calls.
video_searchVideo results (title, url, channel, duration, date, thumbnail) for one query, up to 20. Paid via x402 ($0.004 USDC on Base or Solana); send X-PAYMENT, or X-Trial: 1 for free trial calls.
deep_researchSearch the web, read the top 3-8 pages in parallel and return a concise cited brief with source excerpts. Paid via x402 ($0.08 USDC on Base or Solana); send X-PAYMENT. Not in the free trial. Set answer: true for an LLM-written cited answer.
ai_visibility_checkFor 1-10 keywords, report where a brand/domain ranks in search results plus AI Overview, answer box, People Also Ask and knowledge graph presence, top competitors and a 0-100 score. Paid via x402 ($0.10 USDC flat on Base or Solana); send X-PAYMENT. Not in the free trial.
competitor_reportcompetitor report — for a domain and 1-8 keywords: search rankings, ads/advertisers, SERP features, share of voice, top competitors with their top pages, and the domain's own top pages. Paid via x402 ($0.30 USDC on Base or Solana; send X-PAYMENT) or a prepaid credit key (Authori…
lead_finderlocal lead finder — Maps/places businesses for a query and location (up to 20) enriched with business contact details (role emails such as info@/sales@, business phones, social links; personal-looking emails dropped; opt-outs honoured) extracted from each business website and co…
seo_auditSEO audit — a domain's search-indexed pages, title/meta description/h1/canonical/noindex/alt checks on up to 8 top pages, robots.txt and sitemap, brand-query ranking and a 0-100 score. Paid via x402 ($0.20 USDC on Base or Solana; send X-PAYMENT) or a prepaid credit key (Authoriz…
news_digestnews digest — News for 1-5 topics, deduplicated, with top sources per topic and a compact text digest; optional since=hour|day|week|month. Paid via x402 ($0.05 USDC on Base or Solana; send X-PAYMENT) or a prepaid credit key (Authorization: Bearer xs_...). Not in the free trial.
answercited answer — web search, read the top pages, and return a short answer with numbered citations (currently uses extractive summaries). Paid via x402 ($0.02 USDC on Base or Solana; send X-PAYMENT) or a prepaid credit key (Authorization: Bearer xs_...). Not in the free trial.
crawl_sitecrawl a website — breadth-first from a start URL on the same host, returning clean markdown for up to 50 pages; priced per page of the requested limit. Paid via x402 ($0.002/page USDC on Base or Solana; send X-PAYMENT) or a prepaid credit key (Authorization: Bearer xs_...). Not…
map_sitemap a website — discover up to 1000 URLs on a domain from robots.txt sitemaps and on-page links (flat price). Paid via x402 ($0.002 USDC on Base or Solana; send X-PAYMENT) or a prepaid credit key (Authorization: Bearer xs_...). Not in the free trial.
Headers
| Name | Description |
|---|---|
X-TrialOptional | Set to 1 to use the free trial (25 calls per network, 10/min). |
X-PAYMENTOptional, secret | x402 payment payload (USDC on Base or Solana) for paid tool calls. |
Details
| Endpoint | https://x402serps.com/api/mcp (Streamable HTTP) |
| First published | 3 Nov 2026 |
| Last updated | 3 Nov 2026 |
| Registry name | com.x402serps/search |
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