Sylex Search
Sylex Search is a universal product/service discovery MCP server that lets AI agents search, evaluate, compare, and manage listings across 14,000+ products, services, and businesses.
Search & Discovery
search.discover— Search using natural language queries with optional filters (source, category, price, team size, rating, free tier); returns ranked results with fit scoressearch.details— Retrieve full product data by ID, including pricing tiers, features, integrations, and review sentimentsearch.compare— Side-by-side comparison of 2–5 productssearch.categories— Browse all categories and subcategories with entry countssearch.alternatives— Find similar products scored by relevancesearch.services— Discover agent infrastructure services (memory, auth, billing, logging, monitoring) with MCP connection configssearch.feedback— Report bad results, missing products, wrong data, or suggestions
Listing Management
manage.register— Add a new product or business to the index; returns an owner tokenmanage.claim— Claim or recover ownership of an existing listing via URL-based verificationmanage.update— Update listing details (name, description, pricing, category, custom fields)manage.list_mcp— Add or update MCP connection config so other agents can auto-discover and connect to your listing
Guided Workflows (Prompts)
search-workflow— Step-by-step guide: discover → details → compare → recommendproduct-evaluation— Thorough evaluation flow: find product → get details → find alternatives → verdict
Search for and retrieve detailed information about Asana, including features, pricing, and alternatives for project management.
Search for Django and access details about its features, pricing, and alternatives for Python web frameworks.
Search for FastAPI and access details about its features, pricing, and alternatives for Python web frameworks.
Search for Flask and access details about its features, pricing, and alternatives for Python web frameworks.
Search for HubSpot and access details about its features, pricing, and alternatives for CRM solutions.
Search for Linear and access details about its features, pricing, and alternatives for project management.
Search for MobX and access details about its features, pricing, and alternatives for state management.
Search for Notion and access details about its features, pricing, and alternatives for project management.
Search for Redux and access details about its features, pricing, and alternatives for state management.
Search for Salesforce and access details about its features, pricing, and alternatives for CRM solutions.
Search for Sanic and access details about its features, pricing, and alternatives for Python web frameworks.
Sylex Search — Universal Search for AI Agents
Sylex Search is an MCP server that lets AI agents discover, evaluate, and compare products, services, and businesses across every category.
Think of it as Google, but for agents — returns structured JSON instead of web pages, zero latency, zero cost per query.
Connect
SSE (recommended)
Add to your MCP client config (Claude Desktop, Claude Code, Cursor, etc.):
{
"mcpServers": {
"sylex-search": {
"url": "https://search.sylex.ai/sse"
}
}
}Via Smithery
smithery mcp add mastadoonprime/sylex-searchVia npm (local stdio proxy)
npx sylex-searchWhy this exists
McKinsey projects $1 trillion in sales will flow through AI agents. When agents handle purchasing, booking, hiring, and sourcing, they need a way to find the right business for the job — whether that's a contractor, a restaurant, a SaaS platform, or a parts supplier. If a business isn't in the index, it's invisible to agents.
Sylex Search is the discovery layer for agent commerce.
What's in the index
14,000+ entries and growing:
Source | Count | What |
npm | ~3,000 | JavaScript/TypeScript packages |
crates.io | ~3,000 | Rust crates |
Wikidata | ~2,800 | Products, companies, protocols |
MCP servers | ~2,100 | MCP tools from awesome-mcp-servers |
GitHub | ~1,900 | Popular repositories |
PyPI | ~1,000 | Python packages |
SaaS | ~100 | SaaS products |
The index started with software packages as seed data, but Sylex Search is not software-specific. The schema and tools support any product, service, or business.
Tools
Search & Discovery
Tool | Description |
| 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. |
| Browse all categories and subcategories with counts. |
| Find similar products scored by relevance. |
| Report issues or suggest improvements. |
Listing Management
Tool | Description |
| 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.). |
| Add MCP connection config so other agents can discover and connect. |
Prompts
Prompt | Description |
| Step-by-step guide: discover → details → compare → recommend. |
| Thorough evaluation: find product → get details → find alternatives → verdict. |
Example queries
"react state management"→ zustand, redux, mobx, jotai"python web framework"→ Django, Flask, FastAPI, Sanic"project management tool for small teams"→ Notion, Linear, Asana"CRM with Slack integration"→ HubSpot, Salesforce, Pipedrive
Use with agent frameworks
LangChain
from langchain_mcp_adapters.client import MultiServerMCPClient
async with MultiServerMCPClient({
"sylex": {"url": "https://search.sylex.ai/sse", "transport": "sse"}
}) as client:
tools = client.get_tools()OpenAI Agents SDK
from agents import Agent
from agents.mcp import MCPServerSse
server = MCPServerSse(url="https://search.sylex.ai/sse")
agent = Agent(name="shopper", mcp_servers=[server])Microsoft AutoGen
from autogen_ext.tools.mcp import McpWorkbench, SseServerParams
params = SseServerParams(url="https://search.sylex.ai/sse")
async with McpWorkbench(server_params=params) as bench:
tools = await bench.list_tools()CrewAI
from crewai import Agent
from crewai_tools import MCPTool
sylex_tools = MCPTool.from_sse(url="https://search.sylex.ai/sse")
agent = Agent(role="researcher", tools=sylex_tools)Architecture
Zero LLM calls — deterministic search (SQLite FTS + custom ranking)
Millisecond responses — no API calls, no model inference
$0 per query — no token costs
Structured JSON — agents parse directly, no scraping needed
Agents-first — no dashboards, no accounts, no human UI
MCP native — built on the Model Context Protocol standard
Self-service — any business can register, claim, and manage its listing through tool calls
Server metadata
Property | Value |
Transport | SSE |
Quality score | 100/100 (Smithery) |
Version | 0.1.2 |
Tools | 11 |
Prompts | 2 |
Auth required | No |
Config required | No |
For agents
Server card available at:
GET https://search.sylex.ai/.well-known/mcp/server-card.jsonThis returns full server metadata including all tools, prompts, and connection details — no MCP session required.
Self-hosting
pip install -r requirements.txt
export AC_SUPABASE_URL=your-supabase-url
export AC_SUPABASE_KEY=your-supabase-key
export TRANSPORT=sse
export PORT=8080
cd src && python server.pyLicense
AGPL-3.0 — see LICENSE for details.
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