Glossary
What is Model Context Protocol (MCP)?
Verified 21 September 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 its tools over MCP — ground and get_document on the grounding profile, every tool including all six coverage-graph operations on the default.
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 credits a month with no card — enough to test any of this against your own queries.