io.github.base76-research-lab/token-compressor

Is the io.github.base76-research-lab/token-compressor MCP server down? No. It is up and needs env, probed 2026-10-26.

Compress prompts 40-60% using local LLM + embedding validation. Preserves all conditionals.

needs env probed 2026-11-14 · unchanged since 2026-10-26

MCP error -32000: Connection closed
AttributeError: 'Server' object has no attribute 'list_tools'
  File "/work/uv/token-compressor-mcp/lib/python3.12/site-pack

Run it: uvx token-compressor-mcp@0.1.1 (stdio, probed in a container with the network off)
Host: pypi.org
Repository: https://github.com/base76-research-lab/token-compressor
Registry: active, updated 2026-03-03 · registry entry

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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

The server exits because an environment variable is missing. The probe starts the package without secrets. A server that starts without secrets and asks for them on the first tool call is measured.

The cause and the fix, with the code before and after: AttributeError: 'Server' object has no attribute 'list_tools'