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 instructions/ivanshtokov/copilot-kit/securitygit clone --depth 1 https://github.com/ivanshtokov/copilot-kitWhat 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 | $0.00349 | $0.00349 |
| Opus 5 | $0.00175 | $0.00175 |
| Sonnet 5 | $0.00070 | $0.00070 |
| Haiku 4.5 | $0.00035 | $0.00035 |
Grade A, and why
copilot-kit security.instructions.md 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 yesterday.
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.
What it actually says
Security Standards
🎯 Before Any Security-Sensitive Work
READ: .github/skills/vulnerability-scanner/SKILL.md
🔐 OWASP Top 10 Quick Reference
| Risk | Prevention |
|---|---|
| Injection | Parameterized queries, input validation |
| Broken Auth | Strong passwords, MFA, secure sessions |
| Data Exposure | Encryption at rest and transit |
| XXE | Disable DTD processing |
| Access Control | Least privilege, deny by default |
| Misconfiguration | Secure defaults, remove unused features |
| XSS | Output encoding, CSP headers |
| Deserialization | Validate, avoid untrusted data |
| Components | Audit dependencies, keep updated |
| Logging | Monitor, alert, protect logs |
🔑 Authentication
- Hash passwords with bcrypt/argon2
- Use secure session management
- Implement rate limiting
- Support MFA for sensitive actions
📝 Input Validation
// Validate ALL inputs at API boundary
const schema = z.object({
email: z.string().email(),
password: z.string().min(8),
});
const validated = schema.parse(input);
🚫 Never Do
- Store passwords in plain text
- Use
eval()with user input - Expose internal errors
- Trust client-side validation alone
- Hardcode secrets in code
- Log sensitive data
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.
- yesterday First seen · 54 lines · 349 tokens per session scan A 3187a76c6511
copilot-kit security.instructions.md is an instructions file published in the GitHub repository ivanshtokov/copilot-kit (2 stars, last pushed 7mo ago), licensed MIT. It adds 349 tokens to every session, about $0.0017 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.
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