The DecisionNode MCP server: the decision engine's calibrated yes-or-no, choice, scale, number, point and box judgments as tools for AI agents.
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# DecisionNode MCP server [DecisionNode](https://decisionnode.com) is a decision engine: send it text, JSON or images with a question, and it answers with calibrated probabilities. DecisionNode's judgments as tools for AI agents. An agent asks a narrow question about a piece of content (is this claim supported, which team should take this ticket, how urgent is it, how many line items does the invoice list, where in the photo is the damaged package) and gets a calibrated answer back in one tool call. Every tool call is a DecisionNode API request made with your own API key. The server stores no key, state, question or answer. ## Install You need a DecisionNode API key and [uv](https://docs.astral.sh/uv/). The server runs on your machine and your MCP client starts it over stdio: ```sh uvx bynn-decisionnode-mcp ``` Before the package's first release on PyPI, install it from this repository instead: ```sh uvx --from git+https://github.com/Bynn-Intelligence/decision-node-mcp-server bynn-decisionnode-mcp ``` In the client setups below, the git form replaces `bynn-decisionnode-mcp` with `--from git+https://github.com/Bynn-Intelligence/decision-node-mcp-server bynn-decisionnode-mcp`. ### Claude Code ```sh claude mcp add decisionnode -e DECISIONNODE_API_KEY=<key> -- uvx bynn-decisionnode-mcp ``` ### Claude Desktop Add the server to `claude_desktop_config.json` (Settings, Developer, Edit Config) and restart Claude Desktop: ```json { "mcpServers": { "decisionnode": { "command": "uvx", "args": ["bynn-decisionnode-mcp"], "env": { "DECISIONNODE_API_KEY": "<key>" } } } } ``` ### Other MCP clients Cursor, Windsurf and other clients configured by a JSON file take the same entry under `mcpServers`; VS Code takes it under `servers`. Any client that launches a server over stdio works: the command is `uvx`, the argument is `bynn-decisionnode-mcp`, and the key goes in the server's environment as `DECISIONNODE_API_KEY`. The server name (`decis…
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