Agent skill

Discover Cryptography

Automatically discover cryptography skills when working with encryption, TLS, certificates, PKI, and security

MITAuto-check passedSecurity

Install Discover Cryptography

skills CLI

$ npx skills add rand/cc-polymath --skill discover-cryptography -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install rand/cc-polymath discover-cryptography --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/rand/cc-polymath.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/discover-cryptography .claude/skills/discover-cryptography && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "discover-cryptography" agent skill from https://github.com/rand/cc-polymath/tree/main/skills/discover-cryptography into .claude/skills/discover-cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "discover-cryptography", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/rand/cc-polymath/tree/main/skills/discover-cryptography

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add rand/cc-polymath --skill discover-cryptography -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install rand/cc-polymath discover-cryptography --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rand/cc-polymath.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/discover-cryptography .agents/skills/discover-cryptography && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "discover-cryptography" agent skill from https://github.com/rand/cc-polymath/tree/main/skills/discover-cryptography into .agents/skills/discover-cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "discover-cryptography", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add rand/cc-polymath --skill discover-cryptography -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install rand/cc-polymath discover-cryptography --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rand/cc-polymath.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/discover-cryptography .cursor/skills/discover-cryptography && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "discover-cryptography" agent skill from https://github.com/rand/cc-polymath/tree/main/skills/discover-cryptography into .cursor/skills/discover-cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "discover-cryptography", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/rand/cc-polymath.git --path skills/discover-cryptography

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add rand/cc-polymath --skill discover-cryptography -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install rand/cc-polymath discover-cryptography --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rand/cc-polymath.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/discover-cryptography .gemini/skills/discover-cryptography && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "discover-cryptography" agent skill from https://github.com/rand/cc-polymath/tree/main/skills/discover-cryptography into .gemini/skills/discover-cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "discover-cryptography", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install rand/cc-polymath discover-cryptography

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add rand/cc-polymath --skill discover-cryptography -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/rand/cc-polymath.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/discover-cryptography .github/skills/discover-cryptography && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "discover-cryptography" agent skill from https://github.com/rand/cc-polymath/tree/main/skills/discover-cryptography into .github/skills/discover-cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "discover-cryptography", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add rand/cc-polymath --skill discover-cryptography -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install rand/cc-polymath discover-cryptography --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/rand/cc-polymath.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/discover-cryptography .opencode/skills/discover-cryptography && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "discover-cryptography" agent skill from https://github.com/rand/cc-polymath/tree/main/skills/discover-cryptography into .opencode/skills/discover-cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "discover-cryptography", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: discover-cryptography
GitHub stars: 181
Token cost: ~818 tokens
SKILL.md length: 289 words
Files: 1
Skills in repo: 26
Repo updated: Feb 28, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Automatically discover cryptography skills when working with encryption, TLS, certificates, PKI, and security

Works in 7 steps: pki-fundamentals - PKI, certificate… → tls-configuration - TLS 1.2/1.3 setup,… → ssl-legacy - SSL 2.0/3.0, TLS 1.0/1.1,… → …
Tasks that involve Cryptography
SKILL.md covers When This Skill Activates, Available Skills, Common Workflows and Progressive Loading, plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Discover Cryptography is an agent skill from rand/cc-polymath. Automatically discover cryptography skills when working with encryption, TLS, certificates, PKI, and security

Its SKILL.md is about 820 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts. Compatibility notes: Designed for Claude Code. Compatible with any agent supporting the Agent Skills format.

It sits in Security, covering Cryptography. The repository describes itself as: Claude Code skills and workflows, optimized for context-efficiency and skill quality. Skills ranging from cloud infrastructure to design to advanced maths. The licence is MIT.

When your agent uses it

Tasks that involve Cryptography

Example prompts

“/discover-cryptography”

Requirements

Compatibility (from SKILL.md): Designed for Claude Code. Compatible with any agent supporting the Agent Skills format.

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

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

What it can do on your machine

Read from SKILL.md and the folder at commit baa2df1. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Compatibility
Designed for Claude Code. Compatible with any agent supporting the Agent Skills format.
From compatibility in the SKILL.md frontmatter.

Context cost

Discover Cryptography loads about 818 tokens when it runs. Until then it costs about 33 tokens; SKILL.md has 289 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~33
When it runs · the whole SKILL.md, loaded when a task matches: ~818

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from rand/cc-polymath at commit baa2df1, republished under its MIT licence (© rand). 289 words, ~818 tokens.

Download SKILL.mdSave it as .claude/skills/discover-cryptography/SKILL.md (or your agent's skills folder).

name: discover-cryptography
description: Automatically discover cryptography skills when working with encryption, TLS, certificates, PKI, and security
compatibility: Designed for Claude Code. Compatible with any agent supporting the Agent Skills format.
license: MIT
metadata.author: rand
metadata.version: 4.0

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

PKI → Certificate management → Debugging

Read ../cryptography/pki-fundamentals.md Read ../cryptography/certificate-management.md

Legacy Migration

Understand legacy → Modern TLS → Migration

Read ../cryptography/ssl-legacy.md Read ../cryptography/tls-configuration.md Read ../cryptography/certificate-management.md

Progressive Loading

This gateway skill enables progressive loading:

Level 1: Gateway loads automatically (you're here now)
Level 2: Load category INDEX.md for full overview
Level 3: Load specific skills as needed

Usage Instructions

Auto-activation: This skill loads automatically when Claude Code detects cryptography work
Browse skills: Run Read ../cryptography/INDEX.md for full category overview
Load specific skills: Use bash commands above to load individual skills

Next Steps: Run Read ../cryptography/INDEX.md to see full category details.

Files

Just SKILL.md in skills/discover-cryptography of rand/cc-polymath.

Open the folder on GitHubat commit baa2df1

Compare with similar skills

Discover Cryptography next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Discover Cryptography compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Discover Cryptography this skillrand/cc-polymath	181	—	~818	Automated safety check: Pass	MIT	7 mo ago
Bom Explorecdxgen/cdxgen	1.1k	—	~1.2k	Automated safety check: Pass	Apache-2.0	yesterday
Webcrypt MCPputervision/state-memory-mcp	111	—	~847	Automated safety check: Pass	MIT	4 days ago
Crypto Analysishypnguyen1209/offensive-claude	386	—	~2.2k	Automated safety check: Pass	MIT	9 days ago
Security Reviewvalory-xyz/open-autonomy	129	—	~11k	Automated safety check: Notes	Apache-2.0	23 days ago
Hashcat Password Recovery WorkflowAgentSecOps/SecOpsAgentKit	219	1 repos	~3.3k	Automated safety check: Notes	Custom licence	5 mo ago

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Questions about Discover Cryptography

What does Discover Cryptography do?

Automatically discover cryptography skills when working with encryption, TLS, certificates, PKI, and security. Discover Cryptography is an agent skill from rand/cc-polymath.

When should I use Discover Cryptography?

Discover Cryptography fits situations like: tasks that involve Cryptography.

How do I install Discover Cryptography in Claude Code?

Run `npx skills add rand/cc-polymath --skill discover-cryptography -a claude-code`. Or copy the skill folder (skills/discover-cryptography in rand/cc-polymath) into .claude/skills/discover-cryptography in your project. Claude Code loads it when a task matches its description.

How do I install Discover Cryptography in Codex?

Run `npx skills add rand/cc-polymath --skill discover-cryptography -a codex`. Or copy the skill folder (skills/discover-cryptography in rand/cc-polymath) into .agents/skills/discover-cryptography in your project. Codex loads it when a task matches its description.

Can I use Discover Cryptography in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add rand/cc-polymath --skill discover-cryptography -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/discover-cryptography, .gemini/skills/discover-cryptography, .github/skills/discover-cryptography and .opencode/skills/discover-cryptography in your project.

What does Discover Cryptography need to run?

SKILL.md names no scripts, command-line tools or credentials: Discover Cryptography is instructions for the agent only. Compatibility (from SKILL.md): Designed for Claude Code. Compatible with any agent supporting the Agent Skills format..

Does Discover Cryptography access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Discover Cryptography safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Discover Cryptography use?

Discover Cryptography is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Discover Cryptography use?

About 818 tokens (SKILL.md is roughly 3.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Discover Cryptography?

Skills that share tags, products or a category with Discover Cryptography: Bom Explore (cdxgen/cdxgen, 1.1k stars), Webcrypt MCP (putervision/state-memory-mcp, 111 stars), Crypto Analysis (hypnguyen1209/offensive-claude, 386 stars) and Security Review (valory-xyz/open-autonomy, 129 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Discover Cryptography?

rand (a GitHub user) maintains it in rand/cc-polymath, which has 181 GitHub stars. The repository holds 26 skills in this directory. The repository was last updated on February 28, 2026.

Source: rand/cc-polymath on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Discover Cryptography

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Compatibility

Context cost

Safety

SKILL.md

Cryptography Skills Discovery

When This Skill Activates

Available Skills

Quick Reference

Load Full Category Details

Load Specific Skills

Common Workflows

Setting Up HTTPS

PKI basics → TLS config → Certificate management

Understanding Encryption

Basics → Best practices → Specific implementation

Certificate Troubleshooting

PKI → Certificate management → Debugging

Legacy Migration

Understand legacy → Modern TLS → Migration

Progressive Loading

Usage Instructions

Files

Compare with similar skills

Similar skills

More from rand/cc-polymath

Related

Questions about Discover Cryptography