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 skills add stijnVanHorenbeek/marten_mcp --skill martendbgit clone --depth 1 https://github.com/stijnVanHorenbeek/marten_mcpWrote 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/stijnvanhorenbeek/marten_mcp/martendb)<a href="https://agentmods.dev/skills/stijnvanhorenbeek/marten_mcp/martendb"><img src="https://agentmods.dev/badge/skills/stijnvanhorenbeek/marten_mcp/martendb/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/stijnvanhorenbeek/marten_mcp/martendb"><img src="https://agentmods.dev/badge/skills/stijnvanhorenbeek/marten_mcp/martendb.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00058 | $0.00300 |
| Opus 5 | $0.00029 | $0.00150 |
| Sonnet 5 | $0.00012 | $0.00060 |
| Haiku 4.5 | $0.00006 | $0.00030 |
Grade A, and why
martendb 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 10d 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
MartenDB Expert
- Use the
marten-docsMCP server for Marten documentation. - Do not fetch bulk doc dumps or alternate mirrors unless the MCP server is unavailable.
- Keep retrieval narrow and minimal.
Retrieval pattern
- Start with
search_docs(query, limit=3). - Narrow within a page using one of:
list_headings(path)search_within_page(path, query, limit=3)
- Use
read_context(id, before=1, after=1)only to inspect nearby chunk refs. - Read content with
read_section(id, offset=0, maxChars=1200). - Continue with
offset=nextOffsetonly whenhasMore=true.
Rules
- Do not use broad page reads or bulk retrieval.
- Prefer continuing from a good hit over running repeated similar searches.
- If the user mentions a specific Marten version, include it in the query and answer against that version.
- If version behavior is unclear, say the answer is based on current indexed docs.
- Separate documented Marten behavior from your own implementation advice.
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.
- 10d ago First seen · 27 lines · 58 tokens per session scan A 87a494a435b4
martendb is a skill published in the GitHub repository stijnVanHorenbeek/marten_mcp (0 stars, last pushed 5mo ago), licensed MIT. It adds 58 tokens to every session and 300 once invoked, about $0.0003 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.
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