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Password Strength Analyzer API

Official registry Other

Password strength scoring with entropy, crack time estimation, common password detection. x402.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (sse)
Claude Code 
claude mcp add --transport sse password-strength-analyzer-api 'https://password-strength.api.klymax402.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "password-strength-analyzer-api": {
            "type": "sse",
            "url": "https://password-strength.api.klymax402.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Password Strength Analyzer API
  2. Quickstart -- MCP
  3. Quickstart -- HTTP (x402)
  4. Tools
  5. Example agent prompts
  6. Payment
  7. Part of klymax402
  8. License

Password Strength Analyzer API

Password strength analyzer with entropy calculation and crack time estimation. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

{
  "mcpServers": {
    "password-strength": {
      "url": "https://password-strength.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl -X POST "https://password-strength.api.klymax402.com/api/check" \
  -H "Content-Type: application/json" \
  -d '{"password":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

ToolMethodPathPriceDescription
security_check_passwordPOST/api/check$0.003Check password strength with entropy and crack time
security_check_password

Use this when you need to evaluate password strength or security. Returns a score 0-100, strength rating (weak/fair/strong/excellent), estimated crack time, entropy bits, and improvement suggestions. Checks against top 1000 common passwords. Do NOT use for hash generation — use crypto_generate_hash. Do NOT use for input validation — use data_validate_json.

Parameters

NameTypeRequiredDescription
passwordstringyesThe password to analyze

Example agent prompts

  • "Evaluate password strength or security"

Payment

  • Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
  • Network: Base L2 (eip155:8453)
  • Asset: USDC
  • Facilitator: Coinbase CDP (primary), PayAI (fallback)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

License

MIT

Frequently asked questions

What is Password Strength Analyzer API?

Password strength scoring with entropy, crack time estimation, common password detection. x402.

How do I install Password Strength Analyzer API?

It runs as a remote server. In Claude Code: claude mcp add --transport sse password-strength-analyzer-api 'https://password-strength.api.klymax402.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Password Strength Analyzer API need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Password Strength Analyzer API open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Password Strength Analyzer API?

It is published by Br0ski777. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.