Mesa.dev
Verified Oct 15, 2026 ActiveA versioned filesystem built for AI coding agents, adding Git-style branching, checkpoints, and rollback to agent file storage.
Listed on EffectHub ·
Pricing
- Pricing model
- Freemium
Free tier on every account: 50 GB storage, 1,000 repositories and 200 GB monthly egress. Beyond that, usage-based at $0.20 per GB-month of storage and $0.11 per GB of Git or REST egress, invoiced monthly with no minimum; reads through the virtual filesystem are not metered. Enterprise pricing is custom.
Use tool ↗About Mesa.dev
Mesa is a storage layer purpose-built for AI agents rather than humans, combining a familiar filesystem interface with Git-style version control: branching, checkpoints, and rollback, plus concurrent access without the file locks that trip up parallel agent workflows. It targets developers building coding agents, personal assistants, and data or document-handling agents that need reliable, recoverable state as they work. Mesa Systems, Inc. is based in the San Francisco Bay Area and built by engineers with backgrounds at companies including Microsoft, AWS, Google, and Tesla. The product is in private beta. A free tier covers 50 GB of storage and 1,000 repositories; beyond that, Scale pricing is pay-as-you-go at $0.20 per GB per month of storage plus $0.11 per GB of egress.
- Platforms
- Web · API
- API
- Yes
- Last verified
- Oct 15, 2026
Verified sources
- Pricing page (15 October 2026): free tier 50 GB storage, 1,000 repositories, 200 GB/mo egress; storage $0.20/GB/mo, egress $0.11/GB; virtual filesystem reads exempt from egress; no minimums; enterprise custommesa.dev ↗
- Home page (15 October 2026): versioned filesystem for AI agents with an npm SDK, in-process mounts, human-in-the-loop review gates; sign-up is still 'Get early access'mesa.dev ↗
- Pricing page footer (15 October 2026): 'Copyright 2026. Mesa Systems, Inc.' with San Francisco coordinatesmesa.dev ↗
Is Mesa.dev legit?
We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.
- Domain registered
- Sep 29, 2024 (2 years ago)Registry record (RDAP), registrar Namecheap Inc., looked up Sep 6, 2026
- TLS certificate
- Issued by Amazon, valid until Mar 5, 2027Seen in our own connection to the site on Oct 15, 2026
- Last checked
- Oct 15, 2026The site answered
- Operated by
- Mesa Systems, Inc., United StatesOur research, card verified Oct 15, 2026
Pros & cons of Mesa.dev
Mesa's bet is that as coding agents do more unsupervised work, the storage layer underneath them needs Git-like recoverability rather than a plain filesystem, so a bad agent action can be rolled back instead of corrupting a project. The pay-as-you-go pricing beyond the free tier makes cost hard to predict until you know your actual storage and egress volume, and it's still in private beta.
Pros
- Git-style branching, checkpoints, and rollback purpose-built for agent workflows
- Concurrent access without traditional file locks, useful for parallel agent swarms
- Generous free tier — 50 GB and 1,000 repositories — for initial testing
- Engineering team has backgrounds at major infrastructure companies
Cons
- Still in private beta, so reliability at scale is unproven outside early design partners
- Pay-as-you-go pricing beyond the free tier makes total cost hard to estimate in advance
- Only useful if your agent workflow actually needs versioned storage rather than a plain disk
Best for
- Developers building coding agents or agent swarms that need checkpoint-and-rollback safety
- Teams running concurrent agents that would otherwise collide on file locks
Not for
- Projects that don't need version history or rollback on agent-written files
- Teams wanting a fixed monthly price rather than usage-based storage and egress billing