MCP Server

flatten-mcp MCP Server

io.github.shayaShav/flatten-mcp

Repository Registry

What is the flatten-mcp MCP server?

Flatten Claude Code sessions: keep every prompt and event verbatim, resume at a lower token count.

How to install flatten-mcp

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

ANTHROPIC_API_KEY
secret
Optional. If set, token savings are counted exactly via Anthropic's count_tokens endpoint instead of estimated locally.
FLATTEN_COUNT_MODEL
Optional. Model id used for the exact token count (default: claude-haiku-4-5-20251001).

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "flatten-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "flatten-mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "<YOUR_ANTHROPIC_API_KEY>",
        "FLATTEN_COUNT_MODEL": "<YOUR_FLATTEN_COUNT_MODEL>"
      }
    }
  }
}