Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add gopherguides/gopher-ai/plugin install go-devWrote 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/gopherguides/gopher-ai/validate-skills)<a href="https://agentmods.dev/skills/gopherguides/gopher-ai/validate-skills"><img src="https://agentmods.dev/badge/skills/gopherguides/gopher-ai/validate-skills.svg" alt="Measured on agentmods" 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 | $0.00049 | $0.00342 |
| Opus 5 | $0.00024 | $0.00171 |
| Sonnet 5 | $0.00010 | $0.00068 |
| Haiku 4.5 | $0.00005 | $0.00034 |
Grade A, and why
validate-skills 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.
What it actually says
Validate Skills
Use $go-dev:validate-skills [file|directory] [--json] to validate one file,
one directory, or the default plugin command and skill Markdown paths.
Plugin Resource Resolution
<PLUGIN_ROOT> is notation. Replace it with a concrete absolute plugin root
before every resource read or command:
- Codex: Start from the directory containing the absolute selected
SKILL.mdpath, then ascend two directories (skills/<name>to plugin root). - Claude Code: Bind it to the injected
${CLAUDE_PLUGIN_ROOT}value.
Read both shared workflow files completely before acting:
<PLUGIN_ROOT>/lib/codex-command-adapter.md<PLUGIN_ROOT>/commands/validate-skills.md
Resolve <PLUGIN_ROOT>/scripts/validate-skills.py, pass the adapter-bound
SKILL_ARGS as distinct arguments without evaluating them, and execute the
helper. With --json, return its stdout unchanged so the result remains one
JSON object. Propagate its exit status.
Use these references when interpreting findings or changing validator rules:
<PLUGIN_ROOT>/lib/validate-skills/classification.md<PLUGIN_ROOT>/lib/validate-skills/execution.md<PLUGIN_ROOT>/lib/validate-skills/ai-review.md
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.
- 2d ago Changed · -10 lines · -33 tokens per session 4249d27e94b9
- 6d ago First seen · 46 lines · 82 tokens per session scan A b2b03246b88b
validate-skills is a skill published in the GitHub repository gopherguides/gopher-ai (21 stars, last pushed today), licensed MIT. It adds 49 tokens to every session and 342 once invoked, about $0.0002 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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