Gulltoppr MCP MCP server

Gulltoppr is a non-custodial MCP server that resolves usable ABIs for any EVM contract address, including unverified ones via decompilation. It enables agents to read contract state, simulate transactions, and prepare unsigned transactions with provenance data, ensuring the user retains control of signing keys.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by Gulltoppr

MCP endpoint (Streamable HTTP)

https://mcp.gulltoppr.dev/mcp

Vendor documentation

What you can do with it

Resolve ABI for unverified EVM contracts
Simulate contract interactions
Prepare unsigned transactions
Read contract state

Tools advertised by the last live check:

list_chains
runtime_metrics
lookup_selector
registry_stats
export_registry
resolve_abi
read_contract
encode_call
simulate
prepare_tx
decode_tx
resolve_name

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http gulltoppr-mcp https://mcp.gulltoppr.dev/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add gulltoppr-mcp --url https://mcp.gulltoppr.dev/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable gulltoppr-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "gulltoppr-mcp": {
      "url": "https://mcp.gulltoppr.dev/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "gulltoppr-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.gulltoppr.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start gulltoppr-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "gulltoppr-mcp": {
      "type": "http",
      "url": "https://mcp.gulltoppr.dev/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http gulltoppr-mcp https://mcp.gulltoppr.dev/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "gulltoppr-mcp": {
      "url": "https://mcp.gulltoppr.dev/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "gulltoppr-mcp": {
      "serverUrl": "https://mcp.gulltoppr.dev/mcp"
    }
  }
}

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