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Show HN: Gambit, an open-source agent harness for building reliable AI agents

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Gambit

Gambit helps you build reliable LLM workflows by composing small, typed “decks”

with clear inputs/outputs and guardrails. Run decks locally, stream traces, and

debug with a built-in UI.

Quickstart

Requirements: Node.js 18+ and OPENROUTER_API_KEY (set OPENROUTER_BASE_URL if

you proxy OpenRouter-style APIs).

Run the CLI directly with npx (no install):

export OPENROUTER_API_KEY=... npx @bolt-foundry/gambit init

Downloads example files (hello decks plus the examples/ gallery) and sets environment variables.

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