Langsmith Data Migration Tool

LangSmith Data Migration Tool

A Python CLI for migrating users and roles, datasets, experiments, annotation queues, project rules, prompts, charts, Engine issues, and Fleet resources between LangSmith instances, plus CSV-driven access sync for a single LangSmith deployment.

Quick Start

# Install (requires uv: https://docs.astral.sh/uv/)
uv tool install "langsmith-data-migration-tool @ https://github.com/langchain-ai/langsmith-data-migration-tool/releases/latest/download/langsmith_data_migration_tool-0.0.83-py3-none-any.whl"

# Set up environment variables
export LANGSMITH_OLD_API_KEY="your_source_api_key"
export LANGSMITH_NEW_API_KEY="your_destination_api_key"

# Test connections
langsmith-migrator test

# Start migrating
langsmith-migrator datasets

Features

• All-in-One Wizard: Interactive migration of all resources (migrate-all)
• Users & Roles: Migrate custom roles, org members, and workspace memberships between instances
• Export Users to CSV: Export active org and workspace members to a members CSV (export-users) that round-trips into the users --members-csv importer
• Single-Instance Access Sync: Apply CSV-driven add/update or authoritative access sync to one LangSmith instance (users --csv ... [--sync]), including multi-row workspace role unionization for custom ABAC roles
• Datasets: Migrate datasets with examples and file attachments
• Experiments: Include experiments, runs, and feedback during dataset migration (datasets --include-experiments) or through migrate-all
• Annotation Queues: Transfer queue configurations
• Project Rules: Copy automation rules with project mapping and optional project creation in interactive flows
• Prompts: Migrate prompts (latest by default, full history with --include-all-commits)
• Charts: Migrate monitoring charts with filter preservation
• Custom Model Pricing: Migrate workspace-custom model price entries (model-pricing). Global built-in p