Security

JWK Generator & Parser

Generate JSON Web Keys (JWK) for RSA, EC (P-256/P-384/P-521/secp256k1), and OKP (Ed25519/Ed448/X25519/X448), or parse an existing JWK to inspect its parameters, thumbprint, and metadata

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/jwk-generator' \
  -H 'Content-Type: application/json' \
  -d '{"mode":"generate","keyType":"rsa","keySize":"2048","curve":"P-256","keyId":"optional, e.g. my-key-2026","publicOnly":false,"jwkInput":"{\"kty\":\"RSA\",\"n\":\"...\",\"e\":\"AQAB\"}"}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/jwk-generator

Parameters

Name	Type	Required	Description
mode	select	No	—
keyType	select	No	—
keySize	select	No	—
curve	select	No	—
keyId	text	No	—
publicOnly	checkbox

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-jwk-generator": {
      "name": "jwk-generator",
      "description": "Generate JSON Web Keys (JWK) for RSA, EC (P-256/P-384/P-521/secp256k1), and OKP (Ed25519/Ed448/X25519/X448), or parse an existing JWK to inspect its parameters, thumbprint, and metadata",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=jwk-generator",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "jwk-generator",
    "arguments": {
  "mode": "generate",
  "keyType": "rsa",
  "keySize": "2048",
  "curve": "P-256",
  "keyId": "optional, e.g. my-key-2026",
  "publicOnly": false,
  "jwkInput": "{\"kty\":\"RSA\",\"n\":\"...\",\"e\":\"AQAB\"}"
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

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