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 blacklanternsecurity/red-run --skill race-conditiongit clone --depth 1 https://github.com/blacklanternsecurity/red-runWrote 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/blacklanternsecurity/red-run/race-condition)<a href="https://agentmods.dev/skills/blacklanternsecurity/red-run/race-condition"><img src="https://agentmods.dev/badge/skills/blacklanternsecurity/red-run/race-condition/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/blacklanternsecurity/red-run/race-condition"><img src="https://agentmods.dev/badge/skills/blacklanternsecurity/red-run/race-condition.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 | $0.00020 | $0.04996 |
| Opus 5 | $0.00010 | $0.02498 |
| Sonnet 5 | $0.00004 | $0.00999 |
| Haiku 4.5 | $0.00002 | $0.00500 |
Grade A, and why
race-condition scanned grade A with 2 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 5d 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.
Sends data to an external URLlowData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
curl -sI -X POST https://TARGET/api/transfer -d 'amount=100' \ Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- HTTP/2 support on target (for single-packet attack — check with `curl --http2`) The source is not reproduced here
Licensed GPL-3.0
The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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.
- 5d ago First seen · 687 lines · 20 tokens per session scan A 10ead66e5b83
race-condition is a skill published in the GitHub repository blacklanternsecurity/red-run (267 stars, last pushed 5mo ago), licensed GPL-3.0. It adds 20 tokens to every session and 4,996 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
Other skills, from other repositories
race-condition-toctou-exploitation
Exploit Time-of-Check to Time-of-Use (TOCTOU) race conditions in web applications and APIs. Use this skill when testing transactional operations (e.g., applying coupons, transferring funds, redeeming rewards, or purchasing items) to bypass business logic and duplicate actions before the server updates its database…
hunt-race-condition
Hunting skill for race condition vulnerabilities. Built from 12 public bug bounty reports including modern HTTP/2 single-packet attack cases (James Kettle DEF CON 2023 "Smashing the State Machine"; RyotaK / Flatt Security 10,000-request first-sequence-sync expansion 2024). Covers coupon double-redemption, gift-card…
Concurrency Testing Patterns
Testing concurrent code including race condition detection, deadlock prevention, thread safety verification, and parallel execution correctness.
Async Correctness 非同期処理の正しさ検証
A code review check for asynchronous code, meaning work that finishes later through async/await, promises, or chained callbacks. It looks for missing waits, ignored errors, and operations that can run in the wrong order or interfere with each other.
bugbot
A tool that scans code changes and diffs for possible bugs, race conditions, and null-pointer problems.
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.