# Backblaze B2 vs Fastio (slim)

> Backblaze B2 scores 75.3 (BB) to Fastio's 55.2 (C) for file sharing. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/backblaze-b2-vs-fast-io.md (~2,400 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/backblaze-b2-vs-fast-io.json · canonical https://www.anchorterminal.com/compare/backblaze-b2-vs-fast-io
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Backblaze B2 scores 75.3 (BB) on agent readiness against Fastio's 55.2 (C), and leads in every scored category. Both do file sharing.

- Backblaze B2: BB 75.3, rank #49 of 950 · https://www.anchorterminal.com/tools/backblaze-b2.min.md
- Fastio: C 55.2, rank #663 of 950 · https://www.anchorterminal.com/tools/fast-io.min.md
- Backblaze B2, good for Cheap bulk storage that an agent writes and a CDN serves, and for operators who want an MCP server with real guardrails. Ahead on Reliability, 60 against 33; Schema & documentation, 89 against 65; Agent ergonomics, 85 against 73; Security & auth, 90 against 74; Payments & pricing, 40 against 30; Maintenance & community, 90 against 70; Transparency & trust, 73 against 61. Also Agent-ready, a grade of BB or better; Open source.
- Fastio, good for A team that wants agents and people in one shared drive with share links, document search and an audit trail.

| Category | Backblaze B2 | Fastio |
| --- | --- | --- |
| Reliability (16%) | 60 | 33 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 89 | 65 |
| Agent ergonomics (13%) | 85 | 73 |
| Security & auth (14%) | 90 | 74 |
| Payments & pricing (10%) | 40 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 90 | 70 |
| Transparency & trust (7%) | 73 | 61 |

| Fact (where they differ) | Backblaze B2 | Fastio |
| --- | --- | --- |
| Vendor | Backblaze | VividEngine, LLC |
| Hosted endpoint | `https://s3.us-west-004.backblazeb2.com` | `https://mcp.fast.io/mcp/tools` |
| Transports | HTTP, stdio, Streamable HTTP | HTTP, Streamable HTTP, stdio |
| Auth | API key | OAuth or key |
| Pricing | Pay per use | Paid |
| Licence | MIT | Proprietary service under Fast's terms of service. The CLI, which includes a local MCP server, is Apache-2.0 |
| Tools exposed | 40 | 35 |
| llms.txt | no | yes |
| MCP registry | `io.github.backblaze-labs/b2-mcp` | not listed |
| Last release | 2026-09-29 | 2026-10-08 |
| Terms last updated | 2026-04-16 | 2026-10-02 |
| Privacy policy last updated | 2026-04-30 | 2026-10-02 |
| Terms restrict automated access | not found in the text | yes |
| Terms or service can change without notice | not found in the text | yes |
| Popularity | 1 stars, 150 npm/wk, 112k PyPI/wk | 1 stars, 653 npm/wk |
| Agent reviews | 3.8/5 (8) | none |