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/verify-spectre/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/verify-spectre)<a href="https://agentmods.dev/skills/joenandez/spectre/verify-spectre"><img src="https://agentmods.dev/badge/skills/joenandez/spectre/verify-spectre/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/verify-spectre"><img src="https://agentmods.dev/badge/skills/joenandez/spectre/verify-spectre.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 | $0.00132 | $0.01374 |
| Opus 5.5 | $0.00053 | $0.00550 |
| Sonnet 5.5 | $0.00026 | $0.00275 |
| Haiku 4.5 | $0.00013 | $0.00137 |
Grade A, and why
verify-spectre 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 — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.
verify-spectre
The gate suite for the Spectre plugin itself. Run it after any change to skills, agents, hooks, src/lib/, or the Codex mirror — and always before a release.
The reason this exists as scripts rather than a checklist: Spectre's real failures are silent. A skill whose frontmatter name drifts from its directory never triggers. A stale Codex mirror serves every Codex user the previous version indefinitely. A missing SessionStart registry or exact-load path leaves project knowledge undiscoverable without blocking the user's work. None of these break a test or throw an error — they just quietly stop working. So every check asserts an observable condition (file contents, exit code, byte-comparison) and exits nonzero. Nothing here is eyeballed.
Run it
node .agents/skills/verify-spectre/scripts/verify.mjs # gates 1-4 (default, pre-commit)
node .agents/skills/verify-spectre/scripts/verify.mjs --fast # gates 1-2 (seconds, on every change)
node .agents/skills/verify-spectre/scripts/verify.mjs --release # gates 1-5 (before publishing)
node .agents/skills/verify-spectre/scripts/verify.mjs --gate 4 # one gate, when iterating on a fix
The scripts live alongside this skill under .agents/skills/verify-spectre/scripts/ and are the single canonical copy tracked by the public repository. Keeping the executable gates beside the skill makes a fresh clone independently verifiable without relying on ignored .claude/ state.
Run from the repo root. The scripts locate the repo from their own path, so they work regardless of your working directory.
Report the PASS/FAIL summary. On failure, each check already names what was expected and what was found — quote that rather than re-deriving it.
The gates
| # | Gate | Asserts |
|---|---|---|
| 1 | structure | Skill/agent frontmatter valid and name matches its directory · expected-skills manifest intact · hooks.json parses, scripts exist, SessionStart order is bootstrap → handoff-resume → load-knowledge · no active skill contains {{REGISTRY}} · no stale fork naming · every Skill(spectre-x) / /spectre:spectre-x / @spectre:agent reference resolves · four canonical version files agree |
| 2 | tests | npm test passes; reports the test count so a silent drop (deleted tests, not fixed ones) is visible |
| 3 | codex | sync-codex --check is clean — the committed mirror matches canonical source · generated hooks reference .mjs, never .cjs, and every referenced script exists · user commands use $spectre:spectre-* and skill paths use .agents/skills/ |
| 4 | real-cli | The CLI and hooks actually run, in throwaway temp dirs with a fresh CODEX_HOME (see below) |
| 5 | release | Clean tree · mirror in sync · versions in lockstep · tag free · GitHub authenticated |
What ships with it
7 files 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.
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 90faa5a85743
- 2mo ago First seen · 61 lines · 132 tokens per session scan A d966ba846026
verify-spectre is a skill published in the GitHub repository joenandez/spectre (164 stars, last pushed 1mo ago), licensed MIT. It adds 132 tokens to every session and 1,374 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.
verify-spectre compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| verify-spectrejoenandez/spectre | Skill | 164 | 1mo ago | MIT | A | 132 | 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 |