Getting it into your agent
There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.
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.
[](https://agentmods.dev/skills/miru-zero/zero-brain/csp-bypass-advanced)<a href="https://agentmods.dev/skills/miru-zero/zero-brain/csp-bypass-advanced"><img src="https://agentmods.dev/badge/skills/miru-zero/zero-brain/csp-bypass-advanced.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 5.1 | $0.00052 | $0.03248 |
| Opus 5 | $0.00026 | $0.01624 |
| Sonnet 5 | $0.00010 | $0.00650 |
| Haiku 4.5 | $0.00005 | $0.00325 |
Grade A, and why
csp-bypass-advanced 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 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.
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
97% identical to csp-bypass-advanced — 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.
How it starts
The opening of the file, as written. The whole thing — 258 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SKILL: CSP Bypass — Advanced Techniques
AI LOAD INSTRUCTION: Covers per-directive bypass techniques, nonce/hash abuse, trusted CDN exploitation, data exfiltration despite CSP, and framework-specific bypasses. Base models often suggest
unsafe-inlinebypass without checking if the CSP actually uses it, or miss the criticalbase-uriandobject-srcgaps.
0. RELATED ROUTING
- xss-cross-site-scripting for XSS vectors to deliver after CSP bypass
- dangling-markup-injection when CSP blocks scripts but HTML injection exists — exfiltrate without JS
- crlf-injection when CRLF can inject CSP header or steal nonce via response splitting
- waf-bypass-techniques when both WAF and CSP must be bypassed
- clickjacking when CSP lacks
frame-ancestors— clickjacking still possible
1. CSP DIRECTIVE REFERENCE MATRIX
| Directive | Controls | Default Fallback |
|---|---|---|
default-src |
Fallback for all -src directives not explicitly set |
None (browser default: allow all) |
script-src |
JavaScript execution | default-src |
style-src |
CSS loading | default-src |
img-src |
Image loading | default-src |
connect-src |
XHR, fetch, WebSocket, EventSource | default-src |
frame-src |
iframe/frame sources | default-src |
font-src |
Font loading | default-src |
object-src |
<object>, <embed>, <applet> |
default-src |
media-src |
<audio>, <video> |
default-src |
base-uri |
<base> element |
No fallback — unrestricted if absent |
form-action |
Form submission targets | No fallback — unrestricted if absent |
frame-ancestors |
Who can embed this page (replaces X-Frame-Options) | No fallback — unrestricted if absent |
report-uri / report-to |
Where violation reports are sent | N/A |
navigate-to |
Navigation targets (limited browser support) | No fallback |
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 · 258 lines · 52 tokens per session scan A 2b832330a8ee
csp-bypass-advanced is a skill published in the GitHub repository miru-zero/zero-brain (0 stars, last pushed 18d ago), licensed MIT. It adds 52 tokens to every session and 3,248 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to csp-bypass-advanced, differing in 6 lines, and is treated as a copy.
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