Borrowing it
Nothing to install: this file belongs to mark-weeks/hello-nested-worlds-adventure. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/mark-weeks/hello-nested-worlds-adventure/main/.claude/skills/changelog-entry/SKILL.mdgit clone --depth 1 https://github.com/mark-weeks/hello-nested-worlds-adventureWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mark-weeks/hello-nested-worlds-adventure/changelog-entry)<a href="https://agentmods.dev/skills/mark-weeks/hello-nested-worlds-adventure/changelog-entry"><img src="https://agentmods.dev/badge/skills/mark-weeks/hello-nested-worlds-adventure/changelog-entry/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mark-weeks/hello-nested-worlds-adventure/changelog-entry"><img src="https://agentmods.dev/badge/skills/mark-weeks/hello-nested-worlds-adventure/changelog-entry.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00023 | $0.00628 |
| Opus 5.5 | $0.00009 | $0.00251 |
| Sonnet 5.5 | $0.00005 | $0.00126 |
| Haiku 4.5 | $0.00002 | $0.00063 |
Grade A, and why
changelog-entry 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 25d 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.
How it starts
The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CHANGELOG entry
docs/CHANGELOG.md is the running deviation-and-surprise log the next cold
session navigates by. One entry per change batch, written so a reader who
wasn't there learns what actually happened — quantify surprises, don't just
describe outcomes.
House format
Add each batch under the first ## [Unreleased] in docs/CHANGELOG.md, newest
first within ### Added for new capabilities or ### Fixed for corrections to
existing behavior or guidance. The bullets above [Unreleased] record the
v0.1.1-qa.* QA prereleases cut on 2026-08-31 (the layout note under the title
explains them); leave them in place and never use them as the insertion point.
Keep the release-section scheme. Each batch is one bullet:
- Bold headline — a sentence naming what changed and why it matters, followed by a parenthesized list of the load-bearing files touched.
- Narrative with measured evidence. Numbers over adjectives: "+1 syllable renames 77/83 nodes", "70.68% of nodes", "~350 ms once per seed", "530 KB → 428 KB". If a surprise or deviation occurred during the work, it belongs here with its magnitude — that is the log's purpose.
Verified:sentence — the actual check outcomes and measured counts for checks run. For code/merge verification, include Ruff, Python, Vitest, bundle freshness, installed-wheel smoke, and Playwright if run. For documentation-only work, name the document checks; never fill in a passing suite that was not run.**Irreversibility check:**closing line — produced by theirreversibility-checkskill; "none — " for most batches, or the ratified one-way-door statement when a door was consciously walked through.
Rules
- One entry per change batch — never several small bullets for one PR, never one bullet spanning two PRs.
- A substantial audit or pre-mortem that drives the batch lands as
docs/evaluation/YYYY-MM-DD-<name>.mdin the same PR, and the entry points at it. - Architectural or continuity decisions get an ADR in
docs/decisions/house style (Context / Decision / Trade-offs accepted / Revisit when… / Rejected alternatives), preferably written before building. - Record material clarifications from the irreversibility review in the entry.
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.
- 25d ago Changed · +1 lines 7b5bb709c4b5
- 1mo ago Changed · +9 lines · -28 tokens per session 53807e474ce8
- 2mo ago First seen · 44 lines · 51 tokens per session scan A 3068a9f91215
changelog-entry is a skill published in the GitHub repository mark-weeks/hello-nested-worlds-adventure (5 stars, last pushed 2d ago), licensed Apache-2.0. It adds 23 tokens to every session and 628 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-31.
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