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Base64 Codec API

br0ski777/base64-codec-x402

This is a straightforward utility server that handles base64 encoding and decoding, including URL-safe variants. It runs as a remote service over SSE transport and uses the x402 micropayment system, so you'll pay per operation. The GitHub repo is pretty bare, just showing the TypeScript source structure without much documentation. Reach for this if you need Claude to encode or decode base64 strings on the fly and you're already set up with x402 payments. It's a simple codec service, nothing more. The remote API endpoint suggests it's hosted and ready to use rather than something you run locally.

tool
1
transport
SSE
last updated
May 16, 2026
View on GitHub

Tools

1 tools

Public tool metadata for what this MCP can expose to an agent.

utility_encode_base64Encode or decode base64 data

Encode or decode base64 data

No parameter schema in public metadata yet.

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Readme

Base64 Codec API

MCP Server x402 License: MIT

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.

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": {
    "base64-codec": {
      "url": "https://base64-codec.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

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

View the full README on GitHub

Details

Repository
github.com/br0ski777/base64-codec-x402
Website
github.com/Br0ski777/base64-codec-x402
Transport
SSE
Registry
MCP registry, active

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