io.github.nirholas/transaction-mcp-server

Ethereum Transaction Builder

Is the Ethereum Transaction Builder MCP server down? Yes. It has given no valid answer since 2026-10-20: crashed on start.

Build and sign Ethereum transactions - EIP-1559, gas estimation, RLP, ERC-20 transfers

crashed on start down since 2026-10-20 · probed 2026-11-14 · unchanged since 2026-10-27

MCP error -32000: Connection closed
AttributeError: 'Server' object has no attribute 'tool'
  File "/work/uv/transaction-mcp-server/lib/python3.12/site-packages

Run it: uvx transaction-mcp-server@1.0.0 (stdio, probed in a container with the network off)
Host: pypi.org
Repository: https://github.com/nirholas/ethereum-wallet-toolkit
Registry: active, updated 2026-01-20 · registry entry

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The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

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Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.

For the publisher

No valid answer since 2026-10-20, in every probe since then.
The process exited on start before it answered initialize. The error output is above.