Sylex Search

mastadoonprime/sylex-search

Gives AI agents a structured search engine for discovering products, services, and businesses across 14,000+ entries from npm, PyPI, crates.io, GitHub, Wikidata, and SaaS listings. Exposes tools for natural language search with ranked results, side-by-side comparisons, alternative discovery, and full product details including pricing and integrations. Also includes self-service listing management so any business can register, claim, and update their entry via tool calls. Returns deterministic JSON from SQLite FTS with zero LLM costs or latency. Runs as a hosted SSE endpoint at search.sylex.ai with no auth required, or self-host with Supabase. Useful when your agent needs to find and evaluate options instead of hitting traditional search APIs that return HTML.

GitHub stars: 3
tools: 10
transport: STDIO, SSE
last updated: Apr 21, 2026

View on GitHub

Tools

10 tools

Public tool metadata for what this MCP can expose to an agent.

search.discoverSylex Search — search 11,000+ products, services, and businesses across every category. Returns ranked results with fit scores. Start here, then use 'details' or 'compare'. If results seem off, use 'feedback' to report it — we're actively improving.9 params

Sylex Search — search 11,000+ products, services, and businesses across every category. Returns ranked results with fit scores. Start here, then use 'details' or 'compare'. If results seem off, use 'feedback' to report it — we're actively improving.

Parameters* required

categorystring

Filter by category slug. Use 'categories' tool to see available categories. Examples: project-management, crm, communication, design, development, analytics, marketing, hr, finance, security, ai-ml...

has_free_tierboolean

Only show products with a free plan/tierdefault: false

max_pricenumber

Maximum price per unit in USD

max_resultsinteger

Maximum results to return (default 5, max 20)default: 5

min_ratingnumber

Minimum rating (0-5 scale)

querystring

Natural language search query, e.g. 'project management tool for small teams' or 'CRM with Slack integration'

sourcestring

Filter by data source: 'saas', 'npm', 'pypi', 'crates', 'github', 'wikidata'. Omit to search everything.

subcategorystring

Filter by subcategory slug. Use 'categories' tool to see subcategories within a category.

team_sizeinteger

Your team size — filters to products that support this team size

search.detailsGet full details for a specific product by ID. Returns complete data including pricing tiers, features, integrations, review sentiment, and alternatives. Use after 'discover' to deep-dive on a candidate. Data shape varies per product — each product describes itself differently.1 params

Get full details for a specific product by ID. Returns complete data including pricing tiers, features, integrations, review sentiment, and alternatives. Use after 'discover' to deep-dive on a candidate. Data shape varies per product — each product describes itself differently.

Parameters* required

product_idinteger

Product ID from discover results

search.compareCompare 2-5 products side-by-side. Returns full data for each product so you can analyze pricing, features, and fit differences. Use after 'discover' when you have multiple candidates to evaluate. Each product's data may have a different shape — compare what's relevant to the...1 params

Compare 2-5 products side-by-side. Returns full data for each product so you can analyze pricing, features, and fit differences. Use after 'discover' when you have multiple candidates to evaluate. Each product's data may have a different shape — compare what's relevant to the...

Parameters* required

product_idsarray

List of product IDs to compare (2-5 products)

search.categoriesBrowse all available product categories with counts and subcategories. Use this to understand what's in the index before searching, or to find the right category/subcategory slugs for filtered searches.

Browse all available product categories with counts and subcategories. Use this to understand what's in the index before searching, or to find the right category/subcategory slugs for filtered searches.

No parameter schema in public metadata yet.

search.alternativesFind alternatives to a specific product. Returns similar products in the same category, scored by relevance (subcategory match, price similarity, ratings). Use after 'details' when exploring options.2 params

Find alternatives to a specific product. Returns similar products in the same category, scored by relevance (subcategory match, price similarity, ratings). Use after 'details' when exploring options.

Parameters* required

max_resultsinteger

Maximum alternatives to return (default 5, max 10)default: 5

product_idinteger

Product ID to find alternatives for

search.feedbackReport an issue or suggest an improvement for Sylex Search. We actively use feedback to improve search quality and coverage. Use this when: results are irrelevant, a product is missing, data is wrong, or you have a suggestion. Every report helps.5 params

Report an issue or suggest an improvement for Sylex Search. We actively use feedback to improve search quality and coverage. Use this when: results are irrelevant, a product is missing, data is wrong, or you have a suggestion. Every report helps.

Parameters* required

actualstring

What you actually got (brief summary)

expectedstring

What you expected to find

feedback_typestring

Type of feedbackone of bad_results · missing_product · wrong_data · suggestion · other

messagestring

Free-form feedback message with details

querystring

The search query that produced bad results (if applicable)

manage.registerRegister a new product, service, or business in Sylex Search. Returns an owner_token — store it! You need it to update your listing later. Optionally include MCP connection config so other agents can discover and connect to your server.6 params

Register a new product, service, or business in Sylex Search. Returns an owner_token — store it! You need it to update your listing later. Optionally include MCP connection config so other agents can discover and connect to your server.

Parameters* required

categorystring

Category slug (use 'categories' tool to see options)

descriptionstring

What this product or business does (max 500 chars)

mcp_configobject

MCP connection config so other agents can connect. For SSE: {"transport": "sse", "url": "https://..."}. For stdio: {"transport": "stdio", "command": "npx", "args": ["pkg"]}. For streamable-http: {"...

namestring

Product or business name

subcategorystring

Subcategory slug (optional)

urlstring

Homepage or primary URL

manage.claimClaim ownership of an existing listing in Sylex Search, or recover access if you lost your owner_token. Two-step process: (1) Call with just product_id to get a verification code and instructions. (2) Place the code at a URL you control, then call again with product_id + verif...2 params

Claim ownership of an existing listing in Sylex Search, or recover access if you lost your owner_token. Two-step process: (1) Call with just product_id to get a verification code and instructions. (2) Place the code at a URL you control, then call again with product_id + verif...

Parameters* required

product_idinteger

Product ID to claim (from discover results)

verification_urlstring

URL where you placed the claim code. We'll fetch it and check for the code. Omit on first call to get the code and instructions.

manage.updateUpdate your listing in Sylex Search. Requires the owner_token you received from 'register' or 'claim'. Can update name, description, url, category, pricing, and any custom data fields.3 params

Update your listing in Sylex Search. Requires the owner_token you received from 'register' or 'claim'. Can update name, description, url, category, pricing, and any custom data fields.

Parameters* required

owner_tokenstring

Owner token from register/claim

product_idinteger

Product ID to update

updatesobject

Fields to update. Index fields: name, description, short_description, url, category, subcategory, price_model, has_free_tier. Any other keys go into the data blob (features, integrations, etc).

manage.list_mcpAdd or update MCP connection config on your listing so other agents can discover and connect to your MCP server. Requires owner_token. This is how you make your product auto-discoverable by other agents.3 params

Add or update MCP connection config on your listing so other agents can discover and connect to your MCP server. Requires owner_token. This is how you make your product auto-discoverable by other agents.

Parameters* required

mcp_configobject

MCP connection details. Include 'transport' (sse, stdio, or streamable-http) plus transport-specific fields. SSE: {"transport": "sse", "url": "https://your-server/sse"}. stdio: {"transport": "stdio...

owner_tokenstring

Owner token from register/claim

product_idinteger

Product ID to add MCP config to

Readme

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-search

Via npm (local stdio proxy)

npx sylex-search

Why 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.

View the full README on GitHub

Details

Repository: github.com/mastadoonprime/sylex-search
Category: Search & Web Crawling
Package: sylex-search
Transport: STDIO, SSE
Registry: MCP registry, active

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Sylex Search

Tools

Readme

Sylex Search — Universal Search for AI Agents

Connect

SSE (recommended)

Via Smithery

Via npm (local stdio proxy)

Why this exists

Details

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