Paddock vs GPT55 x402 MCP Gateway
A side-by-side look at the Paddock and GPT55 x402 MCP Gateway MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
P
PaddockDeveloper Tools · Remote HTTP/SSEPre-payment verification for AI agents.37FairAuth: not declaredG
GPT55 x402 MCP GatewayDeveloper Tools · Remote HTTP/SSEGPT-5.6 Luna Standard paid API via x402: $0.00293 per request (2930 atomic) on Base USDC (eip155:8453), with browser-wallet checkout and an agent fallback client. Start at https://gpt55.558686.xyz/x402/service; POST https://gpt55.558686.xyz/v1/chat/completions/standard.56GoodAuth: otherVerdict: choose Paddock for developer tools work over a hosted endpoint; choose GPT55 x402 MCP Gateway for developer tools over a hosted endpoint. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
PChoose Paddock when
- You need dedicated capabilities in the Developer Tools domain.
- You prefer a remote HTTP/SSE transport.
GChoose GPT55 x402 MCP Gateway when
- You need dedicated capabilities in the Developer Tools domain.
- You prefer a remote HTTP/SSE transport.
- Its auth model fits you: other.
- You want tools like
gpt55_x402_ping, gpt55_balance_topup, gpt55_balance_metered_chat_completion.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | P Paddock | G GPT55 x402 MCP Gateway |
|---|---|---|
| Category | Developer Tools | Developer Tools |
| Quality signal | 37/100 · Fair | 56/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Remote HTTP/SSE | Remote HTTP/SSE |
| Auth | Not declared | other |
| Pricing | Not declared | Paid service |
| Required env vars | None listed | None listed |
| Verified owner |
Tools & capabilities
Paddock tools
No tool names declared yet. Check the project README from the listing page.
GPT55 x402 MCP Gateway tools 214
gpt55_x402_pingLow-cost x402 payment proof endpoint with no upstream model call. Pay $0.002 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.gpt55_balance_topupTop up an AI Hub prepaid balance account with x402 exact USDC before using balance-metered GPT-5.5 chat. Pay $0.005 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.gpt55_balance_metered_chat_completionOpenAI-compatible GPT-5.5 chat that debits a persistent prepaid balance ledger after actual upstream usage is known using the read-only sub2api formula. Pay usage-metered balance debit per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.chat_gpt_5_6_soulGPT-5.6 Soul flagship chat for advanced reasoning, production work, code, and structured responses at GPT-5.5-matched pricing. Pay $0.099995 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.chat_gpt_5_6_terraGPT-5.6 Terra chat on the independently verified upstream gpt-5.6-terra model. Pay $0.049998 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.chat_gpt_5_5GPT-5.5 chat for stronger reasoning, production work, code, and structured responses. Pay $0.019999 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.gpt55_x402_buyer_payment_execution_runbookPremium GPT-5.5 x402 buyer execution agent that turns a paid route, budget cap, runtime, payTo/network expectation, and receipt policy into runnable Node, Python, Bash, MCP, and Flowise payment execution assets. The service never asks for private keys and never pays the target endpoint. Pay $4.90 per request with x402 exact USDC on Base or Solana when advertised. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Paddock
{
"mcpServers": {
"paddock": {
"url": "https://paddock.finance/api/mcp/mcp"
}
}
}
GPT55 x402 MCP Gateway
{
"mcpServers": {
"gpt55-x402-mcp-gateway": {
"url": "https://gpt55.558686.xyz/mcp"
}
}
}
Frequently asked questions
Paddock is categorized under Developer Tools and uses a remote HTTP/SSE transport. GPT55 x402 MCP Gateway belongs to Developer Tools and uses a remote HTTP/SSE transport. Pick Paddock for developer tools work and GPT55 x402 MCP Gateway for developer tools.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Paddock has no declared pricing — check the project's own site. GPT55 x402 MCP Gateway is listed as a paid service. Auth: other. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add paddock and gpt55-x402-mcp-gateway as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Paddock has a quality signal of 37/100 (Fair) with 0 views, 0 installs and 0 GitHub stars. GPT55 x402 MCP Gateway has 56/100 (Good) with 2 views, 0 installs and 0 GitHub stars.
