FabTally Decode is an MCP server with 4 tools an agent can call, among them abi_fetch, decode_calldata, decode_log. It answers at https://decode.fabtally.com/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 24 October 2026, succeeded.
Decode EVM bytes to JSON: event-log decoder, calldata explainer, selector lookup, ABI fetch.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
abi_fetch | PAID $0.002 (x402, USDC on Base). Fetch the verified ABI + metadata for a contract. Give {address, chain}; get the ABI JSON, verification status/source (Sourcify or Blockscout), the callable function/event signatures, and full proxy-impleme Inputs: chain, address, x_payment |
decode_calldata | PAID $0.002 (x402, USDC on Base). Decode a contract function call. Give {chain, to?, data, abi?}; get the 4-byte selector resolved to a function signature (via provided ABI, the verified contract source, or 4byte.directory) plus fully decod Inputs: chain, to, data, abi, x_payment |
decode_log | PAID $0.003 (x402, USDC on Base). FLAGSHIP: decode EVM event LOGS to human-readable JSON. Give {chain, tx_hash} to decode every log in a transaction, OR {chain, address, topics[], data} for a single log; optional {abi}. Returns each event's Inputs: chain, tx_hash, address, topics, data, abi |
selector_lookup | PAID $0.001 (x402, USDC on Base). Resolve a 4-byte function selector (0x + 8 hex) OR a 32-byte event topic hash (0x + 64 hex) to its human-readable signature(s) via 4byte.directory + openchain.xyz. Returns all matches (selectors can collide Inputs: selector, x_payment |
Every block below points at https://decode.fabtally.com/mcp. Pick your client and copy.
claude mcp add --transport http fabtally-decode https://decode.fabtally.com/mcp
{
"mcpServers": {
"fabtally-decode": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://decode.fabtally.com/mcp"]
}
}
}{
"mcpServers": {
"fabtally-decode": {
"url": "https://decode.fabtally.com/mcp"
}
}
}{
"servers": {
"fabtally-decode": {
"type": "http",
"url": "https://decode.fabtally.com/mcp"
}
}
}{
"context_servers": {
"fabtally-decode": {
"url": "https://decode.fabtally.com/mcp"
}
}
}{
"mcpServers": {
"fabtally-decode": {
"serverUrl": "https://decode.fabtally.com/mcp"
}
}
}{
"mcpServers": {
"fabtally-decode": {
"url": "https://decode.fabtally.com/mcp"
}
}
}name: FabTally Decode
version: 0.0.1
schema: v1
mcpServers:
- name: FabTally Decode
type: streamable-http
url: https://decode.fabtally.com/mcp{
"mcpServers": {
"fabtally-decode": {
"httpUrl": "https://decode.fabtally.com/mcp"
}
}
}{
"mcpServers": {
"fabtally-decode": {
"type": "http",
"url": "https://decode.fabtally.com/mcp"
}
}
}{
"mcpServers": {
"fabtally-decode": {
"url": "https://decode.fabtally.com/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fdecode.fabtally.com%2Fmcp&type=streamable_http&id=fabtally-decode&name=FabTally%20Decode
It answered our last check on 24 October 2026 in 130 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
4, as returned by the server's own tools/list on 22 September 2026: abi_fetch, decode_calldata, decode_log, selector_lookup.
It answered our last check on 24 October 2026 in 130 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://decode.fabtally.com/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.zvmzaretsky. Endpoint host: decode.fabtally.com. ARD identifier: urn:air:io.github.zvmzaretsky:mcp:onchain-decode.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.