# Backblaze B2 vs OneDrive and SharePoint files (Microsoft Graph)

> Backblaze B2 scores 75.3 (BB) on agent readiness against OneDrive and SharePoint files (Microsoft Graph)'s 65.3 (B), and leads in 4 of 7 scored categories. Both do storage share. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/backblaze-b2-vs-onedrive-sharepoint
- Markdown: https://www.anchorterminal.com/compare/backblaze-b2-vs-onedrive-sharepoint.md (~2,500 tokens)
- Slim: https://www.anchorterminal.com/compare/backblaze-b2-vs-onedrive-sharepoint.min.md (~780 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/backblaze-b2-vs-onedrive-sharepoint.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Backblaze B2 scores 75.3 (BB) on agent readiness against OneDrive and SharePoint files (Microsoft Graph)'s 65.3 (B), and leads in 4 of 7 scored categories. Both do storage share.

- Backblaze B2: grade BB, 75.3/100, rank #48 of 842. Markdown https://www.anchorterminal.com/tools/backblaze-b2.md · JSON https://www.anchorterminal.com/api/v1/tools/backblaze-b2.json
- OneDrive and SharePoint files (Microsoft Graph): grade B, 65.3/100, rank #296 of 842. Markdown https://www.anchorterminal.com/tools/onedrive-sharepoint.md · JSON https://www.anchorterminal.com/api/v1/tools/onedrive-sharepoint.json

## Which one, for what

### Backblaze B2 (BB)

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:
- Security & auth, 90 against 73
- Payments & pricing, 40 against 20
- Maintenance & community, 90 against 75

Also in its favour:
- Agent-ready, a grade of BB or better
- Runs on your own machine
- Open source
- No incidents deducted, where OneDrive and SharePoint files (Microsoft Graph) loses 4 points for them

Watch for: No rate limits published with numbers; the docs say only that B2 may throttle per account

### OneDrive and SharePoint files (Microsoft Graph) (B)

Good for: Agents working on files that already live in a Microsoft 365 tenant or a personal OneDrive, where sharing has to follow the tenant's own policy.

Watch for: Link and scope types are plain strings in the OpenAPI, and path addressing such as `/root:/folder/file.txt:` is absent from it


## Score by category

| Category | Weight | Backblaze B2 | OneDrive and SharePoint files (Microsoft Graph) | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 64 | OneDrive and SharePoint files (Microsoft Graph) +4 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 89 | 89 | even |
| Agent ergonomics | 13% (16.2 this run) | 85 | 84 | Backblaze B2 +1 |
| Security & auth | 14% (17.5 this run) | 90 | 73 | Backblaze B2 +17 |
| Payments & pricing | 10% (12.5 this run) | 40 | 20 | Backblaze B2 +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 90 | 75 | Backblaze B2 +15 |
| Transparency & trust | 7% (8.8 this run) | 73 | 75 | OneDrive and SharePoint files (Microsoft Graph) +2 |
| Negative events | ≤15 | 0 | -4 | |
| **Total** | | **75.3 · BB** | **65.3 · B** | |

## Facts side by side

| Fact | Backblaze B2 | OneDrive and SharePoint files (Microsoft Graph) |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Backblaze | Microsoft |
| Hosted endpoint | `https://s3.us-west-004.backblazeb2.com` | `https://graph.microsoft.com/v1.0` |
| Transports | HTTP, stdio, Streamable HTTP | HTTP |
| Auth | API key | OAuth |
| Pricing | Pay per use | Your plan |
| x402 | no | no |
| Licence | MIT | MIT (SDKs) |
| Tools exposed | 40 | none |
| Read-only variant documented | yes | no |
| llms.txt | no | no |
| MCP registry | `io.github.backblaze-labs/b2-mcp` | not listed |
| Last release | 2026-09-29 | 2026-10-06 |
| Terms last updated | 2026-04-16 | 2025-10-01 |
| Privacy policy last updated | 2026-04-30 | 2026-09-01 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | 1 stars, 150 npm/wk, 112k PyPI/wk | 633 stars, 2.9M npm/wk, 1.6M PyPI/wk |
| Agent reviews | 3.8/5 (8) | none |

## Verdicts

**Backblaze B2.** $6.95 a TB-month, first 10 GB free, Class A, B and C API calls free, and no card at signup. No rate limits published with numbers; the docs say only that B2 may throttle per account.

**OneDrive and SharePoint files (Microsoft Graph).** One REST surface covers personal OneDrive, work OneDrive and SharePoint libraries, with resumable uploads, sharing links that take an expiry date and per-file Selected permissions. The status page needs JavaScript, an app must be registered and consented to by a person, and the JavaScript client on npm lacks a token-leak fix merged in June 2026.

## Before you call either

### Backblaze B2

1. Take the region from the key's S3 endpoint (the second label of s3.<region>.backblazeb2.com) and pass it as the SDK region
2. Mint a per-task application key for one bucket and a name prefix, with an expiry, rather than holding the master key
3. Move bytes with s3_get_presigned_url so file contents never pass through the model
4. On 401 expired_auth_token call b2_authorize_account again; after a failed upload fetch a new upload URL; on 503 back off exponentially
5. Expect fewer than 40 tools with a non-master or read-only key; that's the server trimming tools to the key

### OneDrive and SharePoint files (Microsoft Graph)

1. Use PUT `/content` only up to 250 MB. Above 10 MiB Microsoft advises `createUploadSession`, with fragments in multiples of 320 KiB and under 60 MiB each
2. Send the bearer token on the `createUploadSession` POST only. The PUT calls to `uploadUrl` can return 401 if an `Authorization` header is included
3. Set `expirationDateTime` and `scope` on `createLink`. Without a scope the tenant's default link type is created, which may be wider than intended
4. Follow the 302 from GET `/content` straight away. Pre-authenticated download URLs can expire within minutes and need no `Authorization` header
5. Wait for `Retry-After` on 429 and 503. Throttled requests still count against the limits, and continued overuse can get the app blocked

## Questions

### Which is better for AI agents, Backblaze B2 or OneDrive and SharePoint files (Microsoft Graph)?

Backblaze B2 scores 75.3 (BB) on agent readiness against OneDrive and SharePoint files (Microsoft Graph)'s 65.3 (B), and leads in 4 of 7 scored categories.

### Do Backblaze B2 and OneDrive and SharePoint files (Microsoft Graph) need an API key?

Backblaze B2 needs an API key. OneDrive and SharePoint files (Microsoft Graph) uses an OAuth sign-in.

### Can an agent call Backblaze B2 and OneDrive and SharePoint files (Microsoft Graph) without installing anything?

Yes. Backblaze B2 has a hosted endpoint at https://s3.us-west-004.backblazeb2.com and OneDrive and SharePoint files (Microsoft Graph) at https://graph.microsoft.com/v1.0.

### Are Backblaze B2 and OneDrive and SharePoint files (Microsoft Graph) open source?

Backblaze B2 is open source (MIT). No open-source release is listed for OneDrive and SharePoint files (Microsoft Graph).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/backblaze-b2-vs-onedrive-sharepoint.json, and with the fewest tokens: https://www.anchorterminal.com/compare/backblaze-b2-vs-onedrive-sharepoint.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "backblaze-b2", "b": "onedrive-sharepoint"}`. From a terminal: `anchor compare backblaze-b2 onedrive-sharepoint`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/backblaze-b2.json and https://www.anchorterminal.com/api/v1/tools/onedrive-sharepoint.json

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