sentry

sentry is a skill for Claude Code, Codex from emilvaintrub/ShowRunner. It costs 109 tokens per session (834 once invoked), scanned A, original, MIT.

A software-security workflow for finding, assessing, fixing, and checking security weaknesses. It includes governed penetration testing and records accepted risks and past regressions.

In plain words
What is it for?
Sweeping applications and other software for security issues, fixing individual findings, independently verifying them, and maintaining security posture.
Why use it?
It organizes security reviews and preserves risk decisions, while requiring code fixes to stop before they are merged into the main branch.

Skill for Claude CodeCodex

Part of the showrunner plugin — 6 skills shipped together

Install

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.

agentmods
npx agentmods add skills/emilvaintrub/showrunner/sentry
Any agent
npx skills add emilvaintrub/ShowRunner --skill sentry
Clone the repo
git clone --depth 1 https://github.com/emilvaintrub/ShowRunner

Made for: Claude Code, Codex.

Or install showrunner, the plugin that ships this one along with the rest of its 6 skills.

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 sentry

README.md
[![agentmods](https://agentmods.dev/badge/skills/emilvaintrub/showrunner/sentry.svg)](https://agentmods.dev/skills/emilvaintrub/showrunner/sentry)
Your own site
<a href="https://agentmods.dev/skills/emilvaintrub/showrunner/sentry"><img src="https://agentmods.dev/badge/skills/emilvaintrub/showrunner/sentry.svg" alt="Measured on agentmods" height="20"></a>
Per session 109 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 834 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00109 $0.00834
Opus 5 $0.00055 $0.00417
Sonnet 5 $0.00022 $0.00167
Haiku 4.5 $0.00011 $0.00083

Measured 4d ago against content hash 9b78966d685f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sentry 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 4d 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.

showrunner/sentry/SKILL.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sentry

Find security weaknesses systematically, preserve human risk decisions, and stop every code fix before main.

Load

  1. Read ../core/method.md.
  2. Read the active project's .claude/showrunner/config.md.
  3. Read method.md.
  4. Load knowledge/catalog.md for sweeps.
  5. Load knowledge/standards.md only for mapping or refresh.
  6. Load ../core/dispatch.md for fix.
  7. Load ../core/merge.md for verify or merge.
  8. Load pen-test/SKILL.md for pen-test.
  9. Load only the template required by the requested command.

Route

  • init: infer security bindings, preserve shared and sibling config, and optionally create a project security document.
  • sweep <category|all>: perform a read-only categorical review, ingest any configured external live-site scanner evidence such as Code Quality Check, collect configured browser evidence such as Playwright traces and console or network observations, and reconcile findings with accepted-risk and regression memory.
  • fix <finding-id>: resolve human-owned decisions, dispatch one isolated fix, verify evidence, and stop before merge.
  • verify <finding-id>: independently review the exact feature tip against the original finding and regression catalog.
  • accept <finding-id>: append an evidence-backed risk decision with owner, expiry, and revisit trigger.
  • deps: run configured dependency tools and classify direct, transitive, override, and accepted cases.
  • pen-test init|plan|run|validate|retest|report|abort|ingest: route a governed assessment through the nested Pen Test skill.
  • pen-test <report-path>: compatibility alias for pen-test ingest <report-path>.
  • monthly: refresh knowledge, sweep, audit dependencies, age accepted risks, and write one digest without starting fixes.
  • refresh-knowledge: fetch authoritative pins through the configured adapter, cache evidence, and flag drift.
  • merge: after exact-tip SHIP, required smoke, and explicit approval, reuse the shared two-commit ceremony.

Read the full file on GitHub · 73 lines

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. 4d ago First seen · 73 lines · 109 tokens per session scan A 9b78966d685f

Subscribe to this mod's changes

sentry is a skill published in the GitHub repository emilvaintrub/ShowRunner (2 stars, last pushed 2mo ago), licensed MIT. It adds 109 tokens to every session and 834 once invoked, about $0.0005 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.