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.
/plugin marketplace add spunt/markup-modenpx agentmods add plugins/spunt/markup-mode/marketplacegit clone --depth 1 https://github.com/spunt/markup-modeGrade A, and why
markup-mode 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 yesterday.
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
{
"name": "markup-mode",
"owner": {
"name": "Bob Spunt",
"url": "https://github.com/spunt"
},
"plugins": [
{
"name": "markup-mode",
"source": "./",
"description": "A review layer your agent applies to its own HTML or Markdown output in one command. You pin feedback to the exact word or element, and Markup Mode compiles each note to Markdown precise enough for the agent to act on, then hands it back. No backend, no build step."
}
]
}
What ships with it
1 file beside marketplace.json 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.
- yesterday First seen · 15 lines scan A 8906798f3d31
markup-mode is a plugin published in the GitHub repository spunt/markup-mode (2 stars, last pushed 2mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.
Other plugins, from other repositories
report-skill
A Claude Code skill that turns long-form agent output into a designed HTML report instead of a flat Markdown file.
report
Render long-form agent output as a designed HTML report — TOC, callouts, framed figures, footnotes, light/dark themes, in-document review comments, and lossless round-trip back to Markdown.
scaccogatto
Claude Code plugins by scaccogatto.
spacedock
Turn directories of markdown files into structured workflows operated by AI agents.
scraps-migration
LLM migration workflows for moving Scraps wikis from v0 to v1. Runs version-pinned audits, converts tag and config syntax, and verifies the result with v1 lint/build.
zero-slop
Zero Slop is a skill, not an AI model. Claude or another compatible model performs the editorial roles; local tools score the writing and protect facts, then the assistant and tools verify the final text.