io.github.zvmzaretsky/onchain-decode

up checked 2026-11-11T06:40:20.235Z

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Publisher-provided title

FabTally Decode

Publisher-provided description

Decode EVM bytes to JSON: event-log decoder, calldata explainer, selector lookup, ABI fetch.

Summary by lookupd

Decodes EVM calldata, event logs, and function selectors into readable JSON and fetches verified contract ABIs; paid per call via x402.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http onchain-decode https://decode.fabtally.com/mcp

Codex, remote (streamable-http)

codex mcp add onchain-decode --url https://decode.fabtally.com/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "onchain-decode": {
      "url": "https://decode.fabtally.com/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (4 tools)

Publisher-provided text

• 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,
• 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
• 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)
• 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 (Sourcif

Details

• Version: 1.0.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 1141 ms
• First indexed: 2026-11-01T10:02:31.679Z
• Last seen in registry: 2026-11-01T10:02:31.679Z
• Repository: https://github.com/zvmzaretsky/onchain-decode-mcp
• Website: https://decode.fabtally.com

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