Fly.io
Fly.io provides real hardware-isolated Linux computers (called Sprites and Machines) for agents, evals, and tools, with a pay-as-you-go model where billing goes to zero when not in use. The platform specializes in running AI agents, coding agents, personal agents, MCP servers, and untrusted code in isolated VMs with persistent storage and automatic checkpointing.
18/38 applicable signals pass. Open the Capabilities tab for the full signal breakdown, or Issues for the highest-impact gaps.
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Frequently asked about Fly.io
How Fly.io compares
Fly.io scores 53 out of 100, 5.2 points below the 58.2 average across the 406 tools we have scored.
Where Fly.io fails alongside almost everyone, which is the industry gap rather than a mark against this product:
- OpenAPI / spec quality, where only 13% of scored tools do this (50 of 392).
- Response examples provided, where only 13% of scored tools do this (51 of 392).
- Errors and status codes documented, where only 13% of scored tools do this (52 of 392).
Population figures are read live from the scored registry. We sell nothing listed here and take no payment for a score. See the full dataset.
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