Invoke an MCP tool through the compact projection surface.

Use ref.server and ref.name with canonical upstream identifiers. Use mode="validate" to inspect input requirements before calling.

Available tool families:

Example: invoke(ref={"server": "notes", "name": "echo_note"}, arguments={"title": "...", "body": "..."})

Read MCP resources through the compact projection surface.

Use ref.server with either ref.uri for direct resources or ref.uriTemplate plus template arguments for resource templates. Use mode="preview" before reading when you need metadata first.

Direct resources:

• none

Resource templates:

• none

Example: read(ref={"server": "notes", "uriTemplate": "memo://notes/{slug}", "arguments": {"slug": "welcome"}}, mode="read")