Configuration

Every agent-kit sync invocation reads an optional agentKit block from the project root’s package.json. CLI flags (--target, --projects) still override at call time, but the config is the place to pin choices so contributors don’t have to remember them.

{
  "scripts": { "postinstall": "agent-kit sync" },
  "agentKit": {
    "targets": ["claude", "cursor"],
    "pick": {
      "@warlock.js/core": true,
      "@my-org/lib": ["only-this-skill"]
    },
    "omit": {
      "@some-vendor/sdk": true,
      "@warlock.js/core": ["add-connector"]
    },
    "monorepo": {
      "projects": ["backend", "frontend"]
    }
  }
}

Malformed sub-fields are silently dropped — a typo in one entry never blocks the whole sync.

targets

Default skill-sync targets when the CLI omits --target. Valid values: claude, copilot, cursor, codex, opencode, amp, goose, kiro, antigravity.

{ "agentKit": { "targets": ["claude", "cursor"] } }

Resolution order: --target flag → agentKit.targets → built-in default (["claude"]). An explicit empty array ("targets": []) is honored but warns — it syncs zero targets, almost always a mistake.

agent-kit init seeds this field for you so you never have to discover the syntax by hand: it writes "targets": ["claude"] (the built-in default, made explicit) when none exists, or whatever you pass to init --target a,b. An already-set targets is left untouched unless you pass --target. See CLI usage.

targets gates only the skills export. The derive step always emits CLAUDE.md, .gemini/GEMINI.md, .github/copilot-instructions.md, and CONVENTIONS.md regardless.

pick — allowlist

When pick is set, only the listed packages are synced; everything else is dropped. Keys are exact package names.

• true → include the whole package’s skills.
• string[] → include only the named skills (by their source folder name).

{ "agentKit": { "pick": { "@warlock.js/core": true, "@mongez/agent-kit": ["overview"] } } }

An empty "pick": {} means “include nothing” (it warns). A pick whose entries are all malformed is treated as unset.

omit — denylist

Drop packages or specific skills. Keys are exact package names.

• true → omit the entire package.
• string[] → omit specific skills by source folder name; other skills from the package still sync.

{ "agentKit": { "omit": { "@some-vendor/sdk": true, "@warlock.js/core": ["add-connector", "send-response"] } } }

How pick and omit compose

pick runs first (allowlist the packages), then omit runs over what survived (trim specific skills). So you can say “include @warlock.js/core but skip its noisy add-connector skill” in one block:

{
  "agentKit": {
    "pick": { "@warlock.js/core": true },
    "omit": { "@warlock.js/core": ["add-connector"] }
  }
}

monorepo.projects

A list of sibling project directories to aggregate into this (root) project’s skill dirs, so one session opened at the repo root sees skills from every project. Each entry is a path relative to the root (or absolute) and may be a one-level glob (apps/*).

{ "agentKit": { "monorepo": { "projects": ["backend", "frontend"] } } }

Each listed project is scanned as its own project:

• Its node_modules/ dependency skills are filtered by that project’s own agentKit.pick/omit (read from the project’s package.json).
• Its authored skills/ folder is exported with the project directory name as the slug prefix (backend/skills/code-standards → backend-code-standards).

Two precedence rules to know:

• Shared dependencies dedupe to one copy. If two projects depend on the same package, its skills are exported once (the union of what each project kept) — skill content is the same documentation regardless of which project pulled it in.
• The root’s omit is a global veto. After aggregation, the root package.json’s omit is applied across everything, so the root can ban a dependency repo-wide even if a project kept it.

A project’s own targets and monorepo are ignored during aggregation — only its pick/omit shape what it contributes, and aggregation never recurses into a project’s own monorepo.projects. The CLI equivalent is --projects backend,frontend; see CLI usage and the dedicated Monorepos page.