SkillOpt

Multi-skill staging and reviewed adoption

Multi-skill nights separate learning from promotion. The cycle can consolidate several hinted skills from their own live documents, but it never treats that fan-out as permission to update every live file.

There are two independent proposal modes, and one night can contain both:

  1. Managed (legacy) proposal — the aggregate cycle may stage proposed_SKILL.md and proposed_CLAUDE.md for the configured managed skill and project memory.
  2. Per-skill fan-out — accepted hinted groups may stage one proposed_SKILL.<name>.md each. A reviewer chooses an explicit subset.

auto_adopt applies only an accepted managed proposal. It never promotes the per-skill fan-out. Pending per-skill names remain visible after a managed auto-adoption.

This feature landed after PyPI 0.2.0. Install from main until the next release.

How the nightly fan-out works

Set the canonical multi_skill_fanout option to true. The earlier multi_skill_report name remains a compatibility alias. When mined evidence contains explicit skill hints, the cycle:

  1. groups tasks by normalized hint;
  2. resolves each name inside existing project-native .agents/skills, .claude/skills, .cursor/skills, and .devin/skills directories, the established Claude roots, and any repeatable --skill-root PATH overrides;
  3. reads that skill’s exact live SKILL.md bytes and canonical path;
  4. runs the configured dream/consolidation pipeline independently for the group; and
  5. stages a row only when that group’s own gate accepted a non-empty update.

Missing, ambiguous, unreadable, aliased, unsafe, or colliding skills are skipped with a note in both report formats. They never fall back to the managed skill’s document. The managed catch-all remains on proposed_SKILL.md and is not duplicated as a per-skill row.

Each group inherits recall_k, dream_rollouts, dream_factor, edit_budget, gate_mode, gate_metric, gate_mixed_weight, gate_no_regression, and evolve_skill. Recalled archive tasks are restricted to the same skill hint, and shared memory is read-only during group runs. Consequently, evolve_skill=false disables managed and fan-out skill proposals.

The aggregate consolidation still runs once. Each usable hinted group adds one independent dream/consolidation run, so provider calls and token use scale with the number of groups, tasks, and configured rollouts.

Staging layout

A mixed night can contain managed and per-skill artifacts together:

.skillopt-sleep/staging/20260815-013000/
├── manifest.json
├── proposed_SKILL.md
├── proposed_CLAUDE.md
├── proposed_SKILL.alpha.md
├── proposed_SKILL.beta.md
├── report.json
├── report.md
└── evidence.jsonl

manifest.json is a versioned, fail-closed format. It retains the old top-level field names only as safe compatibility sentinels and adds authoritative pinned proposal rows:

{
  "schema": "skillopt-sleep-staging",
  "schema_version": 2,
  "live_skill_path": "/repo/.agents/skills/managed/SKILL.md",
  "live_memory_path": "/repo/CLAUDE.md",
  "has_skill": false,
  "has_memory": false,
  "has_managed_skill": true,
  "has_managed_memory": true,
  "accepted": true,
  "legacy": {
    "skill": {
      "proposed_file": "proposed_SKILL.md",
      "live_path": "/repo/.agents/skills/managed/SKILL.md",
      "sha256": "<proposed raw-byte sha256>",
      "live_sha256": "<baseline raw-byte sha256>",
      "live_realpath": "/repo/.agents/skills/managed/SKILL.md"
    },
    "memory": {
      "proposed_file": "proposed_CLAUDE.md",
      "live_path": "/repo/CLAUDE.md",
      "sha256": "<proposed raw-byte sha256>",
      "live_sha256": "<baseline raw-byte sha256>",
      "live_realpath": "/repo/CLAUDE.md"
    }
  },
  "skills": [
    {
      "skill_name": "alpha",
      "proposed_file": "proposed_SKILL.alpha.md",
      "live_skill_path": "/home/dev/.claude/skills/alpha/SKILL.md",
      "sha256": "<proposed raw-byte sha256>",
      "live_sha256": "<baseline raw-byte sha256>",
      "live_realpath": "/home/dev/.claude/skills/alpha/SKILL.md"
    }
  ]
}

The top-level has_skill and has_memory compatibility fields are deliberately always false. This makes the pre-feature PyPI 0.2.0 adopter treat a new night as a no-op instead of bypassing the new validation and transaction engine. has_managed_skill and has_managed_memory describe managed proposal presence; the pinned legacy rows are authoritative for adoption. Top-level accepted describes only the aggregate managed gate and does not summarize skills. An aggregate gate may reject while an independently accepted group remains reviewable in skills.

sha256 pins the exact staged proposal bytes. live_sha256 pins the raw live bytes used as the consolidation baseline; an empty string means the file did not exist. live_realpath pins the canonical destination identity. Staging refuses publication if either live bytes or canonical identity changed after the baseline read.

The writer reserves each staging directory atomically, writes a complete artifact batch, and publishes its basename through a private mode-0600 .latest pointer. Invalid or symlinked pointers fall back only to contained, reserved nights; adoption cannot reorder nights by changing a directory mtime. Symlinked staging directories and manifests are ignored or refused.

Reviewing and adopting

python -m skillopt_sleep status --project PATH
python -m skillopt_sleep adopt --project PATH --staging NIGHT --skill alpha
python -m skillopt_sleep adopt --project PATH --staging NIGHT --skill alpha --skill beta
python -m skillopt_sleep adopt --project PATH --staging NIGHT --all-skills
python -m skillopt_sleep adopt --project PATH --staging NIGHT --legacy

Selection modes are mutually exclusive:

Use --skill=--leading-dash for a name beginning with -. Quote names with spaces or shell metacharacters according to the active shell. Human guidance lists names as data and never interpolates them into a copy/paste command.

The Python API uses the same transaction engine:

from skillopt_sleep.staging import (
    adopt_skills,
    latest_staging,
    pending_staged_skills,
)

night = latest_staging("/path/to/project")
names = [row["skill_name"] for row in pending_staged_skills(night)]
receipts = adopt_skills(night, ["alpha"])

skill_names=None adopts all per-skill rows. An empty sequence adopts nothing.

Integrity and recovery contract

Before any live mutation, adoption validates the entire relevant manifest and selected proposal set, including:

Old fan-out or managed manifests without live baseline pins are intentionally refused. Discard and rerun the night; adoption does not guess a baseline for an old proposal.

Adoption takes an exclusive staging lock plus stable per-target locks shared across separate nights. A stale lock fails closed instead of being guessed away. The locks cover manifest reload, full preflight, backup creation, final live revalidation, all live replacements, and receipt publication.

Before the first mutation, the engine fsyncs a private mode-0600 .adopt-transaction.json version-2 write-ahead journal containing the recovery state, including the identities of directories created by this transaction. Backups are created without replacement:

backup/skills/<name>/SKILL.md   # per-skill original
backup/SKILL.md                 # managed skill original
backup/CLAUDE.md                # managed memory original

Per-skill receipts accumulate in adopted_skills.json; managed receipts live in adopted_legacy.json. A skill or managed target cannot be re-adopted from the same night, and existing receipt/backup history must validate before another subset can be appended.

The engine revalidates the complete target set before and after receipt publication. The journal is removed only after every selected target and the receipt are durably published; that removal is the commit point. A caught failure triggers immediate rollback. If the process stops first, the next adoption recovers the journal before it trusts the manifest. Recovery restores only content still equal to this transaction’s proposal and removes only empty created directories whose identities still match the journal. If an external editor changed content or replaced a directory, recovery preserves it, retains the journal/backups, and raises StagingRecoveryError for manual resolution.

On POSIX, file and parent-directory changes are fsynced. Python’s standard library does not expose an equivalent portable directory flush on Windows, so the journal and file contents are flushed there but power-loss durability of directory entries remains filesystem/OS dependent.

The final byte/identity/mode check occurs immediately before atomic replacement, and all SkillOpt adoption processes share target locks. Portable Python does not provide a filesystem compare-and-swap against an unrelated process that ignores those locks; such a process can still race in the final check/replace micro-gap. Keep live skill editing and adoption coordinated when stronger OS-specific locking is required.

Machine interfaces and integrations

run --json includes additive skill_groups and staged_skills fields. status --json always includes staged_skills (an empty array on a malformed manifest) and adds staging_error when inspection failed. Adoption success and failure are single JSON documents; selection-required failures return available_skills as objects with skill_name and live_skill_path.

The Copilot and Devin MCP sleep_adopt tools expose staging, skills, all_skills, and legacy. They forward names as subprocess argument-vector elements, never shell text. The adapters validate actual JSON-RPC argument types before launching a subprocess, preserve nonzero engine status, and do not copy adopted content to a second unpinned destination. Native project skill roots are adopted directly through the core transaction.

Migration checklist

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