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Skillsanalyze-plugin

analyze-plugin

Agents & models

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Updated 10-15 20:13

About this skill

Analyze Plugin (PLAN-ONLY)

Lisa curates a small set of third-party Claude plugins in enabledPlugins (.claude/settings.json at the repo root and all/merge/.claude/settings.json):

lisa@lisa, safety-net@cc-marketplace, code-simplifier@claude-plugins-official,
code-review@claude-plugins-official, coderabbit@claude-plugins-official,
skill-creator@claude-plugins-official

(sentry@claude-plugins-official was curated until issue #1955: the base lisa plugin bundles the Sentry MCP server for every agent, so the upstream plugin was retired — its enabledPlugins entry is now pinned false — and Lisa's parity skills own the Sentry workflows.)

(+ typescript-lsp@claude-plugins-official in stack settings.) These reach Claude — and Cursor, which reads .claude-plugin/ natively — but not Codex / agy / Copilot. This skill analyzes one curated plugin and produces a parity plan: what each component is, and how each agent should obtain equivalent behavior.

This skill is plan-only. It writes a routing artifact and a human matrix and then STOPS. It does not emit MCP, scaffold skills, run generators, or edit any source. If asked to "implement", "apply", or "build" the parity, reject the request and point at the sibling skill implement-plugin-parity — analysis and execution are deliberately separated by a human approval gate (mirroring how lisa-coding-agent-parity refuses implementation and points at its sibling).

Input

One curated plugin's canonical id: <name>@<marketplace> — e.g. code-simplifier@claude-plugins-official. This is byte-identical to the enabledPlugins key and to the cache path <marketplace>/<name>/.

Procedure

1. Locate the installed plugin

Find the plugin tree in the cache (no network):

~/.claude/plugins/cache/<marketplace>/<name>/<version>/

Resolve the current upstream version the same way the drift detector does — read each version subdir's .claude-plugin/plugin.json version field and take the max valid semver. Record it as upstreamVersion.

Version fallback (real plugins are messy — handle all three cases):

  1. A .claude-plugin/plugin.json with a valid-semver version exists → use the max across subdirs (the normal path).
  2. No plugin.json, or it has no version field, but the version subdir name itself is valid semver (e.g. typescript-lsp/1.0.0/ with only a README) → record that directory name as upstreamVersion and note the source in the relevant component notes ("version from cache dir name; no plugin.json").
  3. Neither a semver version nor a semver subdir name exists (e.g. subdirs named unknown or a git hash, as with code-review and skill-creator) → record upstreamVersion: "unknown".

Drift-trackability consequence (state this in any reimplement rationale): the plugin-parity-drift detector only parses semver pins, so a plugin whose upstreamVersion is "unknown" cannot be drift-tracked if reimplemented — its synced-from stamp would be unparseable. For such a plugin, prefer a non-reimplement outcome where one applies; if reimplement is unavoidable, the actions MUST flag "upstream publishes no semver → not drift-trackable; pin/version needs manual review" rather than silently emitting an unparseable pin.

2. Inventory the components

Walk the plugin tree and inventory every component. Each entry records its kind, an id, the path within the plugin, a classification, and free-form notes:

  • kind: skill | agent | command | hook | mcp | lsp
  • classification: claude-skill | claude-agent | claude-command | hook | mcp-server | lsp-server

Look for: skills/*/SKILL.md, agents/*.md, commands/*.md, a hooks block in .claude-plugin/plugin.json (or hooks/hooks.json), .mcp.json (MCP servers), and any LSP declaration.

When the tree carries no machine-readable manifest (e.g. typescript-lsp ships only LICENSE + README.md), infer the component from the README prose and record it with notes: "inferred from README; no machine-readable manifest". Do not invent components the README doesn't describe.

Dedupe MCP declarations. The same MCP server is often declared in more than one place (.mcp.json, an inline mcpServers block in plugin.json, and/or a root mcp.json). Count one logical mcp component per distinct server, not one per declaration.

3. Decide a per-agent routing outcome

Produce exactly one routing entry per non-Claude-native agent: codex, cursor, agy, copilot. Each entry has an outcome from the locked enum, a list of declarative actions, and a rationale.

Outcome enum (locked):

  • already-native — the agent already gets the behavior via the existing per-agent fan-out; no action.
  • re-point-mcp-lsp — the component is (or carries) an MCP/LSP server; emit it into that agent's variant via the existing generator/installer (Codex .codex-plugin MCP pointer; Cursor mcp.json; agy → src/agy/mcp-installer.ts user-global; Copilot → inline mcpServers / lspServers on the manifest).
  • enable-vendor-equivalent — enable the agent's native equivalent capability in its project-scoped marketplace.
  • claude-only — intentionally not ported (e.g. Cursor already covers it via native .claude-plugin/ loading, or there is no equivalent). Documented, no action.
  • reimplement — scaffold a Lisa-native skill stamped synced-from: <name>@<marketplace>@<upstreamVersion>. This is the only outcome that creates a drift-tracked artifact. v1 plans the scaffold only — the actual reimplementation logic is out of scope per the issue.

Decision rule (locked preference order): for each (plugin × agent) cell, choose the first applicable outcome in this order:

already-native  >  re-point-mcp-lsp  >  enable-vendor-equivalent  >  claude-only  >  reimplement

reimplement is the last resort: every reimplementation signs Lisa up to track another vendor's release cadence (a standing drift liability surfaced by plugin-parity-drift). Prefer any earlier outcome that reaches parity without forking — only reimplement when no native fan-out, MCP/LSP re-point, vendor equivalent, or accepted Claude-only coverage applies.

Routing heuristics:

  • An MCP/LSP-bearing plugin → re-point-mcp-lsp for Codex/agy/Copilot; Cursor is usually already-native (its variant emits mcp.json from .mcp.json).
  • A pure subagent/skill/command with no MCP → reimplement for Codex and agy (Lisa's curated third-party plugins are not in the per-agent fan-out — that fan-out carries Lisa's own plugins, not these — so Codex/agy receive nothing natively), claude-only for Cursor (loads the .claude-plugin/ natively), and enable-vendor-equivalent for Copilot when the vendor ships a comparable capability. (The schema example's older "agy converts commands to skills" rationale referred to agy's plugin system in general; it does not apply here because the third-party plugin is never installed into agy.)
  • A hook-bearing plugin (e.g. a PreToolUse guard like safety-net) → there is no MCP/LSP re-point and no "skill" equivalent, so reimplement for Codex/agy means scaffold a Lisa-native hook (fanned out via the existing per-agent hook generators from #1054–#1058), not a skill — say so explicitly in actions. claude-only for Cursor; for Copilot, enable-vendor-equivalent when the plugin ships a native Copilot hook runner, else reimplement.
  • Note any first-of-its-kind emission path (e.g. the first LSP routed to Copilot lspServers) in actions as a flagged follow-up rather than assuming the generator already handles it.

enable-vendor-equivalent test (don't over-claim it): use it only when the target agent ships, or its marketplace publishes, a concrete equivalent — name it in actions. A branded third-party tool (e.g. CodeRabbit) counts only if that vendor actually publishes a plugin/integration for the target agent; a generic capability the agent already has natively (e.g. Copilot's built-in code review or simplify) also counts. If neither holds, fall through to claude-only or reimplement — never assert a vendor equivalent you cannot name.

Multi-component plugins — cover every component, drop nothing (the key rule). Some plugins span several component kinds at once (e.g. sentry = one MCP server plus ~30 SDK skills plus a command). The per-agent outcome stays a single value — the dominant component's outcome per the preference order (so a plugin that is fundamentally an MCP server is re-point-mcp-lsp). But the per-agent actions array MUST carry one action line for every component group, including the ones the dominant outcome doesn't cover. For sentry/codex that means BOTH "re-point the sentry MCP" AND "reimplement (or claude-only) the 30 SDK skills" — the skills must not be silently dropped behind the MCP outcome. If a residual component group has no parity path, say so in actions as a flagged gap. A reviewer reading the artifact must be able to see that no component went uncovered.

4. Write the artifact + matrix, then STOP

Write two paired files (the full <name>@<marketplace> id keeps one artifact per plugin so re-running never clobbers another):

  • parity/plugin-routing/<name>@<marketplace>.json — the machine-readable routing artifact, "status": "proposed".
  • parity/plugin-routing/<name>@<marketplace>.md — a human review matrix (a markdown table of components and per-agent routing).

Then STOP and tell the human to review the artifact and flip "status": "proposed" → "approved" (a one-line edit, visible in the git diff) before running implement-plugin-parity.

Routing artifact schema

{
  "schemaVersion": 1,
  "plugin": "code-simplifier@claude-plugins-official", // canonical id (== synced-from plugin-ref)
  "pluginName": "code-simplifier",
  "marketplace": "claude-plugins-official",
  "upstreamVersion": "1.0.0",          // max semver from the cache, the semver dir name, or "unknown" (see Version fallback)
  "analyzedAt": "2026-05-30",          // informational only (not load-bearing)
  "status": "proposed",                // "proposed" | "approved" (human flips to approved)
  "components": [
    {
      "kind": "agent",
      "id": "code-simplifier",
      "path": "agents/code-simplifier.md",
      "classification": "claude-agent",
      "notes": "single subagent; no MCP/LSP"
    }
  ],
  "routing": {
    "codex":   { "outcome": "reimplement",             "actions": ["scaffold Lisa-native skill stamped synced-from: code-simplifier@claude-plugins-official@1.0.0"], "rationale": "Codex has no plugin subagent surface; behavior reimplemented as a Lisa skill." },
    "cursor":  { "outcome": "claude-only",             "actions": [],                                                                                                  "rationale": "Cursor reads .claude-plugin/ natively; the agent loads unchanged." },
    "agy":     { "outcome": "reimplement",             "actions": ["scaffold Lisa-native skill stamped synced-from: code-simplifier@claude-plugins-official@1.0.0"], "rationale": "Curated third-party plugins are not in agy's fan-out, so agy receives nothing natively; reimplement as a Lisa skill." },
    "copilot": { "outcome": "enable-vendor-equivalent","actions": ["enable copilot's native simplifier equivalent in the project-scoped marketplace"],                "rationale": "vendor ships a comparable capability; prefer enabling over reimplementing." }
  }
}

The human matrix .md presents the same components + routing as readable tables so a reviewer can approve without parsing JSON.

actions templates (use these exact shapes — do not deviate)

Drift-trackable reimplement (upstream has semver): one action, with the pin — "scaffold Lisa-native skill stamped synced-from: <name>@<marketplace>@<semver>".

Non-drift-trackable reimplement (upstreamVersion: "unknown"): never write synced-from: ...@unknown — that pin is unparseable by plugin-parity-drift. Instead emit exactly — "scaffold Lisa-native skill (NO synced-from pin: upstream publishes no semver, so it is not drift-trackable — record drift-tracking as manual review)".

Multi-component plugin (e.g. sentry = mcp + command + 30 skills): the per-agent actions array carries one real coverage action per component group — and for a group that has a parity path you write that path, you do not write a "not addressed" flag. A flag is reserved ONLY for a group with genuinely no path. Worked example — sentry/codex:

"actions": [
  "emit the sentry HTTP MCP into Codex's .codex-plugin MCP pointer",
  "reimplement the 30 SDK skills as Lisa-native skills stamped synced-from: sentry@claude-plugins-official@<semver> (or claude-only where a skill is Claude-specific)",
  "reimplement the seer command as a Lisa-native skill stamped synced-from: sentry@claude-plugins-official@<semver>"
]

Every component group appears; nothing is left as "NOT addressed."

Constraints

  • Plan-only. No source edits, no generator runs, no MCP emission, no skill scaffolding. The only writes are the two parity/plugin-routing/ files.
  • The artifact is a durable, committed contract between this skill and implement-plugin-parity — it must survive across sessions, machines, and reviewers (hence parity/, not /tmp).
  • An MCP-only plugin (no reimplement outcome) produces no synced-from skill and therefore never appears in the drift report — drift tracking is scoped exactly to reimplementations.

Definition of done

  • parity/plugin-routing/<name>@<marketplace>.json exists, validates against the schema above, is status:"proposed", and has exactly one routing entry per agent (codex/cursor/agy/copilot).
  • upstreamVersion is resolved by the Version-fallback rules (semver, semver dir name, or "unknown"), and any reimplement of an "unknown"-version plugin flags the not-drift-trackable consequence.
  • Every component the plugin actually ships is represented, and for each agent the actions cover every component group (multi-component plugins drop nothing).
  • The sibling .md matrix is written.
  • No source-tree edits were made.
  • node scripts/plugin-routing-validate.mjs exits 0 — run it before the artifact is considered done. It re-checks the schema, the per-agent routing coverage, the version contract against the live cache, and the anti-pattern gates (no @unknown pin, no "not addressed" cop-out, reimplement carries its synced-from stamp). A non-zero exit means the artifact is not done.
  • The skill STOPPED with the approval instruction.