Agent skill

libsecret

libsecret - Secret generation and environment utilities. generateSecret creates cryptographic random secrets. generateSecretB64 creates base64url secrets. createJwt signs HS256 JSON Web Tokens. getEnvVar and setEnvVar manage .env files. hashValues creates deterministic hashes. Use for credential management, JWT creation, and environment configuration.

View SKILL.md on GitHub Repository
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Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/libsecret

SKILL.md

libsecret Skill

When to Use

  • Generating cryptographic secrets for APIs
  • Creating and signing JWTs
  • Managing .env file variables
  • Creating deterministic hashes from values

Key Concepts

Secret generation: Cryptographically secure random string generation for API keys and tokens.

JWT creation: HS256-signed JSON Web Tokens for authentication.

Environment management: Read/write .env files programmatically.

Usage Patterns

Pattern 1: Generate secrets

javascript
import { generateSecret, generateSecretB64 } from "@copilot-ld/libsecret";

const apiKey = generateSecret(); // hex string
const token = generateSecretB64(); // base64url string

Pattern 2: Manage .env variables

javascript
import { getEnvVar, setEnvVar } from "@copilot-ld/libsecret";

await setEnvVar(".env", "API_SECRET", secret);
const value = await getEnvVar(".env", "API_SECRET");

Pattern 3: Create JWT

javascript
import { createJwt } from "@copilot-ld/libsecret";

const jwt = createJwt({ userId: "123" }, secret, { expiresIn: "1h" });

Integration

Used during setup scripts and initialization. Called by scripts/env-secrets.js.

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