About foundrynet-search
foundrynet-search is an x402-gated web search service for AI agents. It returns structured search results or a Claude-generated answer with cited sources, and is also exposed as an MCP server.
Key features
- 01Structured web search results
- 02Claude-generated summaries with cited sources
- 03SearXNG and DuckDuckGo backends
- 04Search and enriched-search tools
Use cases
- 01Finding web pages relevant to a query
- 02Getting a sourced summary of search results
- 03Providing search results to an AI agent
MCP support
Exposes `search` and `search_enriched` tools through a Streamable HTTP MCP endpoint. An `fnet_` key bypasses payment; otherwise, the server returns an x402 payment-required response.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://foundrynet-search-production.up.railway.app/mcpclaude mcp add --transport http foundrynet-foundrynet-search https://foundrynet-search-production.up.railway.app/mcp{"mcpServers":{"foundrynet-foundrynet-search":{"type":"http","url":"https://foundrynet-search-production.up.railway.app/mcp"}}}Open in Cursor{"servers":{"foundrynet-foundrynet-search":{"type":"http","url":"https://foundrynet-search-production.up.railway.app/mcp"}}}Open in VS Code{"mcpServers":{"foundrynet-foundrynet-search":{"type":"http","url":"https://foundrynet-search-production.up.railway.app/mcp"}}}{"mcpServers":{"foundrynet-foundrynet-search":{"serverUrl":"https://foundrynet-search-production.up.railway.app/mcp"}}}Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.
Tools
Details
From the project READMEFoundryNet Search
x402-gated web search gateway for AI agents. Structured results, or an AI-summarized sourced answer. No API keys, no accounts.
Part of the FoundryNet Data Network. Pay-per-call in USDC (x402) or bypass with an fnet_ Forge key. Also exposed as an MCP server for Smithery/Glama/Claude.
Tools / Endpoints
| Tool / Route | Price | Description |
|---|---|---|
search — POST /v1/search | $0.005 | {query, max_results?} → [{title, url, snippet}] |
search_enriched — POST /v1/search/enriched | $0.02 | {query} → results + a Claude-generated, source-cited summary |
Backends: SearXNG (JSON, if SEARXNG_URL configured) + DuckDuckGo (HTML) — free. Enrichment via Claude.
MCP
Streamable HTTP endpoint: https://foundrynet-search-production.up.railway.app/mcp
claude mcp add --transport http foundrynet-search https://foundrynet-search-production.up.railway.app/mcp
Tools list without auth (discoverable). Pass an fnet_ key as api_key (or Authorization: Bearer) to bypass payment; otherwise the tool returns an x402 payment_required object.
Payment (x402)
Standard x402 v2 on Solana mainnet USDC. Discovery: GET /x402, GET /.well-known/x402, per-route 402 at GET /x402/{route}. Validated on 402 Index.
Volume play — every agent needs web search, and $0.005/query is cheaper than most alternatives.
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.