Sylex Search MCP Server - install, status & alternatives [2026]

01 · Install Sylex Search

before you install - you'll need

Set AC_SUPABASE_URL, AC_SUPABASE_KEY before connecting.

Claude Code

claude mcp add mastadoonprime-sylex-search --transport sse https://mcp-server-production-38c9.up.railway.app/sse

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "mastadoonprime-sylex-search": {
      "url": "https://mcp-server-production-38c9.up.railway.app/sse"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://mcp-server-production-38c9.up.railway.app/sse

transport: sse

endpoint responds (non-MCP reply - review) · probed 2026-08-25

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions · remote - your agent's requests go to mcp-server-production-38c9.up.railway.app

license AGPL-3.0 - declared in the repository

npm package sylex-search - unscoped; check the name against the project README before installing

registry namespace io.github.MastadoonPrime is GitHub-verified and matches the repo owner

03 · What Sylex Search can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can search the index by natural language query. Returns ranked results with fit scores, get full product data by ID - pricing, features, integrations, reviews, browse all categories and subcategories with counts, and find similar products scored by relevance.

Capability map

Tools grouped from the project's README - what Sylex Search lets an agent do.

read & search

6 tools - e.g. Search the index by natural language query. Returns ranked results with fit scores.; Get full product data by ID - pricing, features, integrations, reviews.; Side-by-side comparison of 2-5 products.

search.discover · search.details · search.compare · search.categories · search.alternatives · search.feedback

Manage

4 tools - e.g. Add a new product or business to the index. Returns an owner token.; Verify ownership of an existing listing via URL proof.; Update listing details (description, pricing, category, etc.).

manage.register · manage.claim · manage.update · manage.list_mcp

04 · Who maintains Sylex Search

sylex-search is maintained by mastadoonprime. We track 2 MCP servers from mastadoonprime - 2 actively maintained, 4 combined GitHub stars, oldest repo from Apr 2026.

05 · Facts

repository: github.com/mastadoonprime/sylex-search
category: search - ranked #30 of 47 actively-maintained search servers as of 2026-08-25.
registry: io.github.MastadoonPrime/sylex-search (active, first published 2026-04-20 · 2 versions)
packages: npm:sylex-search

06 · Sylex Search FAQ

Is Sylex Search still maintained?

Yes - as of 2026-08-25, its last commit was 2026-04-24. We re-verify nightly.

What can Sylex Search do?

With this server connected, an agent can search the index by natural language query. Returns ranked results with fit scores, get full product data by ID - pricing, features, integrations, reviews, browse all categories and subcategories with counts, and find similar products scored by relevance.

How do I install Sylex Search?

Run `npx -y sylex-search`. The README documents 2 environment variables (AC_SUPABASE_URL, AC_SUPABASE_KEY) to set first. Set AC_SUPABASE_URL, AC_SUPABASE_KEY before connecting. You can also paste the ready-made client config above.

Does Sylex Search run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Sylex Search

Alternatives to Sylex Search

Maintained search servers if Sylex Search isn't the fit.

Pairs well with

Servers that cover what Sylex Search doesn't - only shown when the pairing reason fits the companion.

More search MCP servers · OpenResearch MCP · Openwebninja MCP · Retrieval · Scavio

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