What is Model Context Protocol (MCP)?
Verified 5 August 2026
Before MCP, every tool integration was bespoke per model and per framework. MCP standardises tool discovery and invocation over JSON-RPC, so one server works with any client that speaks the protocol.
For a search API this means one implementation reaches Claude Code, Claude Desktop, Cursor, ChatGPT and anything else that adopts it — and the user configures it once.
unlob exposes eleven tools over MCP, including all six coverage-graph operations.
How unlob handles this: MCP server
Common questions
What is Model Context Protocol (MCP)?
MCP is an open protocol for exposing tools and data sources to AI models through a uniform interface, so any compatible client can use any compatible server.
How does Model Context Protocol (MCP) work in practice?
For a search API this means one implementation reaches Claude Code, Claude Desktop, Cursor, ChatGPT and anything else that adopts it — and the user configures it once.
See it working
The free tier is 10,000 requests a month with no card — enough to test any of this against your own queries.