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/miru-zero/zero-brain/injection-checkingnpx skills add miru-zero/zero-brain --skill injection-checkinggit clone --depth 1 https://github.com/miru-zero/zero-brainWhat 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 | $0.00050 | $0.00624 |
| Opus 5 | $0.00025 | $0.00312 |
| Sonnet 5 | $0.00010 | $0.00125 |
| Haiku 4.5 | $0.00005 | $0.00062 |
Grade A, and why
injection-checking 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 2d 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.
This is a copy
98% identical to injection-checking — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Injection Testing Router
This is the routing entry point when input reaches a dangerous interpreter or execution environment.
After confirming this is an injection-class issue, use it to decide whether it is mainly browser context, database, template engine, server-side requests, XML parsing, or system commands.
When to Use
- Input reaches HTML, JS, SQL, templates, URL fetchers, XML parsers, or shell
- You have not yet decided whether to start with XSS, SQLi, SSRF, XXE, SSTI, CMDi, or NoSQL
- You need to choose the correct deep-topic skill based on input flow
Skill Map
- XSS Cross Site Scripting
- SQLi SQL Injection
- SSRF Server Side Request Forgery
- XXE XML External Entity
- SSTI Server Side Template Injection
- CMDi Command Injection
- NoSQL Injection
- Deserialization Insecure
- JNDI Injection
- Expression Language Injection
- CRLF Injection
- Extra Injection Types (SSI, LDAP, XPath)
- Request Smuggling
- Prototype Pollution
- Type Juggling
- HTTP Parameter Pollution
- XSLT Injection
- CSV Formula Injection
Recommended Flow
- First identify the final sink of the input
- Then choose the topic skill that best matches that interpreter
- Small payload samples and quick triage are merged into each main skill; no extra payload router is needed
Related Categories
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.
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.
- 2d ago First seen · 48 lines · 50 tokens per session scan A b9a9a5dc6563
injection-checking is a skill published in the GitHub repository miru-zero/zero-brain (0 stars, last pushed 15d ago), licensed MIT. It adds 50 tokens to every session and 624 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to injection-checking, differing in 6 lines, and is treated as a copy.
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