Document fx MCP setup

[masnwilliams]

Summary

• add fx to the MCP client navigation
• document kernel mcp install --target fx
• document manual Streamable HTTP and OAuth setup in ~/.fx/mcp.json
• add fx to the CLI target reference

Testing

• rendered the fx MCP page with Mintlify locally
• validated docs.json as JSON
• ran git diff --check

[mintlify]

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Project	Status	Preview	Updated (UTC)
Kernel	🟢 Ready	View Preview	Aug 23, 2026, 9:12 PM

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[cursor]

Risk assessment: Very Low

Decision: Previous approval stands (no re-approval)

Re-evaluated after the new commit (f08ca2c, Document fx CLI setup). The update only adds more Mintlify documentation:

• reference/cli/mcp.mdx: add fx as a kernel mcp install target, example, and HTTP transport note
• reference/mcp-server/clients/fx.mdx: add a CLI install section and split connect/auth commands

The full PR remains documentation-only (4 files, +51/−2):

• New fx MCP client page
• One docs.json nav entry
• One mention on the MCP overview card
• CLI target reference updates

Why Very Low (unchanged)

• Docs-only; no application, auth, billing, or infrastructure code
• Small, isolated surface with no production logic or shared-system changes
• No CODEOWNERS file in this repo, so no required owner review
• Incremental change after the prior approval does not increase blast radius or risk

Prior approval remains in effect. Not re-approving.

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