- New agent-plugins provider discovers packages with a root plugin.json
targeting the canonical schema (agent-plugins.org) from marketplace
installs, --plugin-dir, and configured extension roots; skills/ and
mcp.json load per spec with closed-schema validation,
${PLUGIN_ROOT}/${PLUGIN_DATA} expansion, reserved subprocess
environment, instance-keyed data dirs, and per-component isolation.
- Package-boundary containment (spec §4.1) is enforced before every
read via the new contained-path helpers, including skill:// resource
access from the read tool and bash; plugin skill files must
realpath-resolve inside the plugin root (skills carry containRoot).
- Legacy claude-plugins/omp-plugins providers yield skills and MCP
surfaces of standard-targeting roots to the new provider and skip
fatally invalid packages.
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