Password Strength Analyzer API

io.github.Br0ski777Published by GitHub account Br0ski777v1.1.0Updated Nov 2, 2026

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

VerifiedSSEWeb executableFinanceSecurity & Monitoring

Overview

AI-generated overview

Remote MCP endpoint that scores password strength with entropy, crack-time estimates and common-password checks, paid per call via x402.

What you can do
  • Check a password's strength: returns a 0-100 score, a weak/fair/strong/excellent rating, estimated crack time, entropy bits and improvement suggestions.
  • Compare the submitted password against a list of the top 1000 common passwords.
  • No other tools are listed; the README points to separate services for hash generation and JSON validation.
When to use it
Useful when an assistant needs to evaluate how strong a password is and explain the result, for example in security reviews or user guidance. It is a single-purpose paid endpoint, so it only makes sense if you already have an x402-capable client and wallet.
Requirements
A remote MCP endpoint added by URL; no local package, API key or signup. Payment is required per call through the x402 protocol in USDC on Base L2, so an x402-aware client and a funded wallet are needed. Network access to the provider's domain.
Before you install
Every call costs about $0.003 in USDC on Base, so an agent can spend money automatically. The password you submit is sent to a third-party server for analysis, which is risky for real credentials; prefer test or sample passwords. Payment is handled by Coinbase CDP and PayAI facilitators.

Installation

In SourceWeft

  1. Open Password Strength Analyzer API in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via SSE. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.Br0ski777%2Fpassword-strength/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

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

README

Password Strength Analyzer API

[MCP Server] [x402] [License: MIT]

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.):

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

Quickstart -- HTTP (x402)

bash
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

Source: README.md at commit 2cebf1f

Tools

0
SourceWeft has not read this server's tools yet.

Version history

1
  1. v1.1.0LatestSep 16, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declaredRequired10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts