MCP server

🐴 Gulltoppr

io.github.portdeveloper/gulltoppr

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

Resolve any EVM contract ABI (even unverified, via decompilation), read, simulate, prepare txs.

Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

12

Token cost

About 3,135 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.gulltoppr]
url = "https://mcp.gulltoppr.dev/mcp"

Gemini CLI

{"mcpServers":{"gulltoppr":{"httpUrl":"https://mcp.gulltoppr.dev/mcp"}}}

Cursor

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

VS Code

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

Antigravity

agy mcp add gulltoppr https://mcp.gulltoppr.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"gulltoppr","server_url":"https://mcp.gulltoppr.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"gulltoppr","server_url":"https://mcp.gulltoppr.dev/mcp"}

Tools

• decode_tx ~258 tokens
  Decode what a transaction did: delegated heimdall decode plus `decoded_call` from the resolved target ABI when available. Prefer `decoded_call` for typed function/arg names, and read its provenance.
• encode_call ~338 tokens
  Encode a function call to calldata (0x…) without sending anything.
• export_registry ~74 tokens
  Return the CC0 selector commons as NDJSON. This can be large; prefer lookup_selector for normal agent workflows.
• list_chains ~192 tokens
  List viem-backed chain aliases and ids. Use filters to find testnets, default-RPC chains, or a named chain before resolving contracts.
• lookup_selector ~138 tokens
  Lookup gulltoppr-proven signatures for a 4-byte function/error selector or 32-byte event topic0. Prefer these over public 4byte guesses.
• prepare_tx ~514 tokens
  Prepare a contract WRITE for the user to sign. Returns an UNSIGNED transaction, its simulation, a human-readable summary, safety metadata, warnings, a configured signing deeplink, and an EIP-1193 wallet request when signing is recommended. IMPORTANT: this tool NEVER signs or broadcasts. Present the
• read_contract ~315 tokens
  Call a view/pure function and get the decoded result. No wallet, no cost. Rejects state-mutating functions.
• registry_stats ~62 tokens
  Read selector commons counts by proof grade and bytecode-match index size.
• resolve_abi ~519 tokens
  Resolve a contract's interface from chain + address via a fallback ladder (Etherscan → Sourcify → proxy → heimdall decompile → 4byte). Returns a compact capability manifest (read vs write functions, the 'buttons'), proxy chain, token metadata, and PROVENANCE. ALWAYS read `provenance`: a `decompiled`
• resolve_name ~189 tokens
  Resolve an ENS/Basename to an address, or an address to its primary ENS/Basename. Pass chain=base for Basenames.
• runtime_metrics ~67 tokens
  Read process-local resolver/rung/RPC counters for smoke checks and reliability dashboards.
• simulate ~469 tokens
  Simulate a call and return success, gas, decoded return, and best-effort state diff / asset changes / logs. Provide a high-level call (address + function + args) or raw (to + data), never both.

Browse

• GitHub tools
• Etherscan tools
• GitHub and code hosting

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