# Copilot Ld Copilot Ld Libsecret

> libsecret Skill

- Skill: `tomevault-io/copilot-ld-copilot-ld-libsecret` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/copilot-ld-copilot-ld-libsecret`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/copilot-ld-copilot-ld-libsecret/raw
- Safety review: pending (external: skill-scanner PASS, skillspector CAUTION)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/copilot-ld-copilot-ld-libsecret

---


# 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.

---
> Converted and distributed by [TomeVault](https://tomevault.io/claim/copilot-ld) — claim your Tome and manage your conversions.
<!-- tomevault:4.0:skill_md:2026-04-13 -->