Base64 Codec API
Encode text to base64 or decode base64 to text. Supports standard and URL-safe variants with metadata. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Power your agent
The publisher's own URL. Not a PlugMCP endpoint.
Host a copy with our keys and logs.
https://base64-codec.api.klymax402.com/mcpThe Claude button above opens Claude with the name and URL filled in. You still confirm it there.
claude mcp add --transport http io.github.br0ski777-base64-codec https://base64-codec.api.klymax402.com/mcpRun in a terminal.
{ "mcpServers": { "io.github.br0ski777-base64-codec": { "command": "npx", "args": [ "-y", "mcp-remote", "https://base64-codec.api.klymax402.com/mcp" ] } }}claude_desktop_config.json
Remote URL or a command on your machine? How the two installs differ
Run on PlugMCP
A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.
LaunchFrom the publisher
Encode text to base64 or decode base64 to text. Supports standard and URL-safe variants with metadata. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Encode/decode base64 and URL-safe base64. x402 micropayment.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"base64-codec": {
"url": "https://base64-codec.api.klymax402.com/mcp"
}
}
}
curl -X POST "https://base64-codec.api.klymax402.com/api/encode" \
-H "Content-Type: application/json" \
-d '{"data":"..."}'
# -> 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.
utility_encode_base64Use this when you need to encode text to base64 or decode base64 back to plaintext. Returns the result string with encoding metadata.
Parameters
Example response:
{"result":"SGVsbG8gV29ybGQ=","action":"encode","inputLength":11,"outputLength":16,"urlSafe":false}
When to use: embedding binary data in JSON, preparing email attachments (MIME), or decoding base64 tokens from APIs. Use this BEFORE sending data through channels that only support ASCII.
Not for: hashing (use crypto_generate_hash), JWT decoding (use security_decode_jwt), URL slug creation (use text_generate_slug).
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
MIT
ยฉ 2026 MCP Directory.
Encode/decode base64 and URL-safe base64. x402 micropayment.
{ "mcpServers": { "io.github.br0ski777-base64-codec": { "url": "https://base64-codec.api.klymax402.com/mcp", "headers": {} } }}Tools
No tool list yet. Remote servers get one after the first health check.
FAQ
Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.
No required environment variable is listed on this record.
Base64 Codec API is reached over HTTP.
Last checked 2026-11-08. Encode/decode base64 and URL-safe base64. x402 micropayment.