# Send Hash Toolkit to your agent
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
## Fast path
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
## Suggested prompts
### New install

```text
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
```
### Upgrade existing

```text
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
```
## Machine-readable fields
```json
{
  "schemaVersion": "1.0",
  "item": {
    "slug": "hash-toolkit",
    "name": "Hash Toolkit",
    "source": "tencent",
    "type": "skill",
    "category": "开发工具",
    "sourceUrl": "https://clawhub.ai/raghulpasupathi/hash-toolkit",
    "canonicalUrl": "https://clawhub.ai/raghulpasupathi/hash-toolkit",
    "targetPlatform": "OpenClaw"
  },
  "install": {
    "downloadUrl": "/downloads/hash-toolkit",
    "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=hash-toolkit",
    "sourcePlatform": "tencent",
    "targetPlatform": "OpenClaw",
    "packageFormat": "ZIP package",
    "primaryDoc": "SKILL.md",
    "includedAssets": [
      "SKILL.md"
    ],
    "downloadMode": "redirect",
    "sourceHealth": {
      "source": "tencent",
      "status": "healthy",
      "reason": "direct_download_ok",
      "recommendedAction": "download",
      "checkedAt": "2026-04-30T16:55:25.780Z",
      "expiresAt": "2026-05-07T16:55:25.780Z",
      "httpStatus": 200,
      "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=network",
      "contentType": "application/zip",
      "probeMethod": "head",
      "details": {
        "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=network",
        "contentDisposition": "attachment; filename=\"network-1.0.0.zip\"",
        "redirectLocation": null,
        "bodySnippet": null
      },
      "scope": "source",
      "summary": "Source download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this source.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/hash-toolkit"
    },
    "validation": {
      "installChecklist": [
        "Use the Yavira download entry.",
        "Review SKILL.md after the package is downloaded.",
        "Confirm the extracted package contains the expected setup assets."
      ],
      "postInstallChecks": [
        "Confirm the extracted package includes the expected docs or setup files.",
        "Validate the skill or prompts are available in your target agent workspace.",
        "Capture any manual follow-up steps the agent could not complete."
      ]
    }
  },
  "links": {
    "detailUrl": "https://openagent3.xyz/skills/hash-toolkit",
    "downloadUrl": "https://openagent3.xyz/downloads/hash-toolkit",
    "agentUrl": "https://openagent3.xyz/skills/hash-toolkit/agent",
    "manifestUrl": "https://openagent3.xyz/skills/hash-toolkit/agent.json",
    "briefUrl": "https://openagent3.xyz/skills/hash-toolkit/agent.md"
  }
}
```
## Documentation

### Hash Toolkit

Multi-algorithm hashing for content deduplication and verification.

### Implementation

const crypto = require('crypto');

/**
 * Generate hash using specified algorithm
 * @param {string|Buffer} content - Content to hash
 * @param {string} algorithm - Hash algorithm
 * @returns {string} Hash string
 */
function generateHash(content, algorithm = 'sha256') {
  const hash = crypto.createHash(algorithm);
  hash.update(Buffer.isBuffer(content) ? content : String(content));
  return hash.digest('hex');
}

/**
 * Generate multiple hashes at once
 */
function generateMultipleHashes(content) {
  return {
    md5: generateHash(content, 'md5'),
    sha1: generateHash(content, 'sha1'),
    sha256: generateHash(content, 'sha256'),
    sha512: generateHash(content, 'sha512').substring(0, 32) // Truncated
  };
}

/**
 * Generate perceptual hash (for images/content similarity)
 * Simplified implementation
 */
function generatePerceptualHash(content) {
  // Simplified perceptual hash
  // In production: use actual perceptual hashing algorithm
  const normalized = String(content).toLowerCase().replace(/\\s+/g, ' ');
  return generateHash(normalized, 'sha256').substring(0, 16);
}

/**
 * Check if content is duplicate based on hash
 */
function checkDuplicate(contentHash, knownHashes) {
  return {
    isDuplicate: knownHashes.has(contentHash),
    hash: contentHash,
    algorithm: 'sha256'
  };
}

/**
 * Calculate similarity between two hashes
 * (for perceptual hashes)
 */
function calculateHashSimilarity(hash1, hash2) {
  if (hash1.length !== hash2.length) return 0;

  let matches = 0;
  for (let i = 0; i < hash1.length; i++) {
    if (hash1[i] === hash2[i]) matches++;
  }

  return matches / hash1.length;
}

// Export for OpenClaw
module.exports = {
  generateHash,
  generateMultipleHashes,
  generatePerceptualHash,
  checkDuplicate,
  calculateHashSimilarity
};

### Usage

// Generate SHA256 hash
const hash = skills.hashToolkit.generateHash(content, 'sha256');

// Generate multiple hashes
const hashes = skills.hashToolkit.generateMultipleHashes(content);
console.log(hashes.md5, hashes.sha256);

// Check for duplicates
const knownHashes = new Set(['abc123...']);
const result = skills.hashToolkit.checkDuplicate(hash, knownHashes);
if (result.isDuplicate) {
  console.log('Duplicate content detected');
}

// Perceptual hash for similarity
const phash = skills.hashToolkit.generatePerceptualHash(imageData);

### Configuration

{
  "defaultAlgorithm": "sha256",
  "enablePerceptual": true
}
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: raghulpasupathi
- Version: 1.0.0
## Source health
- Status: healthy
- Source download looks usable.
- Yavira can redirect you to the upstream package for this source.
- Health scope: source
- Reason: direct_download_ok
- Checked at: 2026-04-30T16:55:25.780Z
- Expires at: 2026-05-07T16:55:25.780Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/hash-toolkit)
- [Send to Agent page](https://openagent3.xyz/skills/hash-toolkit/agent)
- [JSON manifest](https://openagent3.xyz/skills/hash-toolkit/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/hash-toolkit/agent.md)
- [Download page](https://openagent3.xyz/downloads/hash-toolkit)