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Separate MCP sandbox policy from launcher metadata - #53709
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## Why MCP servers must forward sandbox policy unchanged to `codex sandbox --sandbox-state-json`, while interpreting launcher information to find the Codex CLI. Keep those contracts separate so consumers can preserve unknown policy fields. ## What changed - Accept the experimental `codex/sandbox-state` capability alongside the deprecated `codex/sandbox-state-meta` capability, and send identical policy values under both `_meta` keys. - Move `codexExecutable` out of the policy into `codex/sandbox-launcher`, supplied only when a verified CLI path is available for a local stdio server. - Replace stale sandbox metadata while retaining unrelated entries, and remove stale launcher metadata when no launcher is available. - Document the metadata contract and how servers should forward policy and retain authority for long-lived subprocesses. ## Testing Update unit and integration coverage for policy serialization, identical state aliases, launcher availability across execution environments, and stale metadata replacement. GitOrigin-RevId: e544c06e6e023953b1fc8069b7b1affa065262d1
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Separate MCP sandbox policy from launcher metadata
Why
MCP servers must forward sandbox policy unchanged to
codex sandbox --sandbox-state-json, while interpreting launcher information to find the Codex CLI. Keep those contracts separate so consumers can preserve unknown policy fields.What changed
codex/sandbox-statecapability alongside the deprecatedcodex/sandbox-state-metacapability, and send identical policy values under both_metakeys.codexExecutableout of the policy intocodex/sandbox-launcher, supplied only when a verified CLI path is available for a local stdio server.Testing
Update unit and integration coverage for policy serialization, identical state aliases, launcher availability across execution environments, and stale metadata replacement.