Mesa (mesa.dev)

Mesa provides a programmable storage layer and virtual filesystem built for AI agents and developer workflows. It enables versioning with checkpointing or branch-based workflows, and offers APIs to read and write data with durability baked in.

Reads and writes are durable automatically, with version history captured for every change. The architecture supports mounting a filesystem that agents can access as if it were local, while maintaining a centralized Change history and permissions policies. The tool is usable across diverse environments where agents run, including serverless or multi-repo scenarios.

Mesa emphasizes fast, on-demand file materialization and a virtual filesystem that avoids full repo clones. It provides a cache and prefetching to improve latency, and supports large files with random access.

Use cases

• Sandbox & VM agents mount Mesa inside containers for a real working directory with no egress for filesystem reads
• In-process backend agents use the just-bash SDK for isolated multi-tenant filesystems
• Dev environments and IDEs can read instantly across hundreds of repos