# Backblaze B2 vs DigitalOcean Spaces

> Backblaze B2 scores 75.3 (BB) to DigitalOcean Spaces's 63.2 (B) for object storage. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/backblaze-b2-vs-digitalocean-spaces
- Markdown: https://www.anchorterminal.com/compare/backblaze-b2-vs-digitalocean-spaces.md (~2,650 tokens)
- Slim: https://www.anchorterminal.com/compare/backblaze-b2-vs-digitalocean-spaces.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/backblaze-b2-vs-digitalocean-spaces.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 DigitalOcean Spaces's 63.2 (B), and leads in 5 of 7 scored categories. DigitalOcean Spaces leads on reliability. Both do object storage.

- Backblaze B2: grade BB, 75.3/100, rank #49 of 950. Markdown https://www.anchorterminal.com/tools/backblaze-b2.md · JSON https://www.anchorterminal.com/api/v1/tools/backblaze-b2.json
- DigitalOcean Spaces: grade B, 63.2/100, rank #402 of 950. Markdown https://www.anchorterminal.com/tools/digitalocean-spaces.md · JSON https://www.anchorterminal.com/api/v1/tools/digitalocean-spaces.json
- Best file storage and sharing APIs for AI agents: https://www.anchorterminal.com/best/file-storage/index.md
- All 75 storage comparisons: https://www.anchorterminal.com/compare/file-storage/index.md

## 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:
- Schema & documentation, 89 against 63
- Agent ergonomics, 85 against 73
- Security & auth, 90 against 77
- Payments & pricing, 40 against 20
- Maintenance & community, 90 against 37

Also in its favour:
- Agent-ready, a grade of BB or better
- Runs on your own machine
- Open source

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

### DigitalOcean Spaces (B)

Good for: Teams already on DigitalOcean that want object storage with a CDN and a flat $5 entry price for up to 250 GiB, with free transfer to Droplets in the same region.

Ahead on:
- Reliability, 77 against 60

Watch for: The Spaces MCP server has ten tools for access keys and CDN endpoints. None reads, writes, lists or shares an object


## Score by category

| Category | Weight | Backblaze B2 | DigitalOcean Spaces | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 77 | DigitalOcean Spaces +17 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 89 | 63 | Backblaze B2 +26 |
| Agent ergonomics | 13% (16.2 this run) | 85 | 73 | Backblaze B2 +12 |
| Security & auth | 14% (17.5 this run) | 90 | 77 | Backblaze B2 +13 |
| 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 | 37 | Backblaze B2 +53 |
| Transparency & trust | 7% (8.8 this run) | 73 | 74 | DigitalOcean Spaces +1 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **75.3 · BB** | **63.2 · B** | |

## Facts side by side

| Fact | Backblaze B2 | DigitalOcean Spaces |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Backblaze | DigitalOcean, LLC |
| Hosted endpoint | `https://s3.us-west-004.backblazeb2.com` | `https://nyc3.digitaloceanspaces.com` |
| Transports | HTTP, stdio, Streamable HTTP | HTTP, Streamable HTTP |
| Auth | API key | API key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | MIT | Proprietary service under the DigitalOcean Terms of Service Agreement. The MCP server is MIT |
| Tools exposed | 40 | none |
| Read-only variant documented | yes | yes |
| llms.txt | no | yes |
| MCP registry | `io.github.backblaze-labs/b2-mcp` | not listed |
| Last release | 2026-09-29 | 2026-04-08 |
| Terms last updated | 2026-04-16 | 2026-08-22 |
| Privacy policy last updated | 2026-04-30 | 2025-01-01 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | yes | yes |
| Popularity | 1 stars, 150 npm/wk, 112k PyPI/wk | none |
| 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.

**DigitalOcean Spaces.** Per-bucket access keys with read or read-write-delete grants, an 800 operations a second limit per bucket and a 99.9 per cent SLA are all published. The MCP server manages keys and CDN endpoints only, not objects, and the S3 reference documents no error codes. A payment method is required before any bucket is created.

## 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

### DigitalOcean Spaces

1. Set the endpoint to `https://<region>.digitaloceanspaces.com` and, in AWS SDKs other than Python's, set `region` to `us-east-1` when creating a bucket
2. Ask for a limited access key with a Read or Read/Write/Delete grant on one bucket. A full access key can create, configure and delete every bucket
3. Do the object work through the S3 API. The MCP server and `doctl` cannot upload, list, move or delete files
4. Retry with exponential backoff on `503 Slow Down`, and keep below 800 operations a second per bucket
5. Fetch presigned links from the origin host, not the CDN. The docs say presigned requests through the CDN are not cached and can double the bandwidth charge
6. Avoid many tiny objects. Each bills as at least 4 KiB on Standard and 128 KiB on Cold Storage, which also has a 30-day minimum

## Questions

### Which is better for AI agents, Backblaze B2 or DigitalOcean Spaces?

Backblaze B2 scores 75.3 (BB) on agent readiness against DigitalOcean Spaces's 63.2 (B), and leads in 5 of 7 scored categories. DigitalOcean Spaces leads on reliability.

### Do Backblaze B2 and DigitalOcean Spaces need an API key?

Both need an API key.

### Can an agent call Backblaze B2 and DigitalOcean Spaces without installing anything?

Yes. Backblaze B2 has a hosted endpoint at https://s3.us-west-004.backblazeb2.com and DigitalOcean Spaces at https://nyc3.digitaloceanspaces.com.

### Are Backblaze B2 and DigitalOcean Spaces open source?

Backblaze B2 is open source (MIT). No open-source release is listed for DigitalOcean Spaces.


## For agents

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

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