# genpark-nonce-replay-attack-guard-skill

> genpark-nonce-replay-attack-guard-skill — alpha-park-genpark-nonce-replay-attack-guard-skill. Use this tool when you need to prevent replay attacks and duplicate API requests, as it provides a sliding-window nonce ledger to detect and invalidate repeated agent API requests and token reflections, ensuring secure communication. It solves problems related to API security and authentication, particularly in scenarios where token reuse or request duplication can compromise system integrity. This skill takes in API requests and token reflections as inputs and outputs validated or invalidated requests based on its nonce ledger analysis.

Canonical page: https://skillsregistry.net/skills/alpha-park-genpark-nonce-replay-attack-guard-skill  
JSON: https://api.skillsregistry.net/v1/skills/alpha-park-genpark-nonce-replay-attack-guard-skill

## Description

Sliding-window nonce ledger and replay attack detector invalidating duplicated agent API requests and token reflections.

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** MIT
- **Updated:** 2026-09-28

## Source

- **Source listing:** [GitHub](https://github.com/Alpha-Park/genpark-nonce-replay-attack-guard-skill)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "alpha-park-genpark-nonce-replay-attack-guard-skill"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/alpha-park-genpark-nonce-replay-attack-guard-skill` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/alpha-park-genpark-nonce-replay-attack-guard-skill/pull`

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