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/rand/cc-polymath/discover-cryptographynpx skills add rand/cc-polymath --skill discover-cryptographygit clone --depth 1 https://github.com/rand/cc-polymathWhat 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 | $0.00024 | $0.00744 |
| Opus 5 | $0.00012 | $0.00372 |
| Sonnet 5 | $0.00005 | $0.00149 |
| Haiku 4.5 | $0.00002 | $0.00074 |
Grade A, and why
discover-cryptography 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.
How it starts
The opening of the file, as written. The whole thing — 110 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cryptography Skills Discovery
Provides automatic access to comprehensive cryptography and security skills.
When This Skill Activates
This skill auto-activates when you're working with:
- TLS, SSL, mTLS
- Certificates and PKI
- Encryption and decryption
- Hashing and signing
- Key management
- HTTPS configuration
- Certificate authorities
- Cryptographic algorithms
- Security best practices
Available Skills
Quick Reference
The Cryptography category contains 7 skills:
- pki-fundamentals - PKI, certificate authorities, X.509, trust chains
- tls-configuration - TLS 1.2/1.3 setup, cipher suites, server config
- ssl-legacy - SSL 2.0/3.0, TLS 1.0/1.1, deprecation, migration
- sni-routing - Server Name Indication, multi-domain TLS hosting
- certificate-management - Certificate lifecycle, Let's Encrypt, automation
- cryptography-basics - Symmetric/asymmetric encryption, hashing, signing
- crypto-best-practices - Security patterns, common mistakes, anti-patterns
Load Full Category Details
For complete descriptions and workflows:
Read ../cryptography/INDEX.md
This loads the full Cryptography category index with:
- Detailed skill descriptions
- Usage triggers for each skill
- Common workflow combinations
- Cross-references to related skills
Load Specific Skills
Load individual skills as needed:
Read ../cryptography/pki-fundamentals.md Read ../cryptography/tls-configuration.md Read ../cryptography/certificate-management.md Read ../cryptography/cryptography-basics.md
Common Workflows
Setting Up HTTPS
PKI basics → TLS config → Certificate management
Read ../cryptography/pki-fundamentals.md Read ../cryptography/tls-configuration.md Read ../cryptography/certificate-management.md
Understanding Encryption
Basics → Best practices → Specific implementation
Read ../cryptography/cryptography-basics.md Read ../cryptography/crypto-best-practices.md Read ../cryptography/tls-configuration.md
Certificate Troubleshooting
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 · 110 lines · 24 tokens per session scan A 9bd0221a0add
discover-cryptography is a skill published in the GitHub repository rand/cc-polymath (136 stars, last pushed 6mo ago), licensed MIT. It adds 24 tokens to every session and 744 once invoked, about $0.0001 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.
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