Borrowing it
Nothing to install: this file belongs to joenandez/spectre. 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/joenandez/spectre/main/.agents/skills/spectre-rewrite-skill/SKILL.mdgit clone --depth 1 https://github.com/joenandez/spectreWrote 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/joenandez/spectre/spectre-rewrite-skill)<a href="https://agentmods.dev/skills/joenandez/spectre/spectre-rewrite-skill"><img src="https://agentmods.dev/badge/skills/joenandez/spectre/spectre-rewrite-skill/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/joenandez/spectre/spectre-rewrite-skill"><img src="https://agentmods.dev/badge/skills/joenandez/spectre/spectre-rewrite-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00118 | $0.02961 |
| Opus 5.5 | $0.00047 | $0.01184 |
| Sonnet 5.5 | $0.00024 | $0.00592 |
| Haiku 4.5 | $0.00012 | $0.00296 |
Grade A, and why
spectre-rewrite-skill 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 1mo 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 — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Spectre Skill-Rewrite Proposal Generator
Turn one (or a small same-tier batch of) SPECTRE skill(s) into a proposed Spectre contract-form rewrite, grounded in the spectre-light learnings. Produces a review-ready proposal — write it to docs/tasks/spectre-light/proposals/<skill>.SKILL.md (scratch), not the live plugin.
INPUT (from $ARGUMENTS)
- Target skill(s): the
spectre-*skill name(s) in$ARGUMENTS(one, or a small same-tier batch). If absent, ask which skill to rewrite. - Source path(s):
plugins/spectre/skills/<skill>/SKILL.md. - Freedom tier: classify it (below) unless the user states it.
- Size benchmark: the source
wc -c, and the tier budget from distillation §5.
All doc paths below are relative to the repo root (this skill assumes cwd = the spectre repo).
ROLE
You are a Spectre skill-compression specialist. You re-express a verbose, procedural SPECTRE skill as a compact input→output contract — clear on WHAT, silent on HOW — that preserves every load-bearing safety procedure while cutting prose the model already knows. You optimize for quality-per-token, and you treat the contract, not the procedure, as the thing that preserves quality.
You output proposals for human review. When a load-bearing element cannot survive the tier budget, you flag it, never silently cut it.
GROUND YOURSELF FIRST (read, do not summarize back)
resources/spectre-light/concepts/research-distillation.md— the bundled principles, freedom-tier framing (§5), DO-NOT-STRIP list (§4), contract fields (§2), and cache/progressive-disclosure rules. (The size budget is the token tripwire inscope.md §3, not the old char ranges.)resources/spectre-light/concepts/scope.md— bundled IN/OUT/ANTI-SCOPE. Anti-scope is binding: no new capability, phase-model change, or subagent-roster change.resources/spectre-light/specs/plan.md— bundled §2 contract template, Type A/B/C/D cross-ref remap, and §6 Out-of-Bounds.- The source skill(s) in full.
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.
- 1mo ago Changed 662680a39954
- 2mo ago First seen · 116 lines · 118 tokens per session scan A 347c44e45ee5
spectre-rewrite-skill is a skill published in the GitHub repository joenandez/spectre (164 stars, last pushed 1mo ago), licensed MIT. It adds 118 tokens to every session and 2,961 once invoked, about $0.0005 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 2026-08-30.
spectre-rewrite-skill compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| spectre-rewrite-skilljoenandez/spectre | Skill | 164 | 1mo ago | MIT | A | 118 | Claude Code |
| imagegenopenai/codex | Skill | 133k | yesterday | Apache-2.0 | A | 113 | Codex |
| playwright-climicrosoft/playwright | Skill | 99k | yesterday | Apache-2.0 | A | 19 | Claude Code |
| local-ai-agentsmicrosoft/ai-agents-for-beginners | Skill | 79k | 4d ago | MIT | A | 200 | Claude Code, Codex |
| systematic-debuggingobra/superpowers | Skill | 313k | 3d ago | MIT | A | 21 | Claude Code |
| next-cache-components-adoptionvercel/next.js | Skill | 143k | today | MIT | A | 95 | Claude Code |
| next-partial-prefetching-adoptionvercel/next.js | Skill | 143k | today | MIT | A | 103 | Claude Code |