A Hub MCP endpoint lets an agent search, inspect, and call APIs without you wrapping REST for every listing. On Zyla API Hub that server is https://mcp.zylalabs.com/mcp. The catalog is more than 10,000 public APIs. You still subscribe per API (monthly or annual, with an included quota). There is no Free Plan. Your first Hub API includes a 7-day free trial (up to 50 requests, whichever comes first).
RapidAPI also ships MCP. The difference is what happens after the agent finds an API: Hub support intermediates with the provider, most listings are first-party, and APIs that fail quality monitoring are discontinued. Setup: zylalabs.com (Agents / MCP connect). Paste this URL into the client:
https://mcp.zylalabs.com/mcp?apikey=YOUR_KEY
Same secret as the REST Bearer token. You can also send Authorization: Bearer YOUR_KEY.
The eight MCP tools
The Hub MCP server documents eight JSON-RPC tools. Use them in this order when an agent needs a live listing:
search_catalog— keyword search across the public catalog.browse_catalog— paginated browse, with optional category and search.list_categories— Hub categories.get_api_info— one listing: endpoints, parameters, billing of that API’s plan.call_api— execute an endpoint on a listing you already subscribe to.register/account_status/get_payment_url— account, not catalog search.
Do not freeze a search_catalog hit list in this post — totals change. Ask the tool live. REST equivalent when you already know the listing id (Twitter Data All-in-One, Hub id 3399, Profile endpoint):
curl -H "Authorization: Bearer YOUR_API_KEY" \
"https://zylalabs.com/api/3399/twitter-data-all-in-one-api/3673/profile?screenname=elonmusk"
screenname is the only required query on that Profile endpoint. Same Hub key for the other endpoints on the listing — one subscription.
Where this is useful
- Internal copilot. The agent searches “routing number”, reads
get_api_info, thencall_apiinstead of you pasting curls into Slack. - New-hire onboarding. Point the MCP client at the Hub instead of a 40-page Postman dump.
- Vendor bake-off.
search_catalogthen compare plan text on the item page — still subscription plus quota, not pay-per-call.
Go live
1. Register — 7-day trial on the first Hub API (or 50 requests).
2. Copy the Hub API key.
3. Add https://mcp.zylalabs.com/mcp?apikey=YOUR_KEY to the MCP client.
4. Run search_catalog, then subscribe on the item page before call_api.
FAQ: Hub MCP
Is this pay-per-call?
No. Hub billing is a subscription plus quota per API. MCP call_api uses that same subscription.
Does RapidAPI already have MCP?
Yes. Do not pick Hub only because it has MCP. Pick it for first-party APIs, subscriber support, and quality monitoring.
