Pem Decoder

Encoding REST API MCP

Parse PEM certificates, CSRs, and keys in the browser-equivalent decoder. Returns type, DER length, subject, issuer, dates, SAN, and algorithm. Private key bits are not returned.

This page documents the MCP tool findutils:pem_decoder. See the REST reference →

Use in the browser View as Markdown

Call it over MCP

Tool name findutils:pem_decoder · no API keys · 120 requests/min per IP

Claude Code

claude mcp add findutils --transport http https://mcp.findutils.com/

Claude Desktop — claude_desktop_config.json

{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/"
    }
  }
}

Raw JSON-RPC (any MCP client) — verified example

curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "pem_decoder",
      "arguments": {
        "pem": "-----BEGIN CERTIFICATE-----\nMIIB\n-----END CERTIFICATE-----"
      }
    }
  }'

Input schema

Argument	Type	Required	Description
pem	string	yes	One or more PEM blocks including BEGIN and END lines.

Example arguments (verified)

{
  "pem": "-----BEGIN CERTIFICATE-----\nMIIB\n-----END CERTIFICATE-----"
}

Also a REST endpoint

The same tool answers plain HTTP at POST /api/tools/pem-decoder/execute — no key, 60 requests/min.

Open the REST reference for Pem Decoder →

More Encoding tools

Base32 Decode

Decode RFC 4648 base32 back to UTF-8 text.

Base64 Decode

Decode a base64 string back to UTF-8 text.

Base64 Encode

Encode UTF-8 text as a base64 string.

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to text.

Color Convert

Convert between color formats: hex, rgb, hsl, hsv.

Hash Generate

Hash text with MD5, SHA-1, SHA-256, or SHA-512.

Hex Decode

Decode a hexadecimal string back to UTF-8 text.

Hex Encode

Encode UTF-8 text as a hexadecimal string.