whereismyai
Seahaven
Seahaven is a Python framework for building synthetic worlds for AI agent evaluations and reinforcement learning.
Seahaven is a Python framework that builds synthetic worlds for AI agent evaluations and reinforcement learning. It addresses the need for thousands of isolated agent runs by providing working copies of tools and databases. Each instance runs independently with its own SQLite database, supporting parallel instances, reproducibility, and change logs. Developers write tables and tools while Seahaven handles serving and parallelization. It integrates with OpenEnv and MCP clients, allowing agents to run evaluations and test scenarios against controlled states.
Seahaven at a glance
- Best for: Software engineer
- Runs on: Python, OpenEnv, CLI, open source
- Pricing: Free
- Released: October 2026
- Category: AI research tool
- Website: github.com/kiln-ai/seahaven
Key features
- Recreate any environment with custom formats
- Maintain state with independent SQLite databases
- Compose and share worlds
- Freeze starting states as fixtures
- Serve concurrent world instances
- Grade agents on state changes
- Host environments with OpenEnv
- Connect to MCP clients
Use it for
- Run agent evaluations and reinforcement learning
- Test coding agents in synthetic environments
- Simulate tools like Stripe and CRM systems
- Grade agent performance using world state changes
Alternatives to Seahaven
- Kiln AI — Provides stateful, resettable, and parallel environments for agent evals.
- OmniAgent — It evolves skills in real-time and dynamically hardens security during task execution.
- Klavis — Provides live environments for training agents with verifiable reward data.
- MyAgent — It features built-in permission controls, long-term memory, and skill self-evolution.
- Rax — Exploration compiles into code that runs up to 241 times faster.
- Beeuni — Agents retain context and improve skills over time through a controlled review process.
- Harness2 — It recursively refines agent execution structures using parallel and sequential search.
- Kungfu — Maintains work state and context when switching between different AI agents.
- PySpur — A development environment for debugging and deploying reliable AI agents.
- Starnet — Visual agent management with transparent, persistent on-disk logs and state.
- NPCTalk — Adds real-time cloned NPC voice servers and AI agent skills for game mods.
- NemoClaw — Provides managed security, networking, and lifecycle operations for AI agents.
All Seahaven alternatives