hermit-evolution

A report showing how a hermit system has changed over time, including costs, activity sources, routines, proposals, and produced work.

In plain words
What is it for?
Use it to review cost trends, proposal activity, active routines and watches, recent output, and changes since the system’s beginning.
Why use it?
It turns scattered history into a view of growth, workload, and trends since the system was started.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/gtapps/claude-code-hermit/hermit-evolution
Any agent
npx skills add gtapps/claude-code-hermit --skill hermit-evolution
Clone the repo
git clone --depth 1 https://github.com/gtapps/claude-code-hermit

Made for: Claude Code, Codex.

Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 744 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00074 $0.00744
Opus 5 $0.00037 $0.00372
Sonnet 5 $0.00015 $0.00149
Haiku 4.5 $0.00007 $0.00074

Measured 2d ago against content hash 17683d456008, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

hermit-evolution scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/claude-code-hermit/skills/hermit-evolution/SKILL.md · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Hermit Evolution

Synthesize a coherent evolution report: cost trend and source split, autonomy and proposal velocity, active routines and watches, top things produced last month, and what grew organically since hatch.

Step 0 — Channel reply

If this skill was invoked from a channel-arrived message (the inbound prompt contains a <channel source="..."> tag), reply via that channel's reply tool. Otherwise emit to conversation.

Step 1 — Dispatch the eval runner

Dispatch claude-code-hermit:skill-eval-runner pointed at ${CLAUDE_PLUGIN_ROOT}/skills/hermit-evolution/reference.md. The runner reads the weekly review files, proposal metrics, config, session reports, and OPERATOR.md — and runs proposal.ts metrics and cost-report.ts reflect — in an isolated context, then returns the assembled evolution report. This keeps those heavy reads off this session's inherited context.

Pass plugin_root: ${CLAUDE_PLUGIN_ROOT} in the dispatch prompt — the runner reads reference.md as file content, where ${CLAUDE_PLUGIN_ROOT} is never substituted, so it needs the resolved absolute path to run the scripts and read template/skill paths.

Eval runner return schema — the runner's return value is a JSON object conforming to this block. The schema is byte-identical in reference.md (producer) and here (consumer); a contract test asserts this.

{
  "report": "<assembled ≤1500-char report, section structure above>"
}

Failure policy: if the runner returns null or malformed JSON, fail-open — deliver a one-line "hermit-evolution: snapshot unavailable (analysis-runner failed)" via the Step 0 target and stop.

Step 2 — Deliver

Deliver the runner's report verbatim (≤1500 chars) via the Step 0 target. The runner already omits empty sections; do not re-synthesize. For reference, the report uses this section structure:

### Cost
- Trend (weekly): $A → $B → $C → $X (Δ +/-N%)
- Last 30d: $X.XX total — scheduled (routines/heartbeat): $Y (N%), interactive: $Z (N%)

### Autonomy
- Self-directed: N% this week (vs M% prior, Δ +/-N pp)

### Proposal velocity
- Median resolution: Nd (N proposals, last 30d)
[acceptance-by-source table, rows n>0 only; note triggered kill gates]

### Routines & watches
- heartbeat: every X
- <routine-id>: <cron> · fired N× in last 30d
- watch <monitor-id>: active

### Top-3 produced (inferred)
- <one-line description>
(inferred — no operator-used signal exists)

### Grown since hatch (approximated)
- OPERATOR.md: <sections added, or "no additions vs template">
- Skills: <project-local skill names, or "none">
(approximated — no hatch baseline stored)

Read the full file on GitHub · 61 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 61 lines · 74 tokens per session scan A 17683d456008

Subscribe to this mod's changes

hermit-evolution is a skill published in the GitHub repository gtapps/claude-code-hermit (73 stars, last pushed today), licensed MIT. It adds 74 tokens to every session and 744 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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