mcp-trentina: Skill for Claude Code

.claude/skills/trentina-boundary-review/SKILL.md

trentina-boundary-review is a skill for Claude Code from crunchtools/mcp-trentina. It costs 67 tokens per session (5,929 once invoked), scanned A, original, AGPL-3.0.

A review method for checking Trentina’s trust boundary and fail-closed behavior. It examines whether each boundary crossing is justified by reliable evidence and reports the exact violated obligation.

In plain words
What is it for?
Use it to audit boundary crossings, classify evidence, reject invalid justifications, and document findings with locations, scenarios, and severity.
Why use it?
It helps expose cases where untrusted or weak assumptions could cross into a trusted part of the system or cause unsafe behavior.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is crunchtools/mcp-trentina's own configuration. It tells Claude Code how to work on mcp-trentina itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-trentina configures →

Reuse

Borrowing it

Nothing to install: this file belongs to crunchtools/mcp-trentina. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/crunchtools/mcp-trentina/main/.claude/skills/trentina-boundary-review/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/crunchtools/mcp-trentina

Made for: Claude Code.

Wrote 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.

agentmods badge for trentina-boundary-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/crunchtools/mcp-trentina/trentina-boundary-review/github.svg)](https://agentmods.dev/skills/crunchtools/mcp-trentina/trentina-boundary-review)
Your own site
<a href="https://agentmods.dev/skills/crunchtools/mcp-trentina/trentina-boundary-review"><img src="https://agentmods.dev/badge/skills/crunchtools/mcp-trentina/trentina-boundary-review/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.

agentmods 80×15 button for trentina-boundary-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/crunchtools/mcp-trentina/trentina-boundary-review"><img src="https://agentmods.dev/badge/skills/crunchtools/mcp-trentina/trentina-boundary-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,929 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00067 $0.05929
Opus 5.5 $0.00027 $0.02372
Sonnet 5.5 $0.00013 $0.01186
Haiku 4.5 $0.00007 $0.00593

Measured 28d ago against content hash 78a40d1e9871, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

trentina-boundary-review scanned grade A with 1 finding 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 28d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

any `httpx.AsyncClient`, `httpx.get`, `urllib`, socket, or
.claude/skills/trentina-boundary-review/SKILL.md · 497 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md 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.

Changes

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.

  1. 28d ago First seen · 497 lines · 67 tokens per session scan A 78a40d1e9871

Subscribe to this mod's changes

trentina-boundary-review is a skill published in the GitHub repository crunchtools/mcp-trentina (11 stars, last pushed 22d ago), licensed AGPL-3.0. It adds 67 tokens to every session and 5,929 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-30.

Related

Other skills, from other repositories

autoreview

Structured code review through the shared OpenClaw agent-skills installation.

openclaw/clawhub · 17 tokens

omh-code-review

This is an OMH code-review workflow skill, projected for Agent Skills hosts (Claude Code, Codex, Cursor, opencode, OpenClaw, pi).

rlaope/oh-my-hermes · 48 tokens

revdiff-plan

Review the last Codex assistant message (plan, analysis, or proposal) with inline annotations in a TUI overlay. Extracts the most recent response from Codex rollout files and opens it in revdiff for review and annotation. Activates on "revdiff-plan", "review plan with revdiff", "annotate plan", "review last response"…

umputun/revdiff · 84 tokens

re0-merge

Review and land an external contribution the way this suite does: gate it against the thesis, land it with the author's credit intact, complete a new skill rather than merging it raw, then approve, credit, and explain before closing. Use when reviewing a pull request, as any collaborator or maintainer, not only the…

LilMGenius/paperthin · 70 tokens

explore-unknowns

Guide the user through a quadrant walk that maps the unknowns of a task — open by listing the known knowns, then work through known unknowns, unknown knowns, and unknown unknowns one stage at a time, ending with a complete four-quadrant map in the user's hands. Use when a request is ambiguous or underspecified, the…

dzhng/skills · 162 tokens

asplos-writing-style

Use when drafting or revising ASPLOS prose — engineering the first two pages that rapid review actually reads, stating the cross-layer insight as one quotable sentence, structuring per-layer mechanism sections, writing bounded claims, and fitting everything into 11 self-contained pages that include figures and…

brycewang-stanford/Awesome-Journal-Skills · 65 tokens