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 freema/vellumnpx agentmods add plugins/freema/vellum/vellumgit clone --depth 1 https://github.com/freema/vellumGrade A, and why
vellum 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": "vellum",
"description": "Connect Claude to your self-hosted vellum markdown vault: read, write, search, tags, tasks and backlinks.",
"version": "1.9.0",
"author": {
"name": "Tomas Grasl"
},
"repository": "https://github.com/freema/vellum",
"license": "MIT"
}
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 · 11 lines scan A 31520a222c0d
vellum is a plugin published in the GitHub repository freema/vellum (4 stars, last pushed 12d 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
telawiki
tela — the markdown-native team wiki your agents can read and write.
tela
Connect Claude Code to your tela wiki: semantic research with citations over your team's docs, plus authoring into rich pages, spreadsheets with real formulas, and presentable decks.
markdown-vault-mcp
Generic markdown vault MCP with hybrid search.
callee
Plugin marketplace listing 1 plugin: callee.
pullmd
Read web pages, documents (PDF/Office/EPUB), and YouTube transcripts as clean Markdown via PullMD, with WebFetch fallback.
arscontexta
Conversational derivation engine — generate agent-native memory architecture from natural conversation. 15 kernel primitives, 26 commands, 17 feature blocks, 3 presets.