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.
npx agentmods add commands/vicmpen/markview/startgit clone --depth 1 https://github.com/vicmpen/markviewWhat 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 | $0.00015 | $0.00185 |
| Opus 5 | $0.00008 | $0.00093 |
| Sonnet 5 | $0.00003 | $0.00037 |
| Haiku 4.5 | $0.00002 | $0.00018 |
Grade A, and why
start 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
Start the markview server.
-
Target directory:
$ARGUMENTSif non-empty, otherwise the current working directory. Resolve to an absolute path. -
Launch the server as a background task:
node "${CLAUDE_PLUGIN_ROOT}/skills/markview/server.mjs"
-
Read the URL from the stdout line
Markdown reader for <dir> running at <url>. Do not assume port 4173 — the server picks the next free port if it is taken. -
Open the viewer for the user:
open <url>(macOS). -
Report the URL and mention that
/markview:stopstops the server.
If the server fails to start, show the user its stderr output rather than guessing.
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 · 18 lines · 15 tokens per session scan A 4e86012e662d
start is a command published in the GitHub repository vicmpen/markview (2 stars, last pushed 1mo ago), licensed MIT. It adds 15 tokens to every session and 185 once invoked, about $0.0001 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 2026-08-31.
Other commands, from other repositories
macaron
Launch the Macaron WebUI (GenUI builder, model switcher, session manager).
docs-add
Fetch a web source and make its Markdown searchable in this session. Accepts a built-in alias (e.g. "react"), an HTTPS URL, or "name url" to register a custom alias.
web-add
Fetch a web source and make its Markdown searchable in this session. Accepts a built-in alias (e.g. "react"), an HTTPS URL, or "name url" to register a custom alias.
docs-search
Search fetched Markdown by regex and pull surrounding context for the best hits. Optionally restrict to one source alias.
web-search
Search fetched web-source Markdown by regex and pull surrounding context for the best hits. Optionally restrict to one source alias.
docs-refresh
Re-fetch a cached source, ignoring the 7-day cache. Use when upstream content has changed.