feat(mcp): Mode B Spec 520 embedded MCP host CLI - #1354
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Prepare public registry refs into a host-owned verified cache, then serve MCP from that cache without an expedition checkout or materialize rewrite. Co-authored-by: Cursor <cursoragent@cursor.com>
Raise traverse-mcp line coverage back above the 98% gate after the new host CLI. Co-authored-by: Cursor <cursoragent@cursor.com>
enricopiovesan
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claude/issue-1242-mode-b-embedded-mcp-host
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September 12, 2026 02:27
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Summary
traverse-mcp prepare-cacheto prepare a Spec 520 / Spec 080 host-owned verified cache from publicregistry_refvalues (--synced-state,--cache, repeatable--ref).traverse-mcp stdio --cache <dir>so App-Refs Mode B can point at the shipped host withoutregistry materializeor an expedition checkout.scripts/ci/mcp_stdio_server_mode_b_smoke.sh(prepare fixture cache → stdio execute one digest-pinned capability → fail-closed unprepared cache).Closes #1242
Governing Spec
080-embedded-registry-cache119-verified-registry-mcp-mode-a086-mode-a-registry-mcp004-spec-alignment-gate065-sigstore-bundle-verificationProject Item
What Changed
traverse-mcphost CLI.--cacheserve flag.Validation
cargo test -p traverse-mcp --libcargo test -p traverse-mcp --bin traverse-mcpcargo clippy -p traverse-mcp --all-targets -- -D warningsbash scripts/ci/mcp_stdio_server_mode_b_smoke.shscripts/ci/local_preflight.sh --pr-body)