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 skills/wgpsec/aboutsecurity/ctf-flag-verificationnpx skills add wgpsec/AboutSecurity --skill ctf-flag-verificationgit clone --depth 1 https://github.com/wgpsec/AboutSecurityWrote 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/wgpsec/aboutsecurity/ctf-flag-verification)<a href="https://agentmods.dev/skills/wgpsec/aboutsecurity/ctf-flag-verification"><img src="https://agentmods.dev/badge/skills/wgpsec/aboutsecurity/ctf-flag-verification.svg" alt="Measured on agentmods" 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 | $0.00152 | $0.01234 |
| Opus 5 | $0.00076 | $0.00617 |
| Sonnet 5 | $0.00030 | $0.00247 |
| Haiku 4.5 | $0.00015 | $0.00123 |
Grade A, and why
ctf-flag-verification 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
2 files 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.
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.
- 4d ago First seen · 79 lines · 152 tokens per session scan A bce76cee2f87
ctf-flag-verification is a skill published in the GitHub repository wgpsec/AboutSecurity (1,715 stars, last pushed 4d ago), with no licence file. It adds 152 tokens to every session and 1,234 once invoked, about $0.0008 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 2026-08-30.
Other skills, from other repositories
redteam-sqli-detail-pack
Domain routing and boundary guidance for authorized SQL injection testing, including union-based, blind, error-based, stacked query, and second-order SQL injection variants. Use when a task belongs to the SQL injection domain and needs scope, evidence, pivot, or exit criteria.
opencrow-web-toolbox
Use the installed web CTF tooling for endpoint discovery, fuzzing, and automated SQL injection workflows. Use when an agent needs sqlmap, gobuster, ffuf, dirb, or wfuzz, and when full installs may also include manual Burp or ZAP steps.
api-canvas
DataCanvas primitive reference — a Tier 3 SQL/analytical workspace for tabular MCP servers, backed by DuckDB. Use when registering tables from upstream APIs, running ad-hoc SQL across them, and exporting results. Covers the acquire → register → query → export flow, per-table TTL, the token-sharing pattern for…
api-mirror
Stand up a persistent, self-refreshing local mirror of a bulk upstream dataset with the MirrorService (@cyanheads/mcp-ts-core/mirror). Use when a server wraps a large or slow API and should query a synced local index (embedded SQLite + FTS5) instead of paginating the live API per request.
Database Credential Extraction
This skill should be used when the user asks about "dump database", "extract credentials", "sqlite", "mysql credentials", "database passwords", or needs to extract user data from common database systems.
database-security
Use for authorized database security assessment covering PostgreSQL/MySQL/MSSQL/Mongo/Redis exposure, authz, UDF/command paths, and misconfiguration review.