Ecosystem Update

Ecosystem Update

Scan configured sources for new patterns, diff against the current setup, implement Quick Wins, and write a dated report.

Default (loop-safe): /ecosystem-update — backs up, implements Quick Wins, writes report Report only: /ecosystem-update --dry-run — fetches and scores but makes no changes

Output: ${config.paths.report_dir}/YYYY-MM-DD.md

The skill is headless-safe: no interactive prompts, deterministic exit, idempotent on same-day reruns.

---

Step 0 — Load Config

Read the skill's local config first:

1. ${SKILL_DIR}/sources.yaml — the URLs to scan, organized into tiers
2. ${SKILL_DIR}/config.yaml — paths, scoring weights, hard limits

If sources.yaml doesn't exist, fall back to sources.example.yaml and warn the user once. If config.yaml doesn't exist, fall back to config.example.yaml.

${SKILL_DIR} is the directory this SKILL.md lives in (typically ~/.claude/skills/ecosystem-update/).

---

Step 1 — Read Current State

Before fetching anything external, snapshot the current config so you can diff against it.

The exact files to read are configured in config.yaml::current_state_files. Defaults:

1. ~/.claude/CLAUDE.md — constitutional policy
2. ~/.claude/settings.json — hooks, permissions, MCPs, plugins
3. Glob ~/.claude/agents/*.md — agent frontmatter (name, tools, model, isolation)
4. Glob ~/.claude/skills/*/SKILL.md — installed skill names + descriptions
5. Read ${config.paths.state_file} — the seen_items array contains identifiers of previously reported items; skip any candidate whose identifier appears here

If a configured memory MCP is available (claude-mem, omni-mem, etc.), additionally search it for prior ecosystem-update seen observations as a secondary dedup signal.

Build an internal "already have" list dynamically from these reads. Do not hardcode specific items — derive from current file state.

---

Step 2 — Fetch Sources

Iterate over sources.yaml tiers. Run WebSearch and WebFetch in parallel where possible.

Tier 1 — Always fetch

For each entry in tier_1_daily, fetch the URL and extract per the entry's extract description.

Tier 2 — Daily, but skippable

Skip the entire tier if state_file.tier2_last_run is within the last 24 hours.

Tier 3 — Weekly

Skip the entire tier if state_file.tier3_last_run is within the last 7 days.

Custom tiers (tier_4_monthly, tier_5_quarterly, etc.) declared in sources.yaml follow the same skip-window pattern, with windows defined in the source entry.

WebSearch supplements

If a source entry includes a websearch_supplement query, run that query in parallel with the main fetch. Use the search results as an additional candidate stream for that source.

---

Step 3 — Extract Candidates

For each source, extract discrete items. Each candidate must have:

• Title — short name
• Source — URL or repo
• Type — one of the types declared in config.yaml::candidate_types (defaults: hook, agent-pattern, skill, claude-md, mcp, research)
• Description — what it does, one sentence
• Slug — kebab-case version of the title for dedup (e.g. permission-request-hook)

The candidate types and their detection criteria are configurable. Default detection logic:

Hooks: New hook events not in settings.json (e.g. PostCompact, PermissionRequest, once: true modifiers, type: prompt hooks, statusMessage, shell output injection via !command). Diff against current settings.json hook events.

Agent patterns: isolation: worktree, context: fork, allowed-tools wildcards, argument-hint, per-agent model overrides, tool restriction patterns. Diff against current agents/*.md frontmatter.

Skills: Domain-specific skills worth adapting. Diff against skills/ directory listing.

CLAUDE.md patterns: @import for modular rules, keyword-routing tables, instinct scoring, prune/dream cycles. Diff against current CLAUDE.md.

MCP servers: New MCP integrations with clear utility. Diff against settings.json::mcpServers.

Research: Papers with directly applicable patterns. Only include if directly applicable to the current setup (per the philosophy gate at Step 5).

To customize detection for a non-Claude ecosystem, override these in config.yaml::candidate_types.

---

Step 4 — Diff and Classify

For each candidate, assign one bucket:

• HAVE — already implemented (skip; add to Already Have list in the report)
• PARTIAL — partially implemented, gap exists (include with gap description)
• MISSING — not in current setup
• CONFLICTS — contradicts an existing rule (note conflict, do not recommend)

Compare dynamically against what was read in Step 1. Do not rely on hardcoded lists — the config changes over time and hardcoded entries go stale.

---

Step 5 — Score Candidates

Score each MISSING or PARTIAL candidate:

Impact   (1–3): 1=minor convenience, 2=meaningful improvement, 3=significant capability gain
Effort   (1–3): 1=one-liner or frontmatter change, 2=new module  "Can I prove in one sentence that an existing primitive cannot satisfy this requirement?"

If the answer is "no" or requires more than one sentence → reject as overengineering. The single-sentence justification goes into the report's `Why` column.

This gate is the difference between a useful daily report and a noise generator. Keep it on unless you have a specific reason to disable.

---

## Step 6 — Write Report

Output file: `${config.paths.report_dir}/YYYY-MM-DD.md`

If the file already exists (same-day rerun), overwrite it.

```markdown
# Ecosystem Update — YYYY-MM-DD

## TL;DR
- {most important finding, one line}
- {second}
- {third}

## Quick Wins
| Item | Source | Type | Impact | Effort | Why | Action |
|------|--------|------|--------|--------|-----|--------|
| ... | ... | hook | 3 | 1 | one-sentence justification | Add PermissionRequest hook to settings.json |

## Build Queue
- **{Item}** ({type}) — {source} — {what it does and why it's worth building}

## Research
- [{Title}]({URL}) — {one-line relevance to current setup}

## Already Have
{comma-separated list of items previously implemented — no need to revisit}

## Rejected
- {Item} — {reason: overengineered / already covered by X / alignment failure}

## Auto-Implemented (this run)
- {Item} — {file changed} — {one-line summary}

---
_Sources checked: {URLs}_
_Tier 2 fetched: {yes/no}_
_Tier 3 fetched: {yes/no}_
_Run at: {ISO timestamp}_

---

Step 7 — Save State

Update ${config.paths.state_file} (default ~/.claude/state/ecosystem-update-last-run.json):

{
  "last_run": "{ISO timestamp}",
  "tier2_last_run": "{ISO timestamp, only update if tier 2 was fetched this run}",
  "tier3_last_run": "{ISO timestamp, only update if tier 3 was fetched this run}",
  "items_seen_count": {total count},
  "seen_items": ["{item-slug}", ...]
}

The seen_items array is the primary dedup mechanism. Each entry is the kebab-case slug of an item title. On the next run, any candidate whose slug matches an entry is bucketed as HAVE and skipped silently.

If a memory MCP is configured (config.yaml::memory_mcp), additionally save a type: reference observation summarizing this run's Quick Wins. This is secondary — the state file is the source of truth.

---

Step 8 — Implement Quick Wins (default; skip if --dry-run)

Unless --dry-run was passed AND config.yaml::implement_quick_wins is true (default), implement all Quick Wins automatically.

Before any changes — backup

mkdir -p ${config.paths.backup_dir}/YYYY-MM-DD
# Copy every file the Quick Wins target, into the dated backup directory.

The exact files backed up are derived from each Quick Win's Action column.

For each Quick Win

1. Read the target file first
2. Apply the change using your editor tool of choice
3. Verify the file is syntactically valid after the edit (parse JSON / YAML / TOML; for markdown, just check it round-trips)
4. Add an entry to the report's Auto-Implemented section with the file path and one-line summary

Hard limits — config.yaml::hard_limits

The defaults in config.example.yaml:

• never_touch — list of files the auto-implement step must never modify (default includes ~/.claude/CLAUDE.md)
• forbid_new_files: true — auto-implement never creates new files; those go to the Build Queue instead
• forbid_body_rewrites: true — only frontmatter additions allowed; never rewrite agent or skill bodies
• forbid_new_hooks_without_script: true — never add a hook to settings.json that points to a script file that doesn't exist yet

These limits are enforced regardless of scoring. A Quick Win that would violate a hard limit is downgraded to Build Queue.

---

Step 9 — Notify (optional)

If config.yaml::notify_on_complete is set, run the configured notification command. Defaults to no-op.

Example:

notify_on_complete: "bash ~/.claude/bin/notify_done.sh --status success --task ecosystem-update --channel desktop"

---

Scheduling

Cron at 8am:

0 8 * * * cd ~/.claude && claude --print "/ecosystem-update" >> ~/.claude/logs/ecosystem-update.log 2>&1

Or via the Claude Code scheduler if available:

/schedule daily 8am /ecosystem-update

---

Source Reference (default sources.yaml example)

If you cloned the repo, sources.example.yaml already contains the same Claude-Code-ecosystem sources the original was built against. Copy it to sources.yaml and trim/extend.

For other ecosystems, see the pre-built configs in examples/:

• ai-engineering.yaml
• security-advisories.yaml
• web-framework.yaml

---

Customization Surface — TL;DR

When you want to use this skill for a different ecosystem:

1. Replace sources.yaml — different URLs, different extract descriptions
2. Override candidate_types in config.yaml if your ecosystem has different "things you might add" (e.g. for security: cve, advisory, mitigation; for a web framework: rfc, release, pattern)
3. Adjust hard limits to match your codebase (e.g. never_touch: [package.json] if your build is fragile)
4. Adjust scoring thresholds to taste

You should not need to edit this SKILL.md. If you find yourself wanting to, that's a sign the skill needs another config knob — open an issue or PR.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: Chaddacus
• Source: Chaddacus/ecosystem-update
• License: MIT

Install and usage instructions live in the source repository linked above.