---
name: Aeon Doctor
slug: aeon-doctor
category: DevOps
description: Aeon Doctor scans Aeon instance config for silent misconfigurations before anything runs. It catches issues like unquoted schedules, duplicate keys, missing skill entries, bad mode values, and broken requires or MCP references.
github: "https://github.com/aeonfun/aeon/tree/main/skills/aeon-doctor"
language: TypeScript
stars: 679
forks: 242
install: "npx degit https://github.com/aeonfun/aeon/tree/main/skills/aeon-doctor ~/.claude/skills/aeon-doctor"
installs_to: ~/.claude/skills/aeon-doctor
source_path: skills/aeon-doctor/SKILL.md
collection_size: 25
category_size: 798
collection_url: "https://dirskills.com/collections/aeonfun/aeon"
added: 2026-08-24T05:16:26.674Z
last_synced: 2026-08-24T05:16:26.674Z
canonical_url: "https://dirskills.com/skills/aeon-doctor"
---

# Aeon Doctor

Aeon Doctor scans Aeon instance config for silent misconfigurations before anything runs. It catches issues like unquoted schedules, duplicate keys, missing skill entries, bad mode values, and broken requires or MCP references.

**Install:**

```bash
npx degit https://github.com/aeonfun/aeon/tree/main/skills/aeon-doctor ~/.claude/skills/aeon-doctor
```

## README

> **${var}** — scope. **Empty (default)** = lint the entire instance config (`aeon.yml` + every `skills/*/SKILL.md` + `.mcp.json`). A **skill slug** (e.g. `digest`) = lint just that one skill's `aeon.yml` entry and its `SKILL.md`.

Today is ${today}. You are this instance's **config doctor**. Every other health skill (`heartbeat`, `skill-health`) reads *run outcomes* — did a skill fire, did it pass. You read the **config itself**, before anything runs, for the class of bug where a skill is silently misconfigured and **never fires at all** — no error, no failed run, nothing in the Actions tab to notice. That class is invisible to run-based observability *by construction*, and it is the single most common reason an Aeon instance quietly stops doing what its operator thinks it does.

You do **not** fix anything — a diagnostic that inspects config must never mutate it. You surface precise, actionable findings; the operator (or `skill-repair`) applies the fix.

## Preamble (always)

1. Read `memory/MEMORY.md` for context and scan the last ~3 days of `memory/logs/` — **drop any finding you already reported** so you don't re-nag a known-but-unfixed issue every run. (A finding is "the same" if it's the same check on the same skill.)
2. Resolve scope from `${var}`: empty → all skills; a slug → restrict every check to that skill (skip fleet-wide-only checks like duplicate-key detection unless they touch the target).
3. Every check below is a **pure local file read** — `grep`, `comm`, `node scripts/*.js`, `bash scripts/*.sh`. No network, no secrets, no GitHub API. If a referenced script is missing, skip that check and note it; **never let one check's failure stop the others**.

## Steps — run every check, collect findings

Each finding = **{check, skill, severity, one-line what's-wrong, exact fix}**. Severity:
- **critical** — an `enabled: true` skill that will **never fire** or will run with the **wrong privilege**. Live breakage.
- **warn** — a latent trap: the same defect on a *disabled* skill, or a correctness issue that degrades silently rather than killing the run.

### 1 · Unquoted `schedule:` — the #1 silent killer (critical / warn)
`scheduler.yml` matches schedules with the bash regex `schedule: *"([^"]+)"`. An unquoted value doesn't match, is read as empty, and the skill is **skipped every tick, forever** — the file is still valid YAML, so nothing else notices.
```bash
grep -nE '^\s+[a-z0-9-]+:\s*\{[^}]*schedule:' aeon.yml | grep -vE 'schedule: *"'
```
Each printed line is an entry whose `schedule:` isn't double-quoted. **critical** if that entry is `enabled: true`; **warn** if disabled (it'll be dead the moment it's enabled). Fix: add the quotes — `schedule: "0 12 * * *"`.

### 2 · Duplicate skill keys — silent shadow (critical)
A repeated skill name under the `skills:` map silently disables the first copy (last-wins YAML).
```bash
node scripts/validate-config.js                        # authoritative — dup keys + checkout ordering
grep -oE '^  [a-z0-9-]+:' aeon.yml | sort | uniq -d    # names appearing more than once
```
Any name from `uniq -d` (or a dup-key error from the validator) is a finding. **critical** if either copy is enabled. Fix: remove the shadow copy.

### 3 · On disk but unconfigured — invisible skills (warn)
A skill with a `SKILL.md` but no `aeon.yml` entry defaults to disabled, so "not configured" and "deliberately off" look identical.
```bash
comm -23 <(ls skills/*/SKILL.md | cut -d/ -f2 | sort) \
         <(grep -oE '^  [a-z0-9-]+:' aeon.yml | tr -d ' :' | sort)
```
Each printed name exists on disk but has no config entry. **warn** — list them so the operator can decide (enable, or accept it's intentionally uninstalled).

### 4 · Enabled skill with no `SKILL.md` — broken entry (critical)
The inverse: an `aeon.yml` entry pointing at a skill dir that doesn't exist. For every `enabled: true` key, confirm `skills/<key>/SKILL.md` is present. Missing → **critical** (the run fails or no-ops).

### 5 · `requires:` entry the allowlist silently drops (warn)
Both list forms parse — inline (`requires: [KEY?]`) and block (`- KEY` on its own line), top-level or nested under `metadata:`. What still bites is the *value*: `scripts/skill_requires.sh` injects only names matching `^[A-Z][A-Z0-9_]{2,}$` (a trailing `?` = "works better with" is allowed). An entry that fails the filter — lowercase, fewer than 3 chars, a leading digit, or stray punctuation — is silently dropped, so the skill declares a credential it never receives and fails or degrades with a confusing auth error.
```bash
for f in skills/*/SKILL.md; do awk '
  /^---$/{n++; next} n!=1{next}
  function chk(x){ sub(/\?$/,"",x); if(x!="" && x !~ /^[A-Z][A-Z0-9_]{2,}$/) print FILENAME": requires entry \""x"\" is dropped by the allowlist filter" }
  collecting { if ($0 ~ /^[ \t]*-[ \t]*/){ it=$0; sub(/^[ \t]*-[ \t]*/,"",it); sub(/[ \t]*#.*/,"",it); gsub(/[ \t]/,"",it); chk(it); next } collecting=0 }
  /^[^ \t]/{im=0} /^metadata:/{im=1}
  /^requires:/ || (im && /^[ \t]+requires:/){
    if ($0 ~ /\[/){ line=$0; sub(/.*\[/,"",line); sub(/\].*/,"",line); k=split(line,a,","); for(i=1;i<=k;i++){gsub(/[ \t]/,"",a[i]); chk(a[i])} }
    else collecting=1
  }' "$f"; done
```
Flag any entry that fails the filter. **warn**. Fix: use the exact env-var name (uppercase, `^[A-Z][A-Z0-9_]{2,}$`), with a trailing `?` only to mark it optional.

### 6 · `mode:` typo — silent write grant (critical)
An unknown `mode:` value falls back to **`write`**, never to the safer tier. The only valid strings are `read-only` and `write`.
```bash
grep -rnE '^[[:space:]]*mode:' skills/*/SKILL.md | grep -vE ':\s*(read-only|write)\s*$'
```
`mode:` is nested under `metadata:` (spec form), so the pattern allows leading indent. Any printed line is a typo (`readonly`, `read only`, `readOnly`, …) that silently grants full write / `gh` / `git`. **critical** — least-privilege is broken. Fix: the exact string `read-only`. (A skill with *no* `mode:` line is intentionally `write` — not a finding.)

### 7 · `.mcp.json` unresolved `${VAR}` — kills ALL MCP (warn)
On the Claude harness a **single** `${VAR}` in `.mcp.json` that resolves to no secret disables **every** MCP server that run (`Skipping MCP this run.`), not just the broken one. List the referenced vars so the operator can confirm each is set:
```bash
[ -f .mcp.json ] && grep -oE '\$\{[A-Z0-9_]+\}' .mcp.json | sort -u
```
Report the list as **warn** with the note: verify each with `./aeon secrets ls --set`; any one unset silently blacks out MCP for skills that rely on it. (You can't read secret values in read-only mode — surface the vars, don't try to resolve them.)

### 8 · Multi-line `aeon.yml` entry — override ignored (warn)
Per-skill `model:` / `harness:` overrides are read by a single-line grep. An entry split across lines (its `{` and `}` on different lines) takes the **global default** instead — no error, and the run's `model=` line looks normal.
```bash
grep -nE '^\s+[a-z0-9-]+:\s*\{[^}]*$' aeon.yml    # opens { with no closing } on the same line
```
Each hit is a split entry → **warn**. Fix: collapse it to one inline `{ … }` line.

### 9 · Misleading `schedule:` / `cron:` in SKILL.md frontmatter (warn)
Schedules live in `aeon.yml` only; `scheduler.yml` never reads `SKILL.md`. A `schedule:` / `cron:` line in frontmatter looks load-bearing but does nothing — a trap for anyone editing the skill.
```bash
grep -rnE '^[[:space:]]*(schedule|cron):' skills/*/SKILL.md
```
Report as **warn** (informational): these lines are inert; the real schedule is the `aeon.yml` entry (the pattern allows leading indent, since spec-form frontmatter nests these under `metadata:`).

### 10 · Unquoted per-skill `harness:` / `model:` override (warn)
Same quoting rule as `schedule:` — the override grep requires double quotes. An unquoted `harness: grok` or `model: …` is silently ignored and the skill keeps running the global default.
```bash
grep -nE '\{[^}]*(harness|model):' aeon.yml | grep -vE '(harness|model): *"'
```
Each printed line has an unquoted override → **warn**. Fix: quote it (`harness: "grok"`).

### 11 · Category not one of the six — trips CI (warn)
Every skill's `category:` must be one of `core evolution basics dev crypto productivity` or the catalog CI gate goes red.
```bash
[ -x scripts/check-skill-categories.sh ] && bash scripts/check-skill-categories.sh
```
Report any offender as **warn**.

### 12 · Daily-log heading not `### <slug>` — health loop can't key it (warn)
`CLAUDE.md` mandates each skill append its daily-log entry under a **`### <slug>`** heading — "the health loop parses this shape", and `skill-health` / `heartbeat` key skills by **slug**. A skill that logs under `## <Display Name>` (wrong level *and* wrong identifier) still runs, but its narrative log is harder for the health view to attribute and for the cross-skill dedup ("read the last 3 days of logs") to match — a silent degrade, never an error.
```bash
for f in skills/*/SKILL.md; do
  s=$(basename "$(dirname "$f")"); grep -qE 'memory/logs/\$\{today\}' "$f" || continue   # only log-writers
  grep -qE '###[[:space:]]+'"$s"'\b' "$f" && continue                                     # compliant
  name=$(awk -F': *' '/^name:/{print $2; exit}' "$f" | sed 's/ *$//')
  hit=$(grep -oE '^##[[:space:]]+('"$s"'|'"${name:-$s}"')\b' "$f" | head -1)
  [ -n "$hit" ] && echo "$s logs under '$hit' — should be '### $s'"
done
```
Each hit → **warn**. Fix: change the Log-section heading (the instruction line *and* the example block) to `### <slug>`, and demote any sub-sections inside the block to `####`.

## Report

- **No findings → send nothing and exit.** A clean config is the common case; silence is correct and keeps this channel trustworthy.
- **Findings → one consolidated `./notify`**, most-severe first. Write the body to a scratch file and send with `-f` (never a long argv):
  ```bash
  ./notify -f <file> \
    --title "aeon-doctor: <N> config issue(s)" \
    --severity <critical if any critical else warn> \
    --mute-key "aeon-doctor"
  ```
  Group by severity. For each finding give: the skill, one line on what breaks (and that it's **silent** — the operator won't see it in the Actions tab), and the exact one-command fix. If a `critical` exists, lead with it — an enabled skill that never fires is the whole reason this skill exists.
- Do **not** open a PR or edit any file. Point mechanical fixes at `skill-repair` / the `./aeon` CLI; leave the fix to the operator.

## Constraints

- Read-only by contract — inspect config, never mutate it. No `Write` / `Edit` / `git` / `gh`.
- Every finding must cite the **exact** file + line and a **copy-pasteable** fix. A config finding with no fix is noise.
- Don't invent problems: only report what a check actually matched. If every check is clean, say nothing.
- Fully local — no network, no secrets, no GitHub API. Run-outcome health is `skill-health`'s job; live attention is `heartbeat`'s. Stay in your lane: the **static config**.

## Log

Append to `memory/logs/${today}.md` under a `### aeon-doctor` heading (the health loop parses this shape), as bullets: checks run, findings by severity (or `clean`), and whether a notification was sent.
End-states: `AEON_DOCTOR_CLEAN`, `AEON_DOCTOR_FINDINGS`, `AEON_DOCTOR_ERROR`.
