MCP and Computer Use

Anthropic's two complementary connector mechanisms: MCP for structured programmatic access (Salesforce/Drive/Gmail/Slack/Figma + niche industry systems); computer use as the GUI-driving catchall when no MCP exists; Boris Cherny's "to the model, it's just tokens" — plus the vault's dated ledger of the MCP wire protocol itself, now at revision 2026-07-28: sessions and the initialize handshake removed, per-request version negotiation in _meta, a mandatory server/discover RPC, MRTR replacing all server-initiated requests, required ttlMs/cacheScope caching fields, and a feature-lifecycle policy with a 12-month deprecation window and a deprecated-features registry (Roots/Sampling/Logging, HTTP+SSE, OAuth DCR→Client ID Metadata Documents)