Glossary · term41 of 202
client capabilities field
A metadata block listing what optional features a client supports, which MCP servers are explicitly forbidden from caching between requests.
also written as clientCapabilities
Related terms
client info fieldA metadata block carrying a client's name and version string, sent once at handshake under the old MCP spec and repeated on every call under the new one.view termprotocol version fieldA value identifying which revision of the MCP spec a client speaks, negotiated once at startup under the old handshake and now restated on every request.view term
At a glance
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