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MutagenT Platform

MutagenT is an AI Observability & Prompt Optimization Platform that helps you build better AI applications through systematic prompt management, evaluation, and optimization. It is CLI-first and AI-native — designed for both developers and AI coding agents (Claude Code, Cursor, etc.).
@mutagent/cli v0.1.30 · @mutagent/sdk v0.2.65 — Install the CLI to get started, or use the SDK directly in your TypeScript projects.

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What MutagenT Does

Trace LLM Calls

Collect traces from LangChain, LangGraph, Vercel AI, and OpenAI with one-line integrations

Manage Prompts

Version-controlled prompt libraries with template variables, datasets, and evaluation criteria

Evaluate Quality

Run evaluations with G-Eval, semantic similarity, and custom metrics against your datasets

Optimize Automatically

Automated prompt optimization through AI-driven mutation and evaluation cycles

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How to Use MutagenT

1

Install the CLI

Install the MutagenT CLI globally with your preferred package manager.
bun add -g @mutagent/cli
2

Authenticate

Log in to your MutagenT account. The CLI supports browser OAuth, API keys, and environment variables.
mutagent auth login
For CI/CD or AI agents, use an API key directly:
export MUTAGENT_API_KEY=<your-key>
3

Integrate Your Framework

Generate framework-specific integration code with a single command.
mutagent integrate <framework>
Supported frameworks: langchain, langgraph, vercel-ai, openai
4

Observe and Optimize

View traces, manage prompts, and run optimizations from the CLI or the MutagenT Dashboard.
mutagent prompts list
mutagent traces list
mutagent prompts optimize start <prompt-id> --dataset <dataset-id>
Add --json to any command for machine-readable output (useful for AI agents and CI pipelines).

CLI

Install and use the MutagenT CLI

Integrations

Connect your LLM framework

Platform

Explore traces, prompts, and evaluations